CF1759829139290-tsm20251005211530

IPLIST.NET - 21.5.149.in-addr.arpa

Search for IP or hostnames:

21.5.149.in-addr.arpa checked at 2025-10-07T09:25:39.180Z 756ms 50/50/50 100% R:9

21.5.149.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

5.149.in-addr.arpa

NSauth1.dns.cogentco.com
NSauth2.dns.cogentco.com

Up

Starts with same word

Starts similarily

AI analysis

21.5.149.in-addr.arpa is a parent of 147.21.5.149.in-addr.arpa, 253.21.5.149.in-addr.arpa, 155.21.5.149.in-addr.arpa and 150.21.5.149.in-addr.arpa.

21.5.149.in-addr.arpa's delegation uses two name servers: auth1.dns.cogentco.com and auth2.dns.cogentco.com.

21.5.149.in-addr.arpa uses the same name server setup as other domains, such as dca08.atlas.cogentco.com, 147.100.38.in-addr.arpa, 69.72.38.in-addr.arpa, theolinstudio.com and 19.103.38.in-addr.arpa.

21.5.149.in-addr.arpa at least partially shares name servers with other domains, including despoorwegenwervenaan.be, 20.132.66.in-addr.arpa, bandcampberlin.de, upsonline.com.au and ups.hu.

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

Host names with two IPs:

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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IxJzGEl CF johedugfp 2025-10-07