IPLIST.NET - 203.21.72.in-addr.arpa

Search for IP or hostnames:

203.21.72.in-addr.arpa checked at 2025-10-22T09:20:27.717Z 203ms 61/61/61 100% R:15

`203.21.72.in-addr.arpa`

NS	`x1.amazonaws.com`
		A	156.154.64.10^{🇺🇸 Neustar}
			PTR	`u1.amazonaws.com`
NS	`x2.amazonaws.com`
		A	156.154.65.10^{🇺🇸 Neustar}
			PTR	`u2.amazonaws.com`
NS	`pdns1.ultradns.net`
		A	2001:502:f3ff::1 ^{🇺🇸 Neustar}
			PTR	`pdns1.ultradns.net`
		A	204.74.108.1^{🇺🇸 Neustar}
			PTR	`pdns1.ultradns.net`
NS	`x3.amazonaws.org`
		A	156.154.150.1^{🇺🇸 AS399161}
			PTR	`dns-01.ultradns2.com`
NS	`x4.amazonaws.org`
		A	204.74.120.1^{🇺🇸 AS399160}
			PTR	`dns-01.ultradns2.org`

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.ws

203.se

203.de

203.cc

203.com

203.pl

203.tel

203.cz

203.tv

203.me

203.ca

203.am

203.one

203.it

203.eu

203.in-addr.arpa

203.ph

Starts similarily

023.bid

023.org

203.eu

320.co.uk

230.hu

320.cc

302.lt

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

032.app

032.pl

032.ru

032.org.uk

032.ua

203.org

302.red

203.in

032.fr

230.bet

320.life

302.pl

023.us

203.nu

032.com

203.fr

023.cm

230.com.ua

032.it

023.co.nz

302.cool

302.cc

023.chat

230.by

023.ru

302.am

302.com

320.com

203.ws

302.in

203.se

023.info

032.uk

203.de

023.design

230.pl

203.cc

302.im

032.am

320.dk

032.es

032.pp.ua

320.nl

032.tv

032.xyz

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

302.technology

320.me

230.co

230.co.il

032.de

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

320.pl

023.org.cn

032.io

320.de

320.ca

230.in-addr.arpa

230.ph

023.fr

302.no

302.cl

203.tv

023.cc

302.de

302.io

023.city

320.ru

230.tv

203.me

203.ca

203.am

023.com

302.at

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, pdns6.ultradns.co.uk, pdns2.ultradns.net, pdns4.ultradns.org, 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

dbq