Sounds like an evil hacker is already doing DNS spoofing & DNS posioning, hmm, not good. Only joking.
Heres my two cents. Have you tried retrieving any of the various DNS records? AS,A,PTR,HINFO
Have you tried a simple *WHOIS* query on the IP address to see 'who' it belongs to? (besides dns lookup) Also, check out the site http://www.robtex.com/
run the IP address through there.
Again, just my two cents.