CF1762623830250-tsm20251105200708

IPLIST.NET - 121.177.216.in-addr.arpa

Search for IP or hostnames:

121.177.216.in-addr.arpa checked at 2025-11-08T17:43:50.234Z 253ms 47/47/47 100% R:14

121.177.216.in-addr.arpa

NSauth1.dns.cogentco.com
A2001:550:1:a::d 🇺🇸 Cogent Communications, Inc.
PTRauth1.dns.cogentco.com
A66.28.0.14🇺🇸 Cogent Communications, Inc.
PTRauth1.dns.cogentco.com
NSauth2.dns.cogentco.com
A2001:550:1:b::d 🇺🇸 Cogent Communications, Inc.
PTRauth2.dns.cogentco.com
A66.28.0.30🇺🇸 Cogent Communications, Inc.
PTRauth2.dns.cogentco.com

177.216.in-addr.arpa

Starts with same word

Starts similarily

AI analysis

Delegation for 121.177.216.in-addr.arpa rests with two name servers, auth1.dns.cogentco.com and auth2.dns.cogentco.com.

121.177.216.in-addr.arpa shares the same name server setup as other domains, including 242.167.63.in-addr.arpa, 216.3.206.in-addr.arpa, dial.cogentco.com, 255.101.38.in-addr.arpa and 64.202.38.in-addr.arpa.

121.177.216.in-addr.arpa at least partially shares name servers with other domains, for instance deutschlandfunk.de, schneidernational.com, 239.41.209.in-addr.arpa, infrabel.be and ups.my.

These name servers are commonly used together with cbru.br.ns.els-gms.att.net, cmtu.mt.ns.els-gms.att.net, ns1.fnsi.net, ns2.fnsi.net, ns3.fnsi.net, nsa.ups.com, nsb.ups.com, ns1.vodafone-ip.de and ns2.vodafone-ip.de.

Host names with two IP numbers: auth1.dns.cogentco.com points to 2001:550:1:a::d and 66.28.0.14; auth2.dns.cogentco.com points to 2001:550:1:b::d and 66.28.0.30.

Perform reverse DNS lookup as well as normal forward DNS. Check Autonomous System Numbers (ASNs) and BGP connections between Internet Service Providers.
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