can't see nameserver externally

Chris Thompson cet1 at
Tue Dec 9 16:18:32 UTC 2008

On Dec 9 2008, Davenport, Steve M wrote:

>I noticed that one of our nameservers is no longer responding with the
>correct address externally. The server is and is
>listed as a server in the registration record for The address
>should be but a dig/nslookup from an external site returns
> We do not have in any of the zone files, but
>this address is the external address of a broadband service manager in
>our network. Using dig/nslookup on the local network verifies that
> is not in the zone files or cache of our nameservers. The
>name and address of our ns-2 resolve correctly internally. Can someone
>please tell me how to identify and correct this problem.

It's probably coming from the glue at the GTLD nameservers:

$ dig +norec +nostats +nocmd
;; Got answer:
;; ->>HEADER<<- opcode: QUERY, status: NOERROR, id: 346
;; flags: qr; QUERY: 1, ANSWER: 0, AUTHORITY: 2, ADDITIONAL: 2

;            IN      A

;; AUTHORITY SECTION:              172800  IN      NS              172800  IN      NS

;; ADDITIONAL SECTION:    172800  IN      A    172800  IN      A

Try fixing your registration there.

Chris Thompson
Email: cet1 at

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