Enter host name or IP address: 2 result(s) for 153.221.83.in-addr.arpa
namequery typeresultfirst seenlast seen
153.221.83.in-addr.arpa. NSauthns2.ngdc.net.
2015-07-13 15:15:362015-07-13 19:15:36
153.221.83.in-addr.arpa. NSauthns1.ngdc.net.
2015-07-13 15:15:362015-07-13 19:15:36

WHOIS info for: 153.221.83.in-addr.arpa

No whois server is known for this kind of object.