Enter host name or IP address: 2 result(s) for 21.23.17.154.in-addr.arpa
namequery typeresultfirst seenlast seen
21.23.17.154.in-addr.arpa. PTRhost-by.DMIT.IO.
2021-10-11 18:38:362021-10-11 18:38:36
21.23.17.154.in-addr.arpa. PTRundefined.hostname.localhost.
2021-10-12 13:40:192021-10-13 03:40:01

WHOIS info for: 21.23.17.154.in-addr.arpa 

No whois server is known for this kind of object.