Dead-for-me "Public" DNS Servers... Dead-for-you???

Gang,

From the list of available public DNS servers, these are either 
unresponsive or actively rejecting queries from my location:


  4.  2.  2.  4
 65. 74.140.  3
 66. 90. 68. 15
 66. 90. 68. 16
 66. 90. 68. 25
 66. 90. 68. 26
 67.138. 54.100
151.197.  0. 38
151.197.  0. 39
151.202.  0. 84
151.202.  0. 85
151.203.  0. 84
151.203.  0. 85
192. 76. 85.133
199. 45. 32. 37
199. 45. 32. 38
199. 45. 32. 40
199. 45. 32. 43
199.166. 31.  3
206.111.255.123
207.225.209. 66
220.233.167. 31


I would LOVE to get some confirmation that it's not just me (my 
location, carrier, etc.), but that these are GENERALLY publicly 
unavailable for everyone ... so that I can exclude them from the 
DNS Benchmark's suggestion and public server testing/benchmark 
list.

To test whether a specific nameserver is responsive from your 
location, fire up a MS-DOS Prompt (DOS Box) and give the command 
'nslookup' (w/o the quotes). You should get a simple '>' prompt.

> 

To first see what a SUCCESSFUL DNS lookup looks like, just enter 
a domain name, like 'grc.com' and press enter.  After a short 
pause you should see some lines and finally one showing the IP 
address of grc.com, which is currently  '4.79.142.200'.  Thus 
the lookup worked correctly using the default nameservers for 
your system.

Now we want to see whether the same lookup functions when you 
specify the specific nameserver for nslookup to query ... from 
the list of those above.

To set a server to test, use the "server" command, like this:

> server 4.2.2.4

nslookup will switch to using that as the default server for 
subsequent lookup queries.  Next, simply give it a domain name 
to lookup, like 'grc.com', simply by entering the domain name 
and hitting Enter:

> grc.com

If the lookup succeeds, you'll get grc.com's address, otherwise 
you'll receive a timeout, refused, or other error.

---

So my question is ... do **ANY** of those nameserver listed 
above work for **ANYONE** ???

Thanks a million!!!

-- 
________________________________________________________________
Steve.  Working on: GRC's DNS nameserver spoofability testing.
        https://www.grc.com/dns/dns.htm
0
Steve
2/21/2009 7:48:58 PM
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Correction...

I *AM* getting DNS replies from  199.166.31.3  (ns1.quasar.net)

But not from *any* others.  :)

Thanks!

-- 
________________________________________________________________
Steve.  Working on: GRC's DNS nameserver spoofability testing.
        https://www.grc.com/dns/dns.htm
0
Steve
2/21/2009 7:59:29 PM
Steve Gibson wrote:
> Gang,
> 
> From the list of available public DNS servers, these are either 
> unresponsive or actively rejecting queries from my location:
> 
> 
>   4.  2.  2.  4
>  65. 74.140.  3
>  66. 90. 68. 15

The first one (4.2.2.4) works for me.  The next ones (above) don't. 
Will keep going through the list, but I thought the success on the one 
might be something you'd want to know asap.

-- 
Bob Trevithick
Registered Linux User #426103
0
Bob
2/21/2009 8:03:58 PM
Lookups performed from Cox cable. Apologies for the verbosity.


-------- Using server 4.2.2.4 --------
Server:  vnsc-pri-dsl.genuity.net
Address:  4.2.2.4

Non-authoritative answer:
Name:    grc.com
Address:  4.79.142.200

-------- Using server 65.74.140.3 --------
*** Can't find server name for address 65.74.140.3: No response from server
Server:  UnKnown
Address:  65.74.140.3

*** UnKnown can't find grc.com: No response from server

-------- Using server 66.90.68.15 --------
*** Can't find server name for address 66.90.68.15: Query refused
Server:  UnKnown
Address:  66.90.68.15

*** UnKnown can't find grc.com: Query refused

-------- Using server 66.90.68.16 --------
*** Can't find server name for address 66.90.68.16: Query refused
Server:  UnKnown
Address:  66.90.68.16

DNS request timed out.
     timeout was 2 seconds.
*** Request to UnKnown timed-out

-------- Using server 66.90.68.25 --------
*** Can't find server name for address 66.90.68.25: Query refused
Server:  UnKnown
Address:  66.90.68.25

*** UnKnown can't find grc.com: Query refused

-------- Using server 66.90.68.26 --------
DNS request timed out.
     timeout was 2 seconds.
*** Can't find server name for address 66.90.68.26: Timed out
Server:  UnKnown
Address:  66.90.68.26

DNS request timed out.
     timeout was 2 seconds.
*** Request to UnKnown timed-out

-------- Using server 67.138.54.100 --------
DNS request timed out.
     timeout was 2 seconds.
*** Can't find server name for address 67.138.54.100: Timed out
Server:  UnKnown
Address:  67.138.54.100

DNS request timed out.
     timeout was 2 seconds.
DNS request timed out.
     timeout was 2 seconds.
*** Request to UnKnown timed-out

-------- Using server 151.197.0.38 --------
Server:  nsphil.bellatlantic.net
Address:  151.197.0.38

Non-authoritative answer:
Name:    grc.com
Address:  4.79.142.200

-------- Using server 151.197.0.39 --------
Server:  home4.bellatlantic.net
Address:  151.197.0.39

Non-authoritative answer:
Name:    grc.com
Address:  4.79.142.200

-------- Using server 151.202.0.84 --------
Server:  nyc1-qwest.bellatlantic.net
Address:  151.202.0.84

Non-authoritative answer:
Name:    grc.com
Address:  4.79.142.200

-------- Using server 151.202.0.85 --------
Server:  nyc2-qwest.bellatlantic.net
Address:  151.202.0.85

Non-authoritative answer:
Name:    grc.com
Address:  4.79.142.200

-------- Using server 151.203.0.84 --------
Server:  boston1-qwest.bellatlantic.net
Address:  151.203.0.84

Non-authoritative answer:
Name:    grc.com
Address:  4.79.142.200

-------- Using server 151.203.0.85 --------
Server:  boston2-qwest.bellatlantic.net
Address:  151.203.0.85

Non-authoritative answer:
Name:    grc.com
Address:  4.79.142.200

-------- Using server 192.76.85.133 --------
Server:  vzdns01.verizon.com
Address:  192.76.85.133

Name:    grc.com
Served by:
- A.ROOT-SERVERS.NET
           198.41.0.4

- G.ROOT-SERVERS.NET
           192.112.36.4

- M.ROOT-SERVERS.NET


- E.ROOT-SERVERS.NET
           192.203.230.10

- J.ROOT-SERVERS.NET
           192.58.128.30

- L.ROOT-SERVERS.NET


- C.ROOT-SERVERS.NET
           192.33.4.12

- H.ROOT-SERVERS.NET
           128.63.2.53

- D.ROOT-SERVERS.NET
           128.8.10.90

- B.ROOT-SERVERS.NET
           192.228.79.201



-------- Using server 199.45.32.37 --------
Server:  world1.bellatlantic.net
Address:  199.45.32.37

Non-authoritative answer:
Name:    grc.com
Address:  4.79.142.200

-------- Using server 199.45.32.38 --------
Server:  nsdc.bellatlantic.net
Address:  199.45.32.38

Non-authoritative answer:
Name:    grc.com
Address:  4.79.142.200

-------- Using server 199.45.32.40 --------
Server:  legacy-ns1.bellatlantic.net
Address:  199.45.32.40

Non-authoritative answer:
Name:    grc.com
Address:  4.79.142.200

-------- Using server 199.45.32.43 --------
Server:  home1.bellatlantic.net
Address:  199.45.32.43

Non-authoritative answer:
Name:    grc.com
Address:  4.79.142.200

-------- Using server 199.166.31.3 --------
*** Can't find server name for address 199.166.31.3: Server failed
Server:  UnKnown
Address:  199.166.31.3

Non-authoritative answer:
Name:    grc.com
Address:  4.79.142.200

-------- Using server 206.111.255.123 --------
DNS request timed out.
     timeout was 2 seconds.
*** Can't find server name for address 206.111.255.123: Timed out
Server:  UnKnown
Address:  206.111.255.123

DNS request timed out.
     timeout was 2 seconds.
DNS request timed out.
     timeout was 2 seconds.
*** Request to UnKnown timed-out

-------- Using server 207.225.209.66 --------
DNS request timed out.
     timeout was 2 seconds.
*** Can't find server name for address 207.225.209.66: Timed out
Server:  UnKnown
Address:  207.225.209.66

DNS request timed out.
     timeout was 2 seconds.
DNS request timed out.
     timeout was 2 seconds.
*** Request to UnKnown timed-out

-------- Using server 220.233.167.31 --------
DNS request timed out.
     timeout was 2 seconds.
*** Can't find server name for address 220.233.167.31: Timed out
Server:  UnKnown
Address:  220.233.167.31

DNS request timed out.
     timeout was 2 seconds.
DNS request timed out.
     timeout was 2 seconds.
*** Request to UnKnown timed-out

-- 
Robin
0
Robin
2/21/2009 8:13:23 PM
All dead (mostly DNS time outs?) except:


4.2.2.4 gives:

Non-authoritative answer:
Name:   grc.com
Address 4.79.142.200

and

192.76.85.133 gives:

Name:    grc.com
Server:  vzdns01.verizon.com
Address:  192.76.85.133

Name:   grc.com
Served by:
- A.ROOT-SERVERS.NET
            198.40.0.4
- G.ROOT-SERVERS.NET
            192.112.36.4
etc with values for A G M E J L C H D  and B Root Servers

Hope this helps Steve 


0
Galadrial
2/21/2009 8:15:16 PM
Picked up your request in grc.news, but I don't subscribe to grc.dns...

By coincidence, I dumped my ISP'd DNS servers (too slow) earlier this 
week and used 4.2.2.4, 4.2.2.5. They have handeld my DNS needs 
impeccably since.

I thought I'd run a tracert for you to 4.2.2.4 to see where that DNS 
server is located from my point of view.

