CF1764228805531-tsm20251126223807

MXLIST.NET - 203.21.72.in-addr.arpa

Search for IP or hostnames:

203.21.72.in-addr.arpa checked at 2025-11-27T07:33:25.513Z 292ms 61/61/61 100% R:12 allDone:true timedOut:false

203.21.72.in-addr.arpa

NSx1.amazonaws.com
A156.154.64.10🇺🇸 Neustar
PTRu1.amazonaws.com
NSx2.amazonaws.com
A156.154.65.10🇺🇸 Neustar
PTRu2.amazonaws.com
NSpdns1.ultradns.net
A2001:502:f3ff::1 🇺🇸 Neustar
PTRpdns1.ultradns.net
A204.74.108.1🇺🇸 Neustar
PTRpdns1.ultradns.net
NSx3.amazonaws.org
A156.154.150.1🇺🇸 AS399161
PTRdns-01.ultradns2.com
NSx4.amazonaws.org
A204.74.120.1🇺🇸 AS399160
PTRdns-01.ultradns2.org

21.72.in-addr.arpa

Up

207.203.21.72.in-addr.arpa
154.203.21.72.in-addr.arpa
159.203.21.72.in-addr.arpa
54.203.21.72.in-addr.arpa
33.203.21.72.in-addr.arpa
208.203.21.72.in-addr.arpa
53.203.21.72.in-addr.arpa
94.203.21.72.in-addr.arpa
89.203.21.72.in-addr.arpa

Starts with same word

203.bet
203.org
203.in
203.nu
203.fr
203.fi
203.ws
203.se
203.de
203.cc
203.com
203.events
203.pl
203.tel
203.cz
203.tv
203.me
203.ca
203.am
203.org.cn
203.one
203.it
203.eu
203.mobi
203.in-addr.arpa
203.ph

Starts similarily

023.bid
023.org
203.eu
320.co.uk
230.hu
320.cc
032.me
302.lt
203.mobi
302.ca
023.zone
203.in-addr.arpa
023.hr
320.co
320.org
230.net.cn
203.ph
230.ch
032.tel
302.tv
320.us
032.su
230.dental
032.org
203.bet
230.de
023.ch
032.app
032.pl
032.ru
032.org.uk
032.ua
302.directory
203.org
023.net
302.red
203.in
032.fr
023.life
230.bet
320.life
302.pl
023.us
203.nu
302.kim
032.com
203.fr
023.cm
230.com.ua
302.se
032.it
023.co.nz
302.cool
302.cc
023.chat
230.by
203.fi
023.ru
302.am
302.com
320.com
203.ws
302.in
203.se
023.info
203.de
023.design
230.pl
203.cc
302.im
032.am
320.dk
032.es
032.pp.ua
320.nl
032.xyz
230.one
302.org
230.org
230.net
302.cm
230.ru
302.zone
023.nl
023.link
032.cl
023.la
230.ro
032.kr
203.com
230.es
302.to
302.biz
230.mobi
302.technology
320.me
302.bet
203.events
230.co
230.co.il
032.de
023.by
230.us
230.com
302.is
023.jp
203.pl
023.rs
302.hu
230.la
023.cn
023.se
302.nl
023.ink
203.tel
203.cz
023.org.cn
032.io
320.de
320.ca
230.in-addr.arpa
230.ph
230.io
320.io
302.jp
023.fr
302.no
302.cl

AI analysis

203.21.72.in-addr.arpa has children including 207.203.21.72.in-addr.arpa, 154.203.21.72.in-addr.arpa, 159.203.21.72.in-addr.arpa, 54.203.21.72.in-addr.arpa, 33.203.21.72.in-addr.arpa and a few other host names.

203.21.72.in-addr.arpa is delegated to five name servers: x1.amazonaws.com, x2.amazonaws.com, pdns1.ultradns.net, x3.amazonaws.org and x4.amazonaws.org.

At least part of the name servers for 203.21.72.in-addr.arpa are shared with other domains, for instance cbmjournal.com, fluorcareers.co.uk, 249.240.54.in-addr.arpa, skylineenglish.net and kingsizedirect.at.

These name servers are commonly used alongside pdns5.ultradns.info, pdns3.ultradns.org, pdns2.ultradns.net, pdns4.ultradns.org, pdns6.ultradns.co.uk, dns1.p01.nsone.net, dns2.p01.nsone.net, dns3.p01.nsone.net and dns4.p01.nsone.net.

Host names with two IP numbers

pdns1.ultradns.net points to 2001:502:f3ff::1 and 204.74.108.1

Host names with one IP number

x1.amazonaws.com points to 156.154.64.10

x2.amazonaws.com points to 156.154.65.10

x3.amazonaws.org points to 156.154.150.1

x4.amazonaws.org points to 204.74.120.1