Simple question regarding NSLOOKUP

[Dennis Black]

Hi,

I am trying to interpret the results from NSLookup. My command line
looks like:

nslookup cnn.com 207.90.100.25


The result I get is shown below. I don't know why does it return all
these servers but not the actual A records.



prompt> nslookup cnn.com 207.90.100.25

Server: e2.ns.voyager.net
Address: 207.90.100.25

Name: cnn.com.
Served by:
- I.GTLD-SERVERS.NET
192.43.172.30
com
- J.GTLD-SERVERS.NET
192.48.79.30
com
- K.GTLD-SERVERS.NET
192.52.178.30
com
- L.GTLD-SERVERS.NET
192.41.162.30
com
- M.GTLD-SERVERS.NET
192.55.83.30
com
- A.GTLD-SERVERS.NET
192.5.6.30
com
- B.GTLD-SERVERS.NET
192.33.14.30
com
- C.GTLD-SERVERS.NET
192.26.92.30
com
- D.GTLD-SERVERS.NET
192.31.80.30
com
- E.GTLD-SERVERS.NET
192.12.94.30
com

 

[Herb Martin]

Hi,

I am trying to interpret the results from NSLookup. My command line
looks like:

nslookup cnn.com 207.90.100.25

The result I get is shown below. I don't know why does it return all
these servers but not the actual A records.

prompt> nslookup cnn.com 207.90.100.25

That is just 207.90.100.25 telling you to go ask
someone else -- he isn't going to recurse for you
but is giving you enough info to find it yourself.

Try...

nslookup cnn.com 192.43.172.30

But that gets you a similar list from which you can try:

nslookup cnn.com 149.174.213.151

(Which also gets a similar list BUT also gets you the

 

[Kevin D. Goodknecht Sr. [MVP]]

In

Hi,

I am trying to interpret the results from NSLookup. My command line
looks like:

nslookup cnn.com 207.90.100.25


The result I get is shown below. I don't know why does it return all
these servers but not the actual A records.



prompt> nslookup cnn.com 207.90.100.25

Server: e2.ns.voyager.net
Address: 207.90.100.25

Name: cnn.com.
Served by:
- I.GTLD-SERVERS.NET
192.43.172.30
com
- J.GTLD-SERVERS.NET
192.48.79.30
com
- K.GTLD-SERVERS.NET
192.52.178.30
com
- L.GTLD-SERVERS.NET
192.41.162.30
com
- M.GTLD-SERVERS.NET
192.55.83.30
com
- A.GTLD-SERVERS.NET
192.5.6.30
com
- B.GTLD-SERVERS.NET
192.33.14.30
com
- C.GTLD-SERVERS.NET
192.26.92.30
com
- D.GTLD-SERVERS.NET
192.31.80.30
com
- E.GTLD-SERVERS.NET
192.12.94.30
com

This is the answer a non-recursive DNS gives, it is a referral to the Root
servers.

 

[Ace Fekay [MVP]]

In

Hi,

I am trying to interpret the results from NSLookup. My command line
looks like:

nslookup cnn.com 207.90.100.25


The result I get is shown below. I don't know why does it return all
these servers but not the actual A records.

<snip>

As Kevin said, 207.90.100.25 is a non-recursive DNS (it's comfigured NOT to
forward queries if it doesn't have an answer to in it's own list of zones
and refers you to the Roots).

Try it with a recursive DNS:.

nslookup cnn.com 4.2.2.2

You'll see what we mean.


--
Regards,
Ace

Please direct all replies ONLY to the Microsoft public newsgroups
so all can benefit.

This posting is provided "AS-IS" with no warranties or guarantees
and confers no rights.

Ace Fekay, MCSE 2003 & 2000, MCSA 2003 & 2000, MCSE+I, MCT, MVP
Microsoft Windows MVP - Windows Server - Directory Services
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