can't see nameserver externally

[Larry]

Davenport, Steve M wrote:
> Hello,
>  
> I noticed that one of our nameservers is no longer responding with the 
> correct address externally. The server is  ns-2.hosp.utmck.edu and is 
> listed as a server in the registration record for utmck.edu. The address 
> should be 165.6.6.27 but a dig/nslookup from an external site returns 
> 165.6.144.1. We do not have 165.6.144.1 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 
> 165.6.144.1 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.

Have you checked the IP registered for the NS?



ns-2.hosp.utmck.edu.    172800  IN      A       165.6.144.1
utmck.edu.              172800  IN      NS      harley.mc.utmck.edu.
utmck.edu.              172800  IN      NS      ns-2.hosp.utmck.edu.
;; Received 123 bytes from 192.31.80.30#53(D.GTLD-SERVERS.NET) in 27 ms




dig -tA ns-2.hosp.utmck.edu +trace

; <<>> DiG 9.2.4 <<>> -tA ns-2.hosp.utmck.edu +trace
;; global options:  printcmd
.                       444765  IN      NS      F.ROOT-SERVERS.NET.
.                       444765  IN      NS      G.ROOT-SERVERS.NET.
.                       444765  IN      NS      H.ROOT-SERVERS.NET.
.                       444765  IN      NS      I.ROOT-SERVERS.NET.
.                       444765  IN      NS      J.ROOT-SERVERS.NET.
.                       444765  IN      NS      K.ROOT-SERVERS.NET.
.                       444765  IN      NS      L.ROOT-SERVERS.NET.
.                       444765  IN      NS      M.ROOT-SERVERS.NET.
.                       444765  IN      NS      A.ROOT-SERVERS.NET.
.                       444765  IN      NS      B.ROOT-SERVERS.NET.
.                       444765  IN      NS      C.ROOT-SERVERS.NET.
.                       444765  IN      NS      D.ROOT-SERVERS.NET.
.                       444765  IN      NS      E.ROOT-SERVERS.NET.
;; Received 500 bytes from 67.19.0.10#53(67.19.0.10) in 1 ms

edu.                    172800  IN      NS      D.GTLD-SERVERS.NET.
edu.                    172800  IN      NS      L.GTLD-SERVERS.NET.
edu.                    172800  IN      NS      G.GTLD-SERVERS.NET.
edu.                    172800  IN      NS      F.GTLD-SERVERS.NET.
edu.                    172800  IN      NS      A.GTLD-SERVERS.NET.
edu.                    172800  IN      NS      C.GTLD-SERVERS.NET.
edu.                    172800  IN      NS      E.GTLD-SERVERS.NET.
;; Received 305 bytes from 192.5.5.241#53(F.ROOT-SERVERS.NET) in 48 ms

ns-2.hosp.utmck.edu.    172800  IN      A       165.6.144.1
utmck.edu.              172800  IN      NS      harley.mc.utmck.edu.
utmck.edu.              172800  IN      NS      ns-2.hosp.utmck.edu.
;; Received 123 bytes from 192.31.80.30#53(D.GTLD-SERVERS.NET) in 27 ms