> C:\WINDOWS>tracert 4.2.2.4
> 
> Tracing route to vnsc-pri-dsl.genuity.net [4.2.2.4]
> over a maximum of 30 hops:
> 
>   1     3 ms    <1 ms     3 ms  192.168.1.254
>   2    47 ms    46 ms    48 ms  64.230.197.121
>   3    46 ms    45 ms    50 ms  dis15-ottawa23_Vlan110.net.bell.ca [64.230.228.22]
>   4    45 ms    44 ms    47 ms  core2-ottawa23_GE11-1.net.bell.ca [64.230.241.221]
>   5    50 ms    46 ms    49 ms  Ncore3-montreal02_POS0-4-0-0.net.bell.ca [64.230.147.133]
>   6    51 ms    49 ms    48 ms  bx4-montreal02_so-0-0-0.net.bell.ca [64.230.170.174]
>   7    50 ms    48 ms    49 ms  peer_Level3_bx4-montreal02.net.bell.ca [67.69.246.126]
>   8    69 ms    54 ms    57 ms  ae-5-5.ebr4.NewYork1.Level3.net [4.69.141.6]
>   9    60 ms    56 ms    68 ms  ae-74-74.csw2.NewYork1.Level3.net [4.69.134.118]
>  10    56 ms    57 ms    56 ms  ge-5-0.core1.NewYork1.Level3.net [4.68.97.40]
>  11    60 ms    56 ms    56 ms  vnsc-pri-dsl.genuity.net [4.2.2.4]
> 
> Trace complete.
> 
> C:\WINDOWS>

Looks like NYC from here...

Hope that helps..

-- 
Le Flake
  from deepest, darkest Ontario...
0
Le
2/21/2009 8:19:19 PM
Hi Steve.

> So my question is ... do **ANY** of those nameserver listed 
> above work for **ANYONE** ???

Not from here in Oslo, Norway.

(Unexpectedly nslookup works the same on Linux.)

Nils
0
Nils
2/21/2009 8:21:28 PM
Okay Steve, here are the ones that DO work for me:

4.2.2.4
151.197.0.39
151.202.0.84
151.202.0.85
151.203.0.84
151.203.0.85
192.76.85.133
199.45.32.37
199.45.32.38
199.45.32.40
199.45.32.43

-- 
Bob Trevithick
Registered Linux User #426103
0
Bob
2/21/2009 8:21:55 PM
In grc.dns, on Sat, 21 Feb 2009 11:48:58, Steve Gibson wrote:

>I would LOVE to get some confirmation that it's not just me (my 
>location, carrier, etc.), but that these are GENERALLY publicly 
>unavailable for everyone

The following eleven work fine:

   4.  2.  2.  4
157.197.  0. 38
157.197.  0. 39
151.202.  0. 84
151.202.  0. 85
151.203.  0. 84
151.202.  0. 85
199. 45. 32. 37 returns the list of root servers immediately when being 
made the default server, and then finds grc.com just fine.
199. 45. 32. 38
199. 45. 32. 40
199. 45. 32. 43

These ten all time out:

  65. 74.140.  3
  66. 90. 68. 15
  66. 90. 68. 16
  66. 90. 68. 25
  66. 90. 68. 26
192. 76. 85.133 only returns the list of root servers when given grc.com 
as a query.
199.166. 31.  3
206.111.255.123
207.225.209. 66
220.233.167. 31

-- 
Jim Crowther
0
Jim
2/21/2009 8:22:04 PM
On Sat, 21 Feb 2009 11:48:58 -0800
Steve Gibson <news07_@_grc.com> wrote:

> Gang,
> 
> From the list of available public DNS servers, these are either 
> unresponsive or actively rejecting queries from my location:

OK, so far I have:


>   4.  2.  2.  4     WORKS FOR ME
>  65. 74.140.  3     no response from server
>  66. 90. 68. 15     query refused
>  66. 90. 68. 16     query refused
>  66. 90. 68. 25     query refused
>  66. 90. 68. 26     query refused
>  67.138. 54.100     timeout


0
John
2/21/2009 9:19:30 PM
----7A2B122C119E8EE1_message_boundary--
Content-type: text/plain; charset="utf-8"
Content-Transfer-Encoding: 8bit

On Sat, 21 Feb 2009 11:48:58 -0800, Steve Gibson wrote:

> So my question is ... do **ANY** of those nameserver listed 
> above work for **ANYONE** ???

There are some details in attached resolv.dns.grc.zip
The command used for the file was:
for a in `list`; do dig @$a google.com; done > resolv.dns.grc

The main question answered:

DO work
4.  2.  2.  4				yes
151.197.  0. 38			yes
151.197.  0. 39			yes
151.202.  0. 84			yes
151.202.  0. 85			yes
151.203.  0. 84			yes
151.203.  0. 85			yes
199. 45. 32. 37			yes
199. 45. 32. 38			yes
199. 45. 32. 40			yes
199. 45. 32. 43			yes
199.166. 31.  3			yes

do NOT work:
65. 74.140.  3			NO
67.138. 54.100			NO
206.111.255.123			NO
207.225.209. 66			NO
220.233.167. 31			NO

work but NOT resolve
66. 90. 68. 15			no recursion
66. 90. 68. 16			no recursion
66. 90. 68. 25			no recursion
66. 90. 68. 26			no recursion
192. 76. 85.133			no recursion

> Thanks a million!!!
YVW

-- 
Mark Cross @ 21/02/2009 05:08:55 p.m.
Never take life seriously. Nobody gets out alive anyway.
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----7A2B122C119E8EE1_message_boundary----

0
Mark
2/21/2009 9:57:41 PM
On Sat, 21 Feb 2009 15:03:58 -0500, Bob Trevithick wrote:


> Will keep going through the list...

Bob, it would be quicker if you do:
make a file dns.server with the numbers from Steve post (without spaces), then execute:
a=`cat dns.server`; for b in $a; do dig @$b grc.com; done > resolv.dns.grc

It would take some time to contact all servers and receive answer, then you could just attach the file to a post.
You could "zip" it if you want also. I am sure Steve could parse the result.

If dig is not available in your system just use:
a=`cat dns.server`; for b in $a; do nslookup grc.com $b; done > resolv.dns.grc

-- 
Mark Cross @ 21/02/2009 06:06:22 p.m.
Never take life seriously. Nobody gets out alive anyway.
0
Mark
2/21/2009 10:22:22 PM
Mark Cross wrote:

> Bob, it would be quicker if you do:
> make a file dns.server with the numbers from Steve post (without spaces), then execute:
> a=`cat dns.server`; for b in $a; do dig @$b grc.com; done > resolv.dns.grc

Thanks Mark, I'll play with that a bit.  Sure looks easier than the way 
I did it. :)

-- 
Bob Trevithick
Registered Linux User #426103
0
Bob
2/21/2009 10:34:13 PM
> From the list of available public DNS servers, these are either 
> unresponsive or actively rejecting queries from my location:

maybe you "bashed" them too much so they blackholed your IP ;-) ?

0
ObiWan
2/21/2009 11:02:26 PM
The following servers responded but server 192.76.85.133 had a weird 
response (see below).

151.197.0.38
151.197.0.39
151.202.0.84
151.202.0.85
151.203.0.84
151.203.0.85
199.45.32.37
199.45.32.38
199.45.32.40
199.45.32.43

########################

> server 192.76.85.133
Default Server:  vzdns01.verizon.com
Address:  192.76.85.133

> grc.com
Server:  vzdns01.verizon.com
Address:  192.76.85.133

Name:    grc.com
Served by:
- A.ROOT-SERVERS.NET
          198.41.0.4

- G.ROOT-SERVERS.NET
          192.112.36.4

- M.ROOT-SERVERS.NET


- E.ROOT-SERVERS.NET
          192.203.230.10

- J.ROOT-SERVERS.NET
          192.58.128.30

- L.ROOT-SERVERS.NET


- C.ROOT-SERVERS.NET
          192.33.4.12

- H.ROOT-SERVERS.NET
          128.63.2.53

- D.ROOT-SERVERS.NET
          128.8.10.90

- B.ROOT-SERVERS.NET
          192.228.79.201 


0
Mike
2/21/2009 11:59:27 PM
Server:		4.2.2.4
Address:	4.2.2.4#53

Non-authoritative answer:
Name:	grc.com
Address: 4.79.142.200

;; connection timed out; no servers could be reached

Server:		66.90.68.15
Address:	66.90.68.15#53

** server can't find grc.com: REFUSED

Server:		66.90.68.16
Address:	66.90.68.16#53

** server can't find grc.com: REFUSED

Server:		66.90.68.25
Address:	66.90.68.25#53

** server can't find grc.com: REFUSED

Server:		66.90.68.26
Address:	66.90.68.26#53

** server can't find grc.com: REFUSED

;; connection timed out; no servers could be reached

;; connection timed out; no servers could be reached

;; connection timed out; no servers could be reached

;; connection timed out; no servers could be reached

;; connection timed out; no servers could be reached

;; connection timed out; no servers could be reached

;; connection timed out; no servers could be reached

Server:		192.76.85.133
Address:	192.76.85.133#53

Non-authoritative answer:
*** Can't find grc.com: No answer

;; connection timed out; no servers could be reached

;; connection timed out; no servers could be reached

;; connection timed out; no servers could be reached

;; connection timed out; no servers could be reached

Server:		199.166.31.3
Address:	199.166.31.3#53

Non-authoritative answer:
Name:	grc.com
Address: 4.79.142.200

;; connection timed out; no servers could be reached

;; connection timed out; no servers could be reached

;; connection timed out; no servers could be reached
0
Dale
2/22/2009 12:20:30 AM
> So my question is ... do **ANY** of those nameserver listed 
> above work for **ANYONE** ???

Hi, Steve. Thanks for giving me an excuse to see if BIND's nameserver
tools are available for Windows. They are! So I used "host" to get these
results, instead of the ancient and annoying nslookup.

