strange dns resolution (Score 1)

[sparrowhawk:~/Desktop] hawk% nslookup
Default Server: ns2.attbi.com
Address: 216.148.227.68

> 64.94.110.11
Server: ns2.attbi.com
Address: 216.148.227.68

Name: sitefinder-idn.verisign.com
Address: 64.94.110.11

> sitefinder.verisign.com
Server: ns2.attbi.com
Address: 216.148.227.68

Non-authoritative answer:
Name: sitefinder.verisign.com
Address: 12.158.80.10

if anyone can explain this, it would be appreciated...
clearly, under comcast DNS servers, 64.94.110.11 is slightly different, and the catch-all is 12.158.80.10