Enter host name or IP address: 2 result(s) for 21.221.31.in-addr.arpa
namequery typeresultfirst seenlast seen
21.221.31.in-addr.arpa. NSauth1.exponential-e.net.
2014-10-07 15:35:052014-10-07 19:35:06
21.221.31.in-addr.arpa. NSauth0.exponential-e.net.
2014-10-07 15:35:052014-10-07 19:35:06

WHOIS info for: 21.221.31.in-addr.arpa

No whois server is known for this kind of object.