RESULTS
================================
Returned Correct IP:
	4.2.2.4
	199.166.31.3

Query Refused:
	66.90.68.15
	66.90.68.16
	66.90.68.25
	66.90.68.26

Timed Out (10 seconds):
	65.74.140.3
	67.138.54.100
	151.197.0.38
	151.197.0.39
	151.202.0.84
	151.202.0.85
	151.203.0.84
	151.203.0.85
	199.45.32.37
	199.45.32.38
	199.45.32.40
	199.45.32.43
	206.111.255.123
	207.225.209.66
	220.233.167.31

"grc.com has no A record":
	192.76.85.133
================================

That last one is interesting! I wonder what you do with a nameserver
that doesn't have any A records.


-- 
erbe

0
erbe
2/22/2009 12:25:02 AM
Hi, Steve


Well, I've never done this before, but if I followed your instructions 
correctly, these servers seemed to work:

4.2.2.4
151.197.0.38
151.197.0.39
151.202.0.84
151.202.0.85
151.203.0.84
151.203.0.85
199.45.32.37
199.45.32.38
199.45.32.40
199.45.32.43

BTW, you're welcome a million. :)


oat s


0
oat
2/22/2009 1:16:53 AM
Steve,

> So my question is ... do **ANY** of those nameserver listed 
> above work for **ANYONE** ???

Microsoft Windows [Version 6.0.6001]
Copyright (c) 2006 Microsoft Corporation.  All rights reserved.

C:\Windows\system32>nslookup
Default Server:  chic-cns.area4.il.chicago.comcast.net
Address:  68.87.72.130

> grc.com
Server:  chic-cns.area4.il.chicago.comcast.net
Address:  68.87.72.130

Non-authoritative answer:
Name:    grc.com
Address:  4.79.142.200

> server 4.2.2.4
Default Server:  vnsc-pri-dsl.genuity.net
Address:  4.2.2.4

> grc.com
Server:  vnsc-pri-dsl.genuity.net
Address:  4.2.2.4

Non-authoritative answer:
Name:    grc.com
Address:  4.79.142.200

> server 65. 74.140.  3
Unrecognized command: server 65. 74.140.  3
> grc.com
Server:  vnsc-pri-dsl.genuity.net
Address:  4.2.2.4

Non-authoritative answer:
Name:    grc.com
Address:  4.79.142.200

> server
Server:  vnsc-pri-dsl.genuity.net
Address:  4.2.2.4

*** vnsc-pri-dsl.genuity.net can't find server: Non-existent domain
> server 66. 90. 68. 16
Unrecognized command: server 66. 90. 68. 16
>
> server 66. 90. 68. 25
Unrecognized command: server 66. 90. 68. 25
>
> server 66. 90. 68. 26
Unrecognized command: server 66. 90. 68. 26
>
> server 67.138. 54.100
Unrecognized command: server 67.138. 54.100
>
> server 151.197.  0. 38
Unrecognized command: server 151.197.  0. 38
>
> server 151.197.  0. 39
Unrecognized command: server 151.197.  0. 39
>
> server 151.202.  0. 84
Unrecognized command: server 151.202.  0. 84
>
> server 151.202.  0. 85
Unrecognized command: server 151.202.  0. 85
>
> server 151.203.  0. 84
Unrecognized command: server 151.203.  0. 84
>
> server 151.203.  0. 85
Unrecognized command: server 151.203.  0. 85
>
> server 192. 76. 85.133
Unrecognized command: server 192. 76. 85.133
>
> server 199. 45. 32. 37
Unrecognized command: server 199. 45. 32. 37
>
> server 199. 45. 32. 38
Unrecognized command: server 199. 45. 32. 38
>
> server 199. 45. 32. 40
Unrecognized command: server 199. 45. 32. 40
>
> server 199. 45. 32. 43
Unrecognized command: server 199. 45. 32. 43
>
> server 199.166. 31.  3
Unrecognized command: server 199.166. 31.  3
>
> server 206.111.255.123
Default Server:  206.111.255.123.ptr.us.xo.net
Address:  206.111.255.123

>
> server 207.225.209. 66
Unrecognized command: server 207.225.209. 66
>
> server 220.233.167. 31
Unrecognized command: server 220.233.167. 31
>
>
-- 

     Jim Lilly 
     Using - Virtual Access(OLR)
     http://www.virtual-access.org
     6.3 build 1 Windows Vista Service Pack 1 build 6001

0
A1PCfixer
2/22/2009 1:46:30 AM
A1PCfixer wrote:

>> server 220.233.167. 31
> Unrecognized command: server 220.233.167. 31

Jim, I think those spaces are tripping you up.  The error message you're 
getting isn't saying anything about the server--it's saying that the 
program you're running doesn't understand what you just asked it to do.  :)

-- 
Bob Trevithick
Registered Linux User #426103
0
Bob
2/22/2009 1:57:20 AM
In the order you posted from ISP Comcast...

4.2.2.4 OK
   65.74.140.3 NO
   66.90.68.15 NO
   66.90.68.16 NO
   66.90.68.25 NO
   66.90.68.26 NO
   67.138.54.100 NO
151.197.0.38 OK
151.197.0.39 OK
151.202.0.84 OK
151.202.0.85 OK
151.203.0.84 OK
151.203.0.85 OK
   192.76.85.133 NO
199.45.32.37 OK
199.45.32.38 OK
199.45.32.40 OK
199.45.32.43 OK
199.166.31.3 OK
   206.111.255.123 NO
   207.225.209.66 NO
   220.233.167.31 NO

Bill
-- 
Bill_MI - Bill in Michigan
Expert Opinions $20, Shut-Up $50
0
Bill_MI
2/22/2009 2:05:15 AM
On Sat, 21 Feb 2009 15:19:19 -0500, Le Flake wrote:

> Picked up your request in grc.news, but I don't subscribe to grc.dns...
> 
> By coincidence, I dumped my ISP'd DNS servers (too slow) earlier this 
> week and used 4.2.2.4, 4.2.2.5. They have handeld my DNS needs 
> impeccably since.
> 
> I thought I'd run a tracert for you to 4.2.2.4 to see where that DNS 
> server is located from my point of view.

Good that you qualified your statement. The Level 3 4.2.2.x DNS servers use
"Anycast" technology, and will trace a different destination, depending on
the location of the origin of the trace route:

| Tracing route to vnsc-pri-dsl.genuity.net [4.2.2.4]
| over a maximum of 30 hops:
| 
|   1    <1 ms     2 ms     2 ms  suzuka.aosake.net [192.168.0.1]
|   2     9 ms     9 ms     9 ms  adsl-68-127-107-254.dsl.pltn13.pacbell.net [68.127.107.254]
|   3    10 ms     9 ms     9 ms  64.164.107.1
|   4    10 ms     9 ms     9 ms  151.164.93.229
|   5    10 ms    10 ms    10 ms  151.164.171.196
|   6    11 ms    10 ms    10 ms  asn3356-level3.eqsjca.sbcglobal.net [151.164.251.246]
|   7    18 ms    17 ms    17 ms  vlan69.csw1.SanJose1.Level3.net [4.68.18.62]
|   8    11 ms    10 ms    11 ms  ge-10-0.core1.SanJose1.Level3.net [4.68.123.6]
|   9    11 ms    11 ms    11 ms  vnsc-pri-dsl.genuity.net [4.2.2.4]
| 
| Trace complete.

I generally don't see a lot of difference between my ISP DNS servers (ATTIS)
and third party DNS servers.

-- 
Norman
~Oh Lord, why have you come
~To Konnyu, with the Lion and the Drum
0
Norman
2/22/2009 2:24:42 AM
This is a multi-part message in MIME format.
--------------070401070505080305080205
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit

Steve Gibson wrote:
> To set a server to test, use the "server" command, like this:

Or you can use it in non-interactive mode:

C:\Users\Sam Schinke>nslookup grc.com 4.2.2.4
Server:  vnsc-pri-dsl.genuity.net
Address:  4.2.2.4

Non-authoritative answer:
Name:    grc.com
Address:  4.79.142.200

I've attached a .bat file (under 1k) that attempts to resolve news.grc.com on 
all of the servers you listed, as well as using the default server for a 
reference comparison. Run as follows, it will provide usable output
(including stderr):

nslookups.bat > dns.out 2>&1

I've attached my dns.out as well. Only the first server (4.2.2.4) resolves 
correctly. One other server (192.76.85.133) just gives a strange result. I'm not 
sure why my default DNS server is timing out, either. :/

Regards,
Sam

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--------------070401070505080305080205--
0
Sam
2/22/2009 3:44:54 AM
On Sat, 21 Feb 2009 11:48:58 -0800, Steve Gibson
<news07_@_grc.com> wrote:

Here's what I got:

> server 4.2.2.4
Default Server:  vnsc-pri-dsl.genuity.net
Address:  4.2.2.4

> grc.com
Server:  vnsc-pri-dsl.genuity.net
Address:  4.2.2.4

Non-authoritative answer:
Name:    grc.com
Address:  4.79.142.200


> server 65.74.140.3
Default Server:  [65.74.140.3]
Address:  65.74.140.3

> grc.com
Server:  [65.74.140.3]
Address:  65.74.140.3

*** [65.74.140.3] can't find grc.com: No response from server


> server 66.90.68.15
Default Server:  [66.90.68.15]
Address:  66.90.68.15

> grc.com
Server:  [66.90.68.15]
Address:  66.90.68.15

*** [66.90.68.15] can't find grc.com: Query refused
> 66.90.68.25


Server:  [66.90.68.15]
Address:  66.90.68.15

*** [66.90.68.15] can't find 66.90.68.25: Query refused
> server 66.90.68.25
Default Server:  [66.90.68.25]
Address:  66.90.68.25

> www.grc.com
Server:  [66.90.68.25]
Address:  66.90.68.25

*** [66.90.68.25] can't find www.grc.com: Query refused


> server 66.90.68.26
DNS request timed out.
    timeout was 2 seconds.
Default Server:  [66.90.68.26]
Address:  66.90.68.26

> grc.com
Server:  [66.90.68.26]
Address:  66.90.68.26

DNS request timed out.
    timeout was 2 seconds.
DNS request timed out.
    timeout was 2 seconds.
*** Request to [66.90.68.26] timed-out


