CF1760579651697-tsm20251015201252

NSLIST.NET - 21.173.in-addr.arpa

Search for IP or hostnames:

21.173.in-addr.arpa checked at 2025-10-16T01:54:11.671Z 138ms 64/64/64 100% R:13

21.173.in-addr.arpa

NSpdns104.ultradns.biz
A2610:a1:1015::8c 🇺🇸 Neustar
PTRpdns104.ultradns.biz
A156.154.66.104🇺🇸 Neustar
PTRpdns104.ultradns.biz
NSpdns104.ultradns.com
A2001:502:f3ff::8c 🇺🇸 Neustar
PTRpdns104.ultradns.com
A156.154.64.104🇺🇸 Neustar
PTRpdns104.ultradns.com
NSpdns104.ultradns.net
A2610:a1:1014::8c 🇺🇸 Neustar
PTRpdns104.ultradns.net
A156.154.65.104🇺🇸 Neustar
PTRpdns104.ultradns.net
NSpdns104.ultradns.org
A2001:502:4612::8c 🇺🇸 Neustar
PTRpdns104.ultradns.org
A156.154.67.104🇺🇸 Neustar
PTRpdns104.ultradns.org

173.in-addr.arpa

NSr.arin.net
NSu.arin.net
NSx.arin.net
NSy.arin.net
NSz.arin.net
NSarin.authdns.ripe.net

Starts with same word

Starts similarily

AI analysis

21.173.in-addr.arpa is delegated to four name servers: pdns104.ultradns.biz, pdns104.ultradns.com, pdns104.ultradns.net and pdns104.ultradns.org.

21.173.in-addr.arpa shares name servers with other domains at least partially, for example aibet7.com, stratostel.net, sugarmobile.eu, lookpo.com and 121.84.74.in-addr.arpa.

These name servers are commonly used with the name servers ns68.ultradns2.com and ns68.ultradns2.org.

Host names with two IP numbers:

pdns104.ultradns.biz points to: 2610:a1:1015::8c and 156.154.66.104

pdns104.ultradns.com points to: 2001:502:f3ff::8c and 156.154.64.104

pdns104.ultradns.net points to: 2610:a1:1014::8c and 156.154.65.104

pdns104.ultradns.org points to: 2001:502:4612::8c and 156.154.67.104

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

IeIrQNN CF johedugfp 2025-10-16