IPLIST.NET - 51.21.216.in-addr.arpa
Search for IP or hostnames:
51.21.216.in-addr.arpa checked at 2025-10-05T09:09:03.647Z 219ms 42/42/42 100% R:1351.21.216.in-addr.arpa
| NS | ns1.firstcomm.com | ||||||
| A | 208.40.1.6🇺🇸 First Communications | ||||||
| PTR | ns1.firstcomm.com | ||||||
| NS | ns2.firstcomm.com | ||||||
| A | 168.92.1.6🇺🇸 RoadRunner | ||||||
| PTR | ns2.firstcomm.com | ||||||
21.216.in-addr.arpa
Up
146.51.21.216.in-addr.arpa |
Starts with same word
Starts similarily
AI analysis
51.21.216.in-addr.arpa is a parent of 146.51.21.216.in-addr.arpa.
Delegation for 51.21.216.in-addr.arpa rests with two name servers, ns1.firstcomm.com and ns2.firstcomm.com.
51.21.216.in-addr.arpa shares the same name server setup as other domains, including 160.244.66.in-addr.arpa, 92.206.67.in-addr.arpa, 37.222.74.in-addr.arpa, 77.146.216.in-addr.arpa and 192.7.69.in-addr.arpa.
51.21.216.in-addr.arpa at least partially shares name servers with other domains, for instance 223.7.69.in-addr.arpa, 219.7.69.in-addr.arpa, 213.7.69.in-addr.arpa, 100.93.168.in-addr.arpa and 209.7.69.in-addr.arpa.
These name servers are often used together with ns3.cimcoisp.net, ns4.cimcoisp.net, ns1.interacs.net, ns2.interacs.net and ns3.interacs.net.
Host names with one IP number: ns1.firstcomm.com points to 208.40.1.6; ns2.firstcomm.com points to 168.92.1.6.