DNSWHOIS.INFO - 21.252.128.in-addr.arpa

Search for IP or hostnames:

21.252.128.in-addr.arpa checked at 2025-10-26T11:40:20.398Z 119ms 74/74/74 100% R:12

`21.252.128.in-addr.arpa`

NS	`ns00.ip.wustl.edu`
		A	2604:3e00:0:1::1 ^{🇺🇸 WUSTL}
			PTR	`ns00.ip.wustl.edu`
		A	128.252.0.1^{🇺🇸 WUSTL}
			PTR	`ns00.ip.wustl.edu`
NS	`ns01.ip.wustl.edu`
		A	2604:3e00:0:2::1 ^{🇺🇸 WUSTL}
			PTR	`ns01.ip.wustl.edu`
		A	128.252.0.9^{🇺🇸 WUSTL}
			PTR	`ns01.ip.wustl.edu`
NS	`ns02.ip.wustl.edu`
		A	2604:3e00:0:3::1 ^{🇺🇸 WUSTL}
			PTR	`ns02.ip.wustl.edu`
		A	128.252.0.17^{🇺🇸 WUSTL}
			PTR	`ns02.ip.wustl.edu`
NS	`ns03.ip.wustl.edu`
		A	2604:3e00:0:4::1 ^{🇺🇸 WUSTL}
			PTR	`ns03.ip.wustl.edu`
		A	128.252.0.25^{🇺🇸 WUSTL}
			PTR	`ns03.ip.wustl.edu`
NS	`ns04.ip.wustl.edu`
		A	2600:1f14:6fa:5400:3132:67f0:63c6:948c ^{🇺🇸 Amazon}
		A	52.27.32.241^{🇺🇸 Amazon}
			PTR	`ec2-52-27-32-241.us-west-2.compute.amazonaws.com`

`252.128.in-addr.arpa`

	NS	`ns00.ip.wustl.edu`
	NS	`ns01.ip.wustl.edu`
	NS	`ns02.ip.wustl.edu`
	NS	`ns03.ip.wustl.edu`
	NS	`ns04.ip.wustl.edu`

Up

131.21.252.128.in-addr.arpa

108.21.252.128.in-addr.arpa

110.21.252.128.in-addr.arpa

87.21.252.128.in-addr.arpa

86.21.252.128.in-addr.arpa

85.21.252.128.in-addr.arpa

Starts with same word

21.immo

21.cz

21.style

21.nl

21.agency

21.co

21.biz

21.lv

21.ru

21.co.za

21.finance

21.ax

21.nu

21.business

21.casino

21.pl

21.ee

21.tv

21.partners

21.to

21.ie

21.photos

21.cc

21.fr

21.by

21.com.es

21.life

21.run

21.org.cn

21.net

21.la

21.diamonds

21.cn

21.de

21.training

21.ca

21.org

21.co.uk

21.vc

21.am

21.rs

21.com

21.bet

21.center

21.kz

21.web.app

21.su

21.network

21.si

21.ph

21.is

21.be

21.com.ua

21.pe

21.edu.ar

21.gg

21.capital

21.dk

21.email

21.sk

Starts similarily

21.by

12.solutions

12.dyndns.tv

21.com.es

21.life

12.cm

21.run

12.world

21.org.cn

12.by

21.net

12.org.ua

12.works

12.uz

21.la

21.diamonds

21.cn

21.de

21.training

12.com

21.ca

12.ca

21.org

12.sh.cn

12.ru

21.co.uk

12.limo

21.vc

21.am

12.biz

21.rs

12.to

21.com

12.net

12.la

21.bet

12.at

21.center

21.kz

12.ws

12.s3.amazonaws.com

21.web.app

21.su

21.network

21.si

21.ph

12.lv

21.is

21.be

21.com.ua

12.cl

12.ph

12.ma

12.rs

21.pe

21.edu.ar

21.gg

21.capital

12.de

12.in-addr.arpa

21.dk

12.ag

21.email

12.kz

12.com.ua

21.sk

12.cz

21.immo

12.eu

21.cz

12.uk

12.life

21.style

12.city

12.dk

21.nl

21.agency

12.org.ru

12.nu

21.co

21.biz

21.lv

21.ru

21.co.za

12.ai

21.finance

12.hk

21.ax

12.amsterdam

12.fr

21.nu

21.business

12.vc

21.casino

21.pl

21.ee

12.am

12.agency

12.digital

12.ac.cn

12.lt

21.tv

12.si

21.partners

21.to

21.ie

21.photos

21.cc

12.be

12.fi

12.cc

12.is

21.fr

12.chat

AI analysis

21.252.128.in-addr.arpa is a parent of 131.21.252.128.in-addr.arpa, 108.21.252.128.in-addr.arpa, 110.21.252.128.in-addr.arpa, 87.21.252.128.in-addr.arpa, 86.21.252.128.in-addr.arpa and a few other host names.

21.252.128.in-addr.arpa is delegated to five name servers: ns00.ip.wustl.edu, ns01.ip.wustl.edu, ns02.ip.wustl.edu, ns03.ip.wustl