What's up with my looping DNS?

[Barry Margolin]

In article <d7iabh$24qc$1 at sf1.isc.org>,
 "Someone" <someone at somewhere.net> wrote:

> If this is the wrong place for this question, please advise.
> 
> We changed the nameservers on a domain registered at NetSol.  Both the before 
> and
> after nameservers were third-party, not NetSol.  But, after four days, it 
> still wasn't
> working.
> When we did a query, we'd get stuck in some kind of loop.
> 
> Thinking it might be a problem with the third-party nameserver, we changed it 
> to NetSol's
> own managed nameservers to see what would happen.  But here we are, days 
> later, and
> it's still looping.
> 
> What makes this happen?  It's just a simple A record pointing to an IP 
> address, the same
> way we've set up hundreds of others without trouble.  I've posted a sample of 
> what we're
> getting below.  Notice how it resolves to the right nameserver, 
> ns95.worldnic.com.  But
> instead of getting an answer with the IP address, it just refers back out to 
> a root
> server.

This means that NetSol has not actually installed the zone on their 
nameservers.

Why don't you tell us the real domain name?

> 
> Thanks.
> 
> ===
> 
> Searching for <domain>.org A record at g.root-servers.net [192.112.36.4]: Got 
> referral to
> TLD5.ULTRADNS.INFO. [took 149 ms]
> Searching for <domain>.org A record at TLD5.ULTRADNS.INFO. [192.100.59.11]: 
> Got referral
> to ns95.worldnic.com. [took 5 ms]
> Searching for <domain>.org A record at ns95.worldnic.com. [216.168.228.50]: 
> Got referral
> to I.ROOT-SERVERS.NET. [took 8 ms]
> Searching for <domain>.org A record at I.ROOT-SERVERS.NET. [192.36.148.17]: 
> Got referral
> to TLD4.ULTRADNS.org. [took 4 ms]
> Searching for <domain>.org A record at TLD4.ULTRADNS.org. [199.7.67.1]: Got 
> referral to
> ns95.worldnic.com. [took 10 ms]
> Searching for <domain>.org A record at ns95.worldnic.com. [216.168.228.50]: 
> Got referral
> to K.ROOT-SERVERS.NET. [took 6 ms]
> Searching for <domain>.org A record at K.ROOT-SERVERS.NET. [193.0.14.129]: 
> Got referral to
> tld1.ultradns.net. [took 84 ms]
> Searching for <domain>.org A record at tld1.ultradns.net. [204.74.112.1]: Got 
> referral to
> ns96.worldnic.com. [took 2 ms]
> Searching for <domain>.org A record at ns96.worldnic.com. [216.168.225.236]: 
> Got referral
> to L.ROOT-SERVERS.NET. [took 7 ms]
> Searching for <domain>.org A record at L.ROOT-SERVERS.NET. [198.32.64.12]: 
> Got referral to
> TLD1.ULTRADNS.NET. [took 73 ms]
> Searching for <domain>.org A record at TLD1.ULTRADNS.NET. [204.74.112.1]: Got 
> referral to
> ns96.worldnic.com. [took 3 ms]
> Searching for <domain>.org A record at ns96.worldnic.com. [216.168.225.236]: 
> Got referral
> to B.ROOT-SERVERS.NET. [took 7 ms]
> Searching for <domain>.org A record at B.ROOT-SERVERS.NET. [192.228.79.201]: 
> Got referral
> to TLD6.ULTRADNS.CO.UK. [took 86 ms]
> Searching for <domain>.org A record at TLD6.ULTRADNS.CO.UK. [198.133.199.11]: 
> Got referral
> to ns95.worldnic.com. [took 18 ms]
> Searching for <domain>.org A record at ns95.worldnic.com. [216.168.228.50]: 
> Got referral
> to F.ROOT-SERVERS.NET. [took 6 ms]
> Searching for <domain>.org A record at F.ROOT-SERVERS.NET. [192.5.5.241]: Got 
> referral to
> TLD1.ULTRADNS.NET. [took 54 ms]
> Searching for <domain>.org A record at TLD1.ULTRADNS.NET. [204.74.112.1]: Got 
> referral to
> ns95.worldnic.com. [took 3 ms]
> Searching for <domain>.org A record at ns95.worldnic.com. [216.168.228.50]: 
> Got referral
> to H.ROOT-SERVERS.NET. [took 5 ms]
> Searching for <domain>.org A record at H.ROOT-SERVERS.NET. [128.63.2.53]: Got 
> referral to
> TLD2.ULTRADNS.NET. [took 11 ms]
> Searching for <domain>.org A record at TLD2.ULTRADNS.NET. [204.74.113.1]: Got 
> referral to
> ns96.worldnic.com. [took 14 ms]

-- 
Barry Margolin, barmar at alum.mit.edu
Arlington, MA
*** PLEASE post questions in newsgroups, not directly to me ***