Solved

NS lookup shows a different for domain ?

Posted on 2011-09-21
5
234 Views
Last Modified: 2012-05-12
Hi

I registered a domain name with Godaddy and added a couple of namservers

ns1.domainns.com - 123.xxx.xxx.1
ns1.domainns.com - 123.xxx.xxx.1
These nameserver records were created on my own DNS server (Windows 2008)
I also setup an A record www.domainns.com --- 123.xxx.xxx.5

Tested the setup with URL's resolving to the IP address specified on my DNS server

After a week and a bit a ping test and nsloolup of my domain showed a different IP (belonged to  domains.theplanet.com)  

I went back into my Godaddy account to check the host records and the IP address of the ns records I created hadn't changed. Not sure how this happened.  Can anyone explain how this could be and how to stop it ???

Thanks
0
Comment
Question by:Cobraiti
  • 3
  • 2
5 Comments
 
LVL 21

Expert Comment

by:Papertrip
ID: 36578317
Goto networktools.com and put your IP into the box, leave the default Express search checked.

Double check things like A/PTR record, whois output -- make sure it all looks right.  If you see something there you were not expecting, paste it here.  Try to not sanitize the data too much.
0
 
LVL 21

Expert Comment

by:Papertrip
ID: 36578346
I'm going to guess you didn't setup a PTR record to match your A record.  When you did the ping/nslookup tests that showed domains.theplanet.com, did you use the IP or hostname?  Is your server hosted at Softlayer by any chance?
0
 

Author Comment

by:Cobraiti
ID: 36578606
I setup a PTR record as well  

Used the ping test first to see where the domain was resolving too and then did a nslookup of the IP address which went to domains.theplanet.com instead of my dns server ns1.domainns.com

The DNS is on a dedicated box in our datacenter.

Don't seem to under how this happened ?

I've had to turn of DNS services for the moment. But has this happenend to anyone before. Is there a security setting to be enabled on my DNS server
0
 
LVL 21

Accepted Solution

by:
Papertrip earned 500 total points
ID: 36578635
Did you run the IP at networktools.com?
Are you testing from an internal network only?
Are you certain you have reverse DNS authority delegated to you for that IP?

If the results from networktools.com, or any external DNS query, shows you the domains.theplanet.com result, then either:
A.  You don't have DNS authority of that IP from your service provider
B.  The old PTR record for that IP has a super-high TTL and hasn't expired from whatever cache you might be hitting.

Pasting outputs of commands you run while testing will make this go faster.
0
 

Author Closing Comment

by:Cobraiti
ID: 36707632
Found out the problem - user error !

Thanks for pointing it out
0

Featured Post

3 Use Cases for Connected Systems

Our Dev teams are like yours. They’re continually cranking out code for new features/bugs fixes, testing, deploying, testing some more, responding to production monitoring events and more. It’s complex. So, we thought you’d like to see what’s working for us.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Most DNS problems are VERY easily troubleshot and identifiable if you can follow the steps a DNS query takes. I would like to share the step-by-step a DNS query takes from the origin to the destination. _____________________________________________…
I've written instructions for one router type, but this principle may be useful for others of the same brand and even other brands of router. Problem: I had an issue especially with mobile devices that refused to use DNS information supplied via…
This Micro Tutorial demonstrates using Microsoft Excel pivot tables, how to reverse engineer competitors' marketing strategies through backlinks.
Although Jacob Bernoulli (1654-1705) has been credited as the creator of "Binomial Distribution Table", Gottfried Leibniz (1646-1716) did his dissertation on the subject in 1666; Leibniz you may recall is the co-inventor of "Calculus" and beat Isaac…

777 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question