> server 67.138.54.100
Default Server:  [67.138.54.100]
Address:  67.138.54.100

> grc.com
Server:  [67.138.54.100]
Address:  67.138.54.100

DNS request timed out.
    timeout was 2 seconds.
DNS request timed out.
    timeout was 2 seconds.
*** Request to [67.138.54.100] timed-out
> server 151.202.0.84
DNS request timed out.
    timeout was 2 seconds.
Default Server:  [151.202.0.84]
Address:  151.202.0.84

> grc.com


Server:  [151.202.0.84]
Address:  151.202.0.84

Non-authoritative answer:
Name:    grc.com
Address:  4.79.142.200


> server 151.197.0.38
Default Server:  nsphil.bellatlantic.net
Address:  151.197.0.38

> grc.com
Server:  nsphil.bellatlantic.net
Address:  151.197.0.38

Non-authoritative answer:
Name:    grc.com
Address:  4.79.142.200


> server 151.202.  0. 84
Unrecognized command: server 151.202.  0. 84
> server 151.202..0.84
*** Can't find address for server 151.202..0.84: Unspecified
error
> server 151.202.0.84
Default Server:  nyc1-qwest.bellatlantic.net
Address:  151.202.0.84

> grc.com
Server:  nyc1-qwest.bellatlantic.net
Address:  151.202.0.84

Non-authoritative answer:
Name:    grc.com
Address:  4.79.142.200


> server 151.202.0.85
Default Server:  nyc2-qwest.bellatlantic.net
Address:  151.202.0.85

> grc.com
Server:  nyc2-qwest.bellatlantic.net
Address:  151.202.0.85

Non-authoritative answer:
Name:    grc.com
Address:  4.79.142.200


> server 192.76.85.133
Default Server:  vzdns01.verizon.com
Address:  192.76.85.133

> grc.com
Server:  vzdns01.verizon.com
Address:  192.76.85.133

Name:    grc.com
Served by:
- A.ROOT-SERVERS.NET
          198.41.0.4

- G.ROOT-SERVERS.NET
          192.112.36.4

- M.ROOT-SERVERS.NET


- E.ROOT-SERVERS.NET
          192.203.230.10

- J.ROOT-SERVERS.NET
          192.58.128.30

- L.ROOT-SERVERS.NET


- C.ROOT-SERVERS.NET
          192.33.4.12

- H.ROOT-SERVERS.NET
          128.63.2.53

- D.ROOT-SERVERS.NET
          128.8.10.90

- B.ROOT-SERVERS.NET
          192.228.79.201



> server 199.45.32.37
(root)  nameserver = A.ROOT-SERVERS.NET
(root)  nameserver = G.ROOT-SERVERS.NET
(root)  nameserver = M.ROOT-SERVERS.NET
(root)  nameserver = E.ROOT-SERVERS.NET
(root)  nameserver = J.ROOT-SERVERS.NET
(root)  nameserver = L.ROOT-SERVERS.NET
(root)  nameserver = C.ROOT-SERVERS.NET
(root)  nameserver = H.ROOT-SERVERS.NET
(root)  nameserver = D.ROOT-SERVERS.NET
(root)  nameserver = B.ROOT-SERVERS.NET
(root)  nameserver = F.ROOT-SERVERS.NET
(root)  nameserver = I.ROOT-SERVERS.NET
(root)  nameserver = K.ROOT-SERVERS.NET
A.ROOT-SERVERS.NET      AAAA IPv6 address =
2001:503:ba3e:0:0:0:2:30
A.ROOT-SERVERS.NET      internet address = 198.41.0.4
G.ROOT-SERVERS.NET      internet address = 192.112.36.4
E.ROOT-SERVERS.NET      internet address = 192.203.230.10
J.ROOT-SERVERS.NET      AAAA IPv6 address =
2001:503:c27:0:0:0:2:30
J.ROOT-SERVERS.NET      internet address = 192.58.128.30
C.ROOT-SERVERS.NET      internet address = 192.33.4.12
H.ROOT-SERVERS.NET      AAAA IPv6 address =
2001:500:1:0:0:0:803f:235
H.ROOT-SERVERS.NET      internet address = 128.63.2.53
D.ROOT-SERVERS.NET      internet address = 128.8.10.90
B.ROOT-SERVERS.NET      internet address = 192.228.79.201
F.ROOT-SERVERS.NET      AAAA IPv6 address = 2001:500:2f:0:0:0:0:f
F.ROOT-SERVERS.NET      internet address = 192.5.5.241
Default Server:  [199.45.32.37]
Address:  199.45.32.37

> grc.com
Server:  [199.45.32.37]
Address:  199.45.32.37

Non-authoritative answer:
Name:    grc.com
Address:  4.79.142.200


> server 199.45.32.38
Default Server:  nsdc.bellatlantic.net
Address:  199.45.32.38

> grc.com
Server:  nsdc.bellatlantic.net
Address:  199.45.32.38

Non-authoritative answer:
Name:    grc.com
Address:  4.79.142.200


> server 199.45.32.40
Default Server:  legacy-ns1.bellatlantic.net
Address:  199.45.32.40

> grc.com
Server:  legacy-ns1.bellatlantic.net
Address:  199.45.32.40

Non-authoritative answer:
Name:    grc.com
Address:  4.79.142.200


> server 199.45.32.43
Default Server:  home1.bellatlantic.net
Address:  199.45.32.43

> grc.com
Server:  home1.bellatlantic.net
Address:  199.45.32.43

Non-authoritative answer:
Name:    grc.com
Address:  4.79.142.200


> server 199.166.31.3
Default Server:  ns1.quasar.net
Address:  199.166.31.3

> grc.com
Server:  ns1.quasar.net
Address:  199.166.31.3

Non-authoritative answer:
Name:    grc.com
Address:  4.79.142.200


> server 206.111.255.123
DNS request timed out.
    timeout was 2 seconds.
Default Server:  [206.111.255.123]
Address:  206.111.255.123

> grc.com
Server:  [206.111.255.123]
Address:  206.111.255.123

DNS request timed out.
    timeout was 2 seconds.
DNS request timed out.
    timeout was 2 seconds.
*** Request to [206.111.255.123] timed-out


> server 207.225.209.66
DNS request timed out.
    timeout was 2 seconds.
Default Server:  [207.225.209.66]
Address:  207.225.209.66

> grc.com
Server:  [207.225.209.66]
Address:  207.225.209.66

DNS request timed out.
    timeout was 2 seconds.
DNS request timed out.
    timeout was 2 seconds.
*** Request to [207.225.209.66] timed-out


> server 220.233.167.31
DNS request timed out.
    timeout was 2 seconds.
Default Server:  [220.233.167.31]
Address:  220.233.167.31

> grc.com
Server:  [220.233.167.31]
Address:  220.233.167.31

DNS request timed out.
    timeout was 2 seconds.
DNS request timed out.
    timeout was 2 seconds.
*** Request to [220.233.167.31] timed-out
>
0
tbl
2/22/2009 4:11:44 AM
Steve Gibson wrote:

From Qwest DSL (71.219.0.0/16)

>  4.  2.  2.  4
works

> 65. 74.140.  3
no response

> 66. 90. 68. 15
query refused

> 66. 90. 68. 16
query refused

> 66. 90. 68. 25
query refused

> 66. 90. 68. 26
query refused

> 67.138. 54.100
request timed out

>151.197.  0. 38
works

>151.197.  0. 39
works

>151.202.  0. 84
works

>151.202.  0. 85
works

>151.203.  0. 84
works

>151.203.  0. 85
works

>192. 76. 85.133
same weird root servers listing that Mike King got

>199. 45. 32. 37
works

>199. 45. 32. 38
works

>199. 45. 32. 40
works

>199. 45. 32. 43
works

>199.166. 31.  3
works

>206.111.255.123
timed out

>207.225.209. 66
timed out

>220.233.167. 31
timed out

0
CA
2/22/2009 4:16:56 AM
Steve-

From central Massachusetts (Charter cable):

151.197.0.38
151.197.0.39
151.202.0.84
151.202.0.85
151.203.0.84
151.203.0.85
192.76.85.133
199.45.32.37
199.45.32.38
199.45.32.40
199.45.32.43


HTH

jg
0
jg
2/22/2009 4:50:32 AM
"Steve Gibson" <news07_@_grc.com> wrote in message 
news:MPG.2409fa87eda4a1141e91@4.79.142.203...
> Gang,
>
> From the list of available public DNS servers, these are either
> unresponsive or actively rejecting queries from my location:

   4.  2.  2.  4         works
 65. 74.140.  3     no, no response
 66. 90. 68. 15     no, refused
 66. 90. 68. 16     no, refused
 66. 90. 68. 25     no, refused
 66. 90. 68. 26     no, refused
 67.138. 54.100   no, timed out
 151.197.  0. 38    works
 151.197.  0. 39    works
 151.202.  0. 84    works
 151.202.  0. 85    works
 151.203.  0. 84    works
 151.203.  0. 85    works
 192. 76. 85.133   just gave a list of servers, most of A.ROOT-SERVERS.NET 
to M.ROOT-SERVERS.NET, but no actual results
 199. 45. 32. 37    works
 199. 45. 32. 38    works
 199. 45. 32. 40    works
 199. 45. 32. 43    works
 199.166. 31.  3    works
 206.111.255.123  timed out
 207.225.209. 66   timed out
 220.233.167. 31   timed out

BWM 

0
BWM
2/22/2009 5:41:19 AM
On Sat, 21 Feb 2009 in grc.dns, Steve Gibson wrote
>Gang,
>
>From the list of available public DNS servers, these are either 
>unresponsive or actively rejecting queries from my location:

I plugged them into a cool DNS checker I found somewhere <g> and this is 
what it said, I may have missed one or two. The first two are ones I use 
normally:


   199.166. 31.  3 |  Min  |  Avg  |  Max  |Std.Dev|Reliab%|
   ----------------+-------+-------+-------+-------+-------+
   Cached Name     | 0.886 | 1.103 | 1.391 | 0.126 |  61.2 |
   Uncached Name   | 0.985 | 1.301 | 1.629 | 0.154 |  67.6 |
   DotCom Lookup   | 0.981 | 1.430 | 3.420 | 0.539 |  68.0 |
   ----------------+-------+-------+-------+-------+-------+

     4.  2.  2.  3 |  Min  |  Avg  |  Max  |Std.Dev|Reliab%|
   ----------------+-------+-------+-------+-------+-------+
   Cached Name     | 0.009 | 0.011 | 0.015 | 0.002 | 100.0 |
   Uncached Name   | 0.010 | 0.048 | 0.147 | 0.031 | 100.0 |
   DotCom Lookup   | 0.012 | 0.038 | 0.194 | 0.047 | 100.0 |
   ----------------+-------+-------+-------+-------+-------+

     4.  2.  2.  4 |  Min  |  Avg  |  Max  |Std.Dev|Reliab%|
   ----------------+-------+-------+-------+-------+-------+
   Cached Name     | 0.011 | 0.014 | 0.017 | 0.002 | 100.0 |
   Uncached Name   | 0.012 | 0.049 | 0.137 | 0.028 | 100.0 |
   DotCom Lookup   | 0.014 | 0.069 | 0.215 | 0.068 | 100.0 |
   ----------------+-------+-------+-------+-------+-------+

    65. 74.140.  3 | DNS queries are not answered at this IP.

    66. 90. 68. 15 | The DNS server at this IP address is
   actively refusing to answer queries made by this client.
   It should not be used for normal client-based resolution.

    66. 90. 68. 25 | The DNS server at this IP address is
   actively refusing to answer queries made by this client.
   It should not be used for normal client-based resolution.

    66. 90. 68. 26 | The DNS server at this IP address is
   actively refusing to answer queries made by this client.
   It should not be used for normal client-based resolution.

    67.138. 54.100 | DNS queries are not answered at this IP.

   151.197.  0. 38 | DNS queries are not answered at this IP.

   151.197.  0. 39 | DNS queries are not answered at this IP.

   151.202.  0. 84 | DNS queries are not answered at this IP.

   151.202.  0. 85 | DNS queries are not answered at this IP.

   151.203.  0. 84 | DNS queries are not answered at this IP.

   151.203.  0. 85 | DNS queries are not answered at this IP.

   192. 76. 85.133 | The DNS server at this IP address does
   not provide domain name service answering client queries.
   It should not be used for normal client-based resolution.

   199. 45. 32. 37 | DNS queries are not answered at this IP.

   199. 45. 32. 38 | DNS queries are not answered at this IP.

   199. 45. 32. 40 | DNS queries are not answered at this IP.

   199. 45. 32. 43 | DNS queries are not answered at this IP.

   206.111.255.123 | DNS queries are not answered at this IP.

   207.225.209. 66 | DNS queries are not answered at this IP.

   220.233.167. 31 | DNS queries are not answered at this IP.

   UTC: 2009-02-22, from 05:15:05 to 05:18:12, for 03:07.496


-- 
GRC Newsgroups/Guidelines/No Regrets:
http://www.imilly.com/noregrets.htm
 From invalid, Reply To works.
http://www.2kevin.net/munging.html
0
Kevin
2/22/2009 6:28:13 AM
I've attached my results using Sam's batch file.

Slightly unusual DNS set-up here. A couple of windows 2000 servers as 
primary and secondary DNS which then use Treewalk (on an XP Pro machine) and 
my ISP's (Virginmedia formerly know as NTL) DNS servers as forwarders (in 
that order)

-- 
Brian Kelly
Home Page http://kellybk.com
Species Race http://speciesrace.com 


begin 666 dns.out
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`
end

0
Brian
2/22/2009 8:50:45 AM
Hi, Steve


After reading skepticalnewt's post in grc.news.feedback and seeing that 
he included 199.166.31.3 among the "living", I retested and had a result 
something like the following:

     > grc.com
     Server:  ns1.quasar.net
     Address:  199.166.31.3

     DNS request timed out.
         timeout was 2 seconds.

     Non-authoritative answer:
     Name:    grc.com
     Address:  4.79.142.200

The following was the result yesterday early evening or late afternoon 
(and this morning) that made me initially exclude it:

     > server 199.166.31.3
     Default Server:  ns1.quasar.net
     Address:  199.166.31.3

     > grc.com
     Server:  ns1.quasar.net
     Address:  199.166.31.3

     DNS request timed out.
         timeout was 2 seconds.
     DNS request timed out.
         timeout was 2 seconds.
     *** Request to ns1.quasar.net timed-out


I wonder how many of the others are working and then not working like 
that? Or are semi-working?


Well, I've never done this before (I mean, test servers in DOS box or 
anywhere else), but if I followed your instructions correctly, these 
servers seemed to work (in addition possibly to 199.166.31.3):

4.2.2.4
151.197.0.38
151.197.0.39
151.202.0.84
151.202.0.85
151.203.0.84
151.203.0.85
199.45.32.37
199.45.32.38
199.45.32.40
199.45.32.43

You're welcome a million. :)


oat s


Steve Gibson wrote:
> Correction...
> 
> I *AM* getting DNS replies from  199.166.31.3  (ns1.quasar.net)
> 
> But not from *any* others.  :)
> 
> Thanks!
> 
0
oat
2/22/2009 1:42:08 PM
This is a multi-part message in MIME format.
--------------060300060106030301030402
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit

Sam Schinke wrote:
> 
> I've attached a .bat file (under 1k) that attempts to resolve 
> news.grc.com on all of the servers you listed, as well as using the 
> default server for a reference comparison. Run as follows, it will 
> provide usable output
> (including stderr):
> 
> nslookups.bat > dns.out 2>&1
> 

Attached is my results using Sam's batch file.  This is virgin.net (ex NTL).


--------------060300060106030301030402
Content-Type: text/plain;
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Content-Transfer-Encoding: base64
Content-Disposition: inline;
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bnN3ZXI6DQ0KU2VydmVyOiAgY2FjaGUxLnNlcnZpY2UudmlyZ2lubWVkaWEubmV0DQpBZGRy
ZXNzOiAgMTk0LjE2OC40LjEwMA0KDQpOYW1lOiAgICBuZXdzLmdyYy5jb20NCkFkZHJlc3M6
ICA0Ljc5LjE0Mi4yMDMNCg0K
--------------060300060106030301030402--
0
sparky
2/22/2009 4:16:46 PM
"Sam Schinke" <sschinke@gmail.com> wrote in message 
news:gnqhnp$s2c$1@news.grc.com...
> Steve Gibson wrote:
>> To set a server to test, use the "server" command, like this:
>
> Or you can use it in non-interactive mode:

Wow.

Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.

C:\Documents and Settings\Robert>nslookup news.grc.com 4.2.2.4
Server:  vnsc-pri-dsl.genuity.net
Address:  4.2.2.4

Non-authoritative answer:
Name:    news.grc.com
Address:  4.79.142.203


C:\Documents and Settings\Robert>nslookup news.grc.com 65.74.140.3
*** Can't find server name for address 65.74.140.3: No response from server
Server:  UnKnown
Address:  65.74.140.3

*** UnKnown can't find news.grc.com: No response from server

C:\Documents and Settings\Robert>nslookup news.grc.com 66.90.68.15
*** Can't find server name for address 66.90.68.15: Query refused
Server:  UnKnown
Address:  66.90.68.15

*** UnKnown can't find news.grc.com: Query refused

C:\Documents and Settings\Robert>nslookup news.grc.com 66.90.68.16
*** Can't find server name for address 66.90.68.16: Query refused
Server:  UnKnown
Address:  66.90.68.16

*** UnKnown can't find news.grc.com: Query refused

C:\Documents and Settings\Robert>nslookup news.grc.com 66.90.68.25
*** Can't find server name for address 66.90.68.25: Query refused
Server:  UnKnown
Address:  66.90.68.25

*** UnKnown can't find news.grc.com: Query refused

C:\Documents and Settings\Robert>nslookup news.grc.com 66.90.68.26
*** Can't find server name for address 66.90.68.26: Query refused
Server:  UnKnown
Address:  66.90.68.26

*** UnKnown can't find news.grc.com: Query refused

C:\Documents and Settings\Robert>nslookup news.grc.com 67.138.54.100
DNS request timed out.
    timeout was 2 seconds.
*** Can't find server name for address 67.138.54.100: Timed out
Server:  UnKnown
Address:  67.138.54.100

DNS request timed out.
    timeout was 2 seconds.
DNS request timed out.
    timeout was 2 seconds.
*** Request to UnKnown timed-out

C:\Documents and Settings\Robert>nslookup news.grc.com 151.197.0.38
Server:  nsphil.bellatlantic.net
Address:  151.197.0.38

Non-authoritative answer:
Name:    news.grc.com
Address:  4.79.142.203


C:\Documents and Settings\Robert>nslookup news.grc.com 151.197.0.39
Server:  home4.bellatlantic.net
Address:  151.197.0.39

Non-authoritative answer:
Name:    news.grc.com
Address:  4.79.142.203


C:\Documents and Settings\Robert>nslookup news.grc.com 151.202.0.84
Server:  nyc1-qwest.bellatlantic.net
Address:  151.202.0.84

Non-authoritative answer:
Name:    news.grc.com
Address:  4.79.142.203


C:\Documents and Settings\Robert>nslookup news.grc.com 151.202.0.85
Server:  nyc2-qwest.bellatlantic.net
Address:  151.202.0.85

Non-authoritative answer:
Name:    news.grc.com
Address:  4.79.142.203


C:\Documents and Settings\Robert>nslookup news.grc.com 151.203.0.85
Server:  boston2-qwest.bellatlantic.net
Address:  151.203.0.85

Non-authoritative answer:
Name:    news.grc.com
Address:  4.79.142.203


C:\Documents and Settings\Robert>nslookup news.grc.com 151.203.0.85
Server:  boston2-qwest.bellatlantic.net
Address:  151.203.0.85

Non-authoritative answer:
Name:    news.grc.com
Address:  4.79.142.203


C:\Documents and Settings\Robert>nslookup news.grc.com 192.76.85.133
Server:  vzdns01.verizon.com
Address:  192.76.85.133

Name:    news.grc.com
Served by:
- A.ROOT-SERVERS.NET
          198.41.0.4

- G.ROOT-SERVERS.NET
          192.112.36.4

- M.ROOT-SERVERS.NET


- E.ROOT-SERVERS.NET
          192.203.230.10

- J.ROOT-SERVERS.NET
          192.58.128.30

- L.ROOT-SERVERS.NET


- C.ROOT-SERVERS.NET
          192.33.4.12

- H.ROOT-SERVERS.NET
          128.63.2.53

- D.ROOT-SERVERS.NET
          128.8.10.90

- B.ROOT-SERVERS.NET
          192.228.79.201




C:\Documents and Settings\Robert>nslookup news.grc.com 199.45.32.37
Server:  world1.bellatlantic.net
Address:  199.45.32.37

Non-authoritative answer:
Name:    news.grc.com
Address:  4.79.142.203


C:\Documents and Settings\Robert>nslookup news.grc.com 199.45.32.38
Server:  nsdc.bellatlantic.net
Address:  199.45.32.38

Non-authoritative answer:
Name:    news.grc.com
Address:  4.79.142.203


C:\Documents and Settings\Robert>nslookup news.grc.com 199.45.32.40
Server:  legacy-ns1.bellatlantic.net
Address:  199.45.32.40

Non-authoritative answer:
Name:    news.grc.com
Address:  4.79.142.203


C:\Documents and Settings\Robert>nslookup news.grc.com 199.45.32.43
Server:  home1.bellatlantic.net
Address:  199.45.32.43

Non-authoritative answer:
Name:    news.grc.com
Address:  4.79.142.203


C:\Documents and Settings\Robert>nslookup news.grc.com 199.166.255.123
DNS request timed out.
    timeout was 2 seconds.
*** Can't find server name for address 199.166.255.123: Timed out
Server:  UnKnown
Address:  199.166.255.123

DNS request timed out.
    timeout was 2 seconds.
DNS request timed out.
    timeout was 2 seconds.
*** Request to UnKnown timed-out

C:\Documents and Settings\Robert>nslookup news.grc.com 207.225.209.66
DNS request timed out.
    timeout was 2 seconds.
*** Can't find server name for address 207.225.209.66: Timed out
Server:  UnKnown
Address:  207.225.209.66

DNS request timed out.
    timeout was 2 seconds.
DNS request timed out.
    timeout was 2 seconds.
*** Request to UnKnown timed-out

C:\Documents and Settings\Robert>nslookup news.grc.com 220.233.167.31
DNS request timed out.
    timeout was 2 seconds.
*** Can't find server name for address 220.233.167.31: Timed out
Server:  UnKnown
Address:  220.233.167.31

DNS request timed out.
    timeout was 2 seconds.
DNS request timed out.
    timeout was 2 seconds.
*** Request to UnKnown timed-out

C:\Documents and Settings\Robert>nslookup news.grc.com

-- 
Robert


0
Robert
2/22/2009 4:33:13 PM
FWIW I get a non-authoratative answer from L3   (4.2.2.4):

> server 4.2.2.4
Default Server:  vnsc-pri-dsl.genuity.net
Address:  4.2.2.4

> grc.com
Server:  vnsc-pri-dsl.genuity.net
Address:  4.2.2.4

Non-authoritative answer:
Name:    grc.com
Address:  4.79.142.200



Some of the servers may be offline for maintenance etc.  If they are dead, 
they won't do very well on the tests and will sink to the bottom of the pile 
won't they?  They will soon be under radar and sonar... 


0
Kerry
2/22/2009 4:39:11 PM
Results from Belgium, using

$ a=`cat dns.servers`; for b in $a; do echo "#--" $b; \
  nslookup grc.com $b; echo ""; done

#-- 4.2.2.4
Server:  vnsc-pri-dsl.genuity.net
Address:  4.2.2.4

Non-authoritative answer:
Name:    grc.com
Address:  4.79.142.200


#-- 65.74.140.3
*** Can't find server name for address 65.74.140.3: No response from
server
Server:  UnKnown
Address:  65.74.140.3

*** UnKnown can't find grc.com: No response from server

#-- 66.90.68.15
*** Can't find server name for address 66.90.68.15: Query refused
Server:  UnKnown
Address:  66.90.68.15

*** UnKnown can't find grc.com: Query refused

#-- 66.90.68.16
*** Can't find server name for address 66.90.68.16: Query refused
Server:  UnKnown
Address:  66.90.68.16

*** UnKnown can't find grc.com: Query refused

#-- 66.90.68.25
*** Can't find server name for address 66.90.68.25: Query refused
Server:  UnKnown
Address:  66.90.68.25

*** UnKnown can't find grc.com: Query refused

#-- 66.90.68.26
*** Can't find server name for address 66.90.68.26: Query refused
Server:  UnKnown
Address:  66.90.68.26

*** UnKnown can't find grc.com: Query refused

#-- 67.138.54.100
DNS request timed out.
    timeout was 2 seconds.
*** Can't find server name for address 67.138.54.100: Timed out
Server:  UnKnown
Address:  67.138.54.100

DNS request timed out.
    timeout was 2 seconds.
DNS request timed out.
    timeout was 2 seconds.
*** Request to UnKnown timed-out

#-- 151.197.0.38
Server:  nsphil.bellatlantic.net
Address:  151.197.0.38

Non-authoritative answer:
Name:    grc.com
Address:  4.79.142.200


#-- 151.197.0.39
Server:  home4.bellatlantic.net
Address:  151.197.0.39

Non-authoritative answer:
Name:    grc.com
Address:  4.79.142.200


#-- 151.202.0.84
Server:  nyc1-qwest.bellatlantic.net
Address:  151.202.0.84

Non-authoritative answer:
Name:    grc.com
Address:  4.79.142.200


#-- 151.202.0.85
Server:  nyc2-qwest.bellatlantic.net
Address:  151.202.0.85

Non-authoritative answer:
Name:    grc.com
Address:  4.79.142.200


#-- 151.203.0.84
Server:  boston1-qwest.bellatlantic.net
Address:  151.203.0.84

Non-authoritative answer:
Name:    grc.com
Address:  4.79.142.200


#-- 151.203.0.85
Server:  boston2-qwest.bellatlantic.net
Address:  151.203.0.85

Non-authoritative answer:
Name:    grc.com
Address:  4.79.142.200


#-- 192.76.85.133
Server:  vzdns01.verizon.com
Address:  192.76.85.133

Name:    grc.com
Served by:
- A.ROOT-SERVERS.NET
          198.41.0.4

- G.ROOT-SERVERS.NET
          192.112.36.4

- M.ROOT-SERVERS.NET


- E.ROOT-SERVERS.NET
          192.203.230.10

- J.ROOT-SERVERS.NET
          192.58.128.30

- L.ROOT-SERVERS.NET


- C.ROOT-SERVERS.NET
          192.33.4.12

- H.ROOT-SERVERS.NET
          128.63.2.53

- D.ROOT-SERVERS.NET
          128.8.10.90

- B.ROOT-SERVERS.NET
          192.228.79.201




#-- 199.45.32.37
Server:  world1.bellatlantic.net
Address:  199.45.32.37

Non-authoritative answer:
Name:    grc.com
Address:  4.79.142.200


#-- 199.45.32.38
Server:  nsdc.bellatlantic.net
Address:  199.45.32.38

Non-authoritative answer:
Name:    grc.com
Address:  4.79.142.200


#-- 199.45.32.40
Server:  legacy-ns1.bellatlantic.net
Address:  199.45.32.40

Non-authoritative answer:
Name:    grc.com
Address:  4.79.142.200


#-- 199.45.32.43
Server:  home1.bellatlantic.net
Address:  199.45.32.43

Non-authoritative answer:
Name:    grc.com
Address:  4.79.142.200


#-- 199.166.31.3
*** Can't find server name for address 199.166.31.3: Server failed
Server:  UnKnown
Address:  199.166.31.3

Non-authoritative answer:
Name:    grc.com
Address:  4.79.142.200


#-- 206.111.255.123
DNS request timed out.
    timeout was 2 seconds.
*** Can't find server name for address 206.111.255.123: Timed out
Server:  UnKnown
Address:  206.111.255.123

DNS request timed out.
    timeout was 2 seconds.
DNS request timed out.
    timeout was 2 seconds.
*** Request to UnKnown timed-out

#-- 207.225.209.66
DNS request timed out.
    timeout was 2 seconds.
*** Can't find server name for address 207.225.209.66: Timed out
Server:  UnKnown
Address:  207.225.209.66

DNS request timed out.
    timeout was 2 seconds.
DNS request timed out.
    timeout was 2 seconds.
*** Request to UnKnown timed-out

#-- 220.233.167.31
DNS request timed out.
    timeout was 2 seconds.
*** Can't find server name for address 220.233.167.31: Timed out
Server:  UnKnown
Address:  220.233.167.31

DNS request timed out.
    timeout was 2 seconds.
DNS request timed out.
    timeout was 2 seconds.
*** Request to UnKnown timed-out
0
Ton
2/22/2009 5:03:15 PM
Lookups from rogers cable in Oshawa, ON, 
Canada

 > server 4.2.2.4
Default Server:  vnsc-pri-dsl.genuity.net
Address:  4.2.2.4

 > server 65.74.140.3
Default Server:  [65.74.140.3]
Address:  65.74.140.3

 > server 66.90.68.15
DNS request timed out.
     timeout was 2 seconds.
Default Server:  [66.90.68.15]
Address:  66.90.68.15

 > server 66.90.68.16
Default Server:  [66.90.68.16]
Address:  66.90.68.16

 > server 66.90.68.25
Default Server:  [66.90.68.25]
Address:  66.90.68.25

 > server 66.90.68.26
Default Server:  [66.90.68.26]
Address:  66.90.68.26

 > server 67.138.54.100
Default Server:  [67.138.54.100]
Address:  67.138.54.100

 > server 151.197.0.38
DNS request timed out.
     timeout was 2 seconds.
Default Server:  [151.197.0.38]
Address:  151.197.0.38

 > server 151.197.0.39
Default Server:  home4.bellatlantic.net
Address:  151.197.0.39

 > server 151.202.0.84
Default Server:  nyc1-qwest.bellatlantic.net
Address:  151.202.0.84

 > server 151.202.0.85
Default Server:  nyc2-qwest.bellatlantic.net
Address:  151.202.0.85

 > server 151.203.0.84
Default Server: 
boston1-qwest.bellatlantic.net
Address:  151.203.0.84

 > server 151.203.0.85
Default Server: 
boston2-qwest.bellatlantic.net
Address:  151.203.0.85

 > server 192.76.85.133
Default Server:  vzdns01.verizon.com
Address:  192.76.85.133

 > server 199.45.32.133
(root)  nameserver = A.ROOT-SERVERS.NET
(root)  nameserver = G.ROOT-SERVERS.NET
(root)  nameserver = M.ROOT-SERVERS.NET
(root)  nameserver = E.ROOT-SERVERS.NET
(root)  nameserver = J.ROOT-SERVERS.NET
(root)  nameserver = L.ROOT-SERVERS.NET
(root)  nameserver = C.ROOT-SERVERS.NET
(root)  nameserver = H.ROOT-SERVERS.NET
(root)  nameserver = D.ROOT-SERVERS.NET
(root)  nameserver = B.ROOT-SERVERS.NET
(root)  nameserver = F.ROOT-SERVERS.NET
(root)  nameserver = I.ROOT-SERVERS.NET
(root)  nameserver = K.ROOT-SERVERS.NET
A.ROOT-SERVERS.NET      AAAA IPv6 address 
= 2001:503:ba3e::2:30
A.ROOT-SERVERS.NET      internet address = 
198.41.0.4
G.ROOT-SERVERS.NET      internet address = 
192.112.36.4
E.ROOT-SERVERS.NET      internet address = 
192.203.230.10
J.ROOT-SERVERS.NET      AAAA IPv6 address 
= 2001:503:c27::2:30
J.ROOT-SERVERS.NET      internet address = 
192.58.128.30
C.ROOT-SERVERS.NET      internet address = 
192.33.4.12
H.ROOT-SERVERS.NET      AAAA IPv6 address 
= 2001:500:1::803f:235
H.ROOT-SERVERS.NET      internet address = 
128.63.2.53
D.ROOT-SERVERS.NET      internet address = 
128.8.10.90
B.ROOT-SERVERS.NET      internet address = 
192.228.79.201
F.ROOT-SERVERS.NET      AAAA IPv6 address 
= 2001:500:2f::f
F.ROOT-SERVERS.NET      internet address = 
192.5.5.241
Default Server:  [199.45.32.133]
Address:  199.45.32.133

 > server 199.45.32.37
DNS request timed out.
     timeout was 2 seconds.
Default Server:  [199.45.32.37]
Address:  199.45.32.37

 > server 199.45.32.38
Default Server:  nsdc.bellatlantic.net
Address:  199.45.32.38

 > server 199.45.32.40
Default Server:  legacy-ns1.bellatlantic.net
Address:  199.45.32.40

 > server 199.45.32.43
Default Server:  home1.bellatlantic.net
Address:  199.45.32.43

 > server 199.166.31.3
Default Server:  ns1.quasar.net
Address:  199.166.31.3

 > server 206.111.255.123
DNS request timed out.
     timeout was 2 seconds.
Default Server:  [206.111.255.123]
Address:  206.111.255.123

 > server 207.225.209.66
DNS request timed out.
     timeout was 2 seconds.
Default Server:  [207.225.209.66]
Address:  207.225.209.66

 > server 220.233.167.31
DNS request timed out.
     timeout was 2 seconds.
Default Server:  [220.233.167.31]
Address:  220.233.167.31

LeonGee
0
LeonGee
2/22/2009 5:43:00 PM
Steve,

here are my responses (sorry for the German replies...)


Microsoft Windows XP [Version 5.1.2600]
(C) Copyright 1985-2001 Microsoft Corp.

C:\WINDOWS\system32>nslookup
*** Der Servername f�r die Adresse 192.168.2.1 konnte nicht gefunden 
werden:
Non-existent domain
*** Die Standardserver sind nicht verf�gbar.
Standardserver:  UnKnown
Address:  192.168.2.1

> nslookup grc.com
Server:  grc.com
Address:  4.79.142.200

DNS request timed out.
    timeout was 2 seconds.
*** Zeit�berschreitung bei Anforderung an grc.com
> nslookup 4.2.2.4
Server:  [4.2.2.4]
Address:  4.2.2.4

*** nslookup wurde von 4.2.2.4 nicht gefunden: Non-existent domain
> server 4.2.2.4
Standardserver:  vnsc-pri-dsl.genuity.net
Address:  4.2.2.4

> lookup grc.com
Server:  grc.com
Address:  4.79.142.200

DNS request timed out.
    timeout was 2 seconds.
*** Zeit�berschreitung bei Anforderung an grc.com
> server 65.74.140.3
Standardserver:  [65.74.140.3]
Address:  65.74.140.3

> grc.com
Server:  [65.74.140.3]
Address:  65.74.140.3

*** grc.com wurde von [65.74.140.3] nicht gefunden: No response from 
server
> server 4.2.2.4
Standardserver:  [4.2.2.4]
Address:  4.2.2.4

> grc.com
Server:  [4.2.2.4]
Address:  4.2.2.4

Nicht autorisierte Antwort:
Name:    grc.com
Address:  4.79.142.200

> server 65.74.140.3
Standardserver:  [65.74.140.3]
Address:  65.74.140.3

> grc.com
Server:  [65.74.140.3]
Address:  65.74.140.3

*** grc.com wurde von [65.74.140.3] nicht gefunden: No response from 
server
> server 66.90.68.15
Standardserver:  [66.90.68.15]
Address:  66.90.68.15

> grc.com
Server:  [66.90.68.15]
Address:  66.90.68.15

*** grc.com wurde von [66.90.68.15] nicht gefunden: Query refused
> server 66.90.68.16
Standardserver:  [66.90.68.16]
Address:  66.90.68.16

> grc.com
Server:  [66.90.68.16]
Address:  66.90.68.16

*** grc.com wurde von [66.90.68.16] nicht gefunden: Query refused
> server 66.90.68.25
Standardserver:  [66.90.68.25]
Address:  66.90.68.25

> grc.com
Server:  [66.90.68.25]
Address:  66.90.68.25

*** grc.com wurde von [66.90.68.25] nicht gefunden: Query refused
> server 66.90.68.26
Standardserver:  [66.90.68.26]
Address:  66.90.68.26

> grc.com
Server:  [66.90.68.26]
Address:  66.90.68.26

*** grc.com wurde von [66.90.68.26] nicht gefunden: Query refused
> server 67.138.54.100
Standardserver:  [67.138.54.100]
Address:  67.138.54.100

> grc.com
Server:  [67.138.54.100]
Address:  67.138.54.100

DNS request timed out.
    timeout was 2 seconds.
DNS request timed out.
    timeout was 2 seconds.
*** Zeit�berschreitung bei Anforderung an [67.138.54.100]
> server 151.197.0.38
DNS request timed out.
    timeout was 2 seconds.
Standardserver:  [151.197.0.38]
Address:  151.197.0.38

> grc.com
Server:  [151.197.0.38]
Address:  151.197.0.38

Nicht autorisierte Antwort:
Name:    grc.com
Address:  4.79.142.200

> server 151.197.0.39
Standardserver:  home4.bellatlantic.net
Address:  151.197.0.39

> grc.com
Server:  home4.bellatlantic.net
Address:  151.197.0.39

Nicht autorisierte Antwort:
Name:    grc.com
Address:  4.79.142.200

> server 151.202.0.84
Standardserver:  nyc1-qwest.bellatlantic.net
Address:  151.202.0.84

> grc.com
Server:  nyc1-qwest.bellatlantic.net
Address:  151.202.0.84

Nicht autorisierte Antwort:
Name:    grc.com
Address:  4.79.142.200

> server 151.202.0.85
Standardserver:  nyc2-qwest.bellatlantic.net
Address:  151.202.0.85

> grc.com
Server:  nyc2-qwest.bellatlantic.net
Address:  151.202.0.85

Nicht autorisierte Antwort:
Name:    grc.com
Address:  4.79.142.200

> server 151.203.0.84
Standardserver:  boston1-qwest.bellatlantic.net
Address:  151.203.0.84

> grc.com
Server:  boston1-qwest.bellatlantic.net
Address:  151.203.0.84

Nicht autorisierte Antwort:
Name:    grc.com
Address:  4.79.142.200

> server 151.203.0.85
Standardserver:  boston2-qwest.bellatlantic.net
Address:  151.203.0.85

> grc.com
Server:  boston2-qwest.bellatlantic.net
Address:  151.203.0.85

Nicht autorisierte Antwort:
Name:    grc.com
Address:  4.79.142.200

> server 192.76.85.133
Standardserver:  vzdns01.verizon.com
Address:  192.76.85.133

> grc.com
Server:  vzdns01.verizon.com
Address:  192.76.85.133

Name:    grc.com
Served by:
- A.ROOT-SERVERS.NET
          198.41.0.4

- G.ROOT-SERVERS.NET
          192.112.36.4

- M.ROOT-SERVERS.NET


- E.ROOT-SERVERS.NET
          192.203.230.10

- J.ROOT-SERVERS.NET
          192.58.128.30

- L.ROOT-SERVERS.NET


- C.ROOT-SERVERS.NET
          192.33.4.12

- H.ROOT-SERVERS.NET
          128.63.2.53

- D.ROOT-SERVERS.NET
          128.8.10.90

- B.ROOT-SERVERS.NET
          192.228.79.201



> server 199.45.32.37
(root)  nameserver = A.ROOT-SERVERS.NET
(root)  nameserver = G.ROOT-SERVERS.NET
(root)  nameserver = M.ROOT-SERVERS.NET
(root)  nameserver = E.ROOT-SERVERS.NET
(root)  nameserver = J.ROOT-SERVERS.NET
(root)  nameserver = L.ROOT-SERVERS.NET
(root)  nameserver = C.ROOT-SERVERS.NET
(root)  nameserver = H.ROOT-SERVERS.NET
(root)  nameserver = D.ROOT-SERVERS.NET
(root)  nameserver = B.ROOT-SERVERS.NET
(root)  nameserver = F.ROOT-SERVERS.NET
(root)  nameserver = I.ROOT-SERVERS.NET
(root)  nameserver = K.ROOT-SERVERS.NET
A.ROOT-SERVERS.NET      AAAA IPv6 address = 2001:503:ba3e::2:30
A.ROOT-SERVERS.NET      internet address = 198.41.0.4
G.ROOT-SERVERS.NET      internet address = 192.112.36.4
E.ROOT-SERVERS.NET      internet address = 192.203.230.10
J.ROOT-SERVERS.NET      AAAA IPv6 address = 2001:503:c27::2:30
J.ROOT-SERVERS.NET      internet address = 192.58.128.30
C.ROOT-SERVERS.NET      internet address = 192.33.4.12
H.ROOT-SERVERS.NET      AAAA IPv6 address = 2001:500:1::803f:235
H.ROOT-SERVERS.NET      internet address = 128.63.2.53
D.ROOT-SERVERS.NET      internet address = 128.8.10.90
B.ROOT-SERVERS.NET      internet address = 192.228.79.201
F.ROOT-SERVERS.NET      AAAA IPv6 address = 2001:500:2f::f
F.ROOT-SERVERS.NET      internet address = 192.5.5.241
Standardserver:  [199.45.32.37]
Address:  199.45.32.37

> grc.com
Server:  [199.45.32.37]
Address:  199.45.32.37

Nicht autorisierte Antwort:
Name:    grc.com
Address:  4.79.142.200

> server 199.45.32.38
Standardserver:  nsdc.bellatlantic.net
Address:  199.45.32.38

> grc.com
Server:  nsdc.bellatlantic.net
Address:  199.45.32.38

Nicht autorisierte Antwort:
Name:    grc.com
Address:  4.79.142.200

> server 199.45.32.40
Standardserver:  legacy-ns1.bellatlantic.net
Address:  199.45.32.40

> grc.com
Server:  legacy-ns1.bellatlantic.net
Address:  199.45.32.40

Nicht autorisierte Antwort:
Name:    grc.com
Address:  4.79.142.200

> server 199.45.32.43
Standardserver:  home1.bellatlantic.net
Address:  199.45.32.43

> grc.com
Server:  home1.bellatlantic.net
Address:  199.45.32.43

Nicht autorisierte Antwort:
Name:    grc.com
Address:  4.79.142.200

> server 199.166.31.3
Standardserver:  ns1.quasar.net
Address:  199.166.31.3

> grc.com
Server:  ns1.quasar.net
Address:  199.166.31.3

DNS request timed out.
    timeout was 2 seconds.
DNS request timed out.
    timeout was 2 seconds.
*** Zeit�berschreitung bei Anforderung an ns1.quasar.net
> server 206.111.255.123
Standardserver:  206.111.255.123.ptr.us.xo.net
Address:  206.111.255.123

> grc.com
Server:  206.111.255.123.ptr.us.xo.net
Address:  206.111.255.123

DNS request timed out.
    timeout was 2 seconds.
DNS request timed out.
    timeout was 2 seconds.
*** Zeit�berschreitung bei Anforderung an 206.111.255.123.ptr.us.xo.net
>
> server 207.225.209.66
DNS request timed out.
    timeout was 2 seconds.
Standardserver:  [207.225.209.66]
Address:  207.225.209.66

> grc.com
Server:  [207.225.209.66]
Address:  207.225.209.66

DNS request timed out.
    timeout was 2 seconds.
DNS request timed out.
    timeout was 2 seconds.
*** Zeit�berschreitung bei Anforderung an [207.225.209.66]
>
> server 220.233.167.31
DNS request timed out.
    timeout was 2 seconds.
Standardserver:  [220.233.167.31]
Address:  220.233.167.31

> grc.com
Server:  [220.233.167.31]
Address:  220.233.167.31

DNS request timed out.
    timeout was 2 seconds.
DNS request timed out.
    timeout was 2 seconds.
*** Zeit�berschreitung bei Anforderung an [220.233.167.31]
>

Jerry
0
Jerry
2/22/2009 6:08:03 PM
Ok here. I do get my internal router address first and then grc's current 
address next............... 8-) 


0
jerry
2/22/2009 7:27:31 PM
Steve Gibson wrote:

>   4.  2.  2.  4     works
>  65. 74.140.  3 *** Request to [65.74.140.3] timed-out
>  66. 90. 68. 15 *** [66.90.68.15] can't find grc.com: Query refused
>  66. 90. 68. 16 *** [66.90.68.16] can't find grc.com: Query refused
>  66. 90. 68. 25 *** [66.90.68.25] can't find grc.com: Query refused
>  66. 90. 68. 26 *** [66.90.68.26] can't find grc.com: Query refused
>  67.138. 54.100 *** Request to [67.138.54.100] timed-out
> 151.197.  0. 38     works
> 151.197.  0. 39     works
> 151.202.  0. 84     works
> 151.202.  0. 85     works
> 151.203.  0. 84     works
> 151.203.  0. 85     works
> 192. 76. 85.133 *** vzdns01.verizon.com can't find grc.com: BAD ERROR VALUE
> 199. 45. 32. 37     works
> 199. 45. 32. 38     works
> 199. 45. 32. 40     works
> 199. 45. 32. 43     works
> 199.166. 31.  3 *** Request to ns1.quasar.net timed-out
> 206.111.255.123 *** Request to [206.111.255.123] timed-out
> 207.225.209. 66 *** Request to [207.225.209.66] timed-out
> 220.233.167. 31 *** Request to [220.233.167.31] timed-out

> So my question is ... do **ANY** of those nameserver listed 
> above work for **ANYONE** ???

Hi Steve,

11 of them work for me.... and the other 11 don't.

I'm in Sydney. Australia, my ISP is Telstra's Bigpond.

Nigel
0
Nigel
2/23/2009 12:42:30 AM
"Steve Gibson" <news07_@_grc.com> wrote in message 
news:MPG.2409fa87eda4a1141e91@4.79.142.203...
> Gang,
>>
> So my question is ... do **ANY** of those nameserver listed
> above work for **ANYONE** ???
>
> Thanks a million!!!
>

I knew the Level 3 one wasn't dead before I tested because I use it (when it 
works).  Sometimes though 4.2.2.4 IS dead. I find that I have to keep 
switching DNS servers because they stop working. I use 4.2.2.4 and 
128.171.3.13 (University of Hawaii) and when those suddenly stop working, I 
switch to my ISP's DNS servers (3 in Hawaii and one at Orange, California 
RR) and when those stop working, I switch back to the first two.  Sometimes 
NONE of them work for 10 minutes or longer.  Usually if they stop working it 
is during prime usage time in Hawaii.

All others on the list are dead except I got the same strange response 
others have reported for 192.76.85.

But given the strange things I have been seeing recently with the various 
DNS servers I use, some on that list that were dead when I tested them may 
well be alive the next time I test. 


0
Melelina
2/24/2009 7:37:19 AM
"Melelina" <melelina@medscape.com> wrote in message 
news:go083i$2f82$1@news.grc.com...

...snip Steve's original post

>
> I knew the Level 3 one wasn't dead before I tested because I use it (when 
> it
> works).  Sometimes though 4.2.2.4 IS dead. I find that I have to keep
> switching DNS servers because they stop working. I use 4.2.2.4 and
> 128.171.3.13 (University of Hawaii) and when those suddenly stop working, 
> I
> switch to my ISP's DNS servers (3 in Hawaii and one at Orange, California
> RR) and when those stop working, I switch back to the first two. 
> Sometimes
> NONE of them work for 10 minutes or longer.  Usually if they stop working 
> it
> is during prime usage time in Hawaii.
>
> All others on the list are dead except I got the same strange response
> others have reported for 192.76.85.
>
> But given the strange things I have been seeing recently with the various
> DNS servers I use, some on that list that were dead when I tested them may
> well be alive the next time I test.


ONE thing that Steve and everyone should keep in mind - especially with the 
Level3 servers - is that the IP addresses 4.2.2.1 thru .6 (at least) are 
dynamically routed by border routers to the closest Level3 server (there 
likely is an official name for this effect, but I do not know it). It is 
possible that this dynamic routing might occasionally result in dead ends 
because changes have not been completely distributed to all border 
gateways...   This is likely the case with some other public dns providers 
(Sprint? etc) who operate a network of dns servers, not just some beige box 
back at the rack at the ISP...

:-)


0
Kerry
2/24/2009 1:49:16 PM
[for the unabridged version, see Kerry Liles's post above]

> ONE thing that Steve and everyone should keep in mind -
> especially with the Level3 servers - is that the IP addresses
> 4.2.2.1 thru .6 (at least) are dynamically routed by border
> routers to the closest Level3 server (there likely is an
> official name for this effect, but I do not know it). It is 
> possible that this dynamic routing might occasionally result
> in dead ends because changes have not been completely
> distributed to all border gateways...   This is likely the
> case with some other public dns providers (Sprint? etc) who
> operate a network of dns servers, not just some beige box 
> back at the rack at the ISP...

In my case, since only that one of the six IPs continually fails 
I'm guessing that it's a static configuration problem of some 
sort.

It's also interesting (to me) that none of Verizon's DNS servers 
are available to me (within Cogent's IP space.)

-- 
________________________________________________________________
Steve.  Working on: GRC's DNS nameserver spoofability testing.
        https://www.grc.com/dns/dns.htm
0
Steve
2/24/2009 3:40:42 PM
Steve Gibson <news07_@_grc.com> wrote in news:MPG.2409fa87eda4a1141e91@
4.79.142.203:

> So my question is ... do **ANY** of those nameserver listed 
> above work for **ANYONE** ???
> 
> Thanks a million!!!
> 

I managed to get the Verizon DNS to work ... but then I am on Verizon, 
so that might be the difference.  Here is what I got:

> server 4.2.2.4
Default Server:  vnsc-pri-dsl.genuity.net
Address:  4.2.2.4

> grc.com
Server:  vnsc-pri-dsl.genuity.net
Address:  4.2.2.4

Non-authoritative answer:
Name:    grc.com
Address:  4.79.142.200


-- 
MikeD
0
MikeD
2/26/2009 6:14:29 PM
Reply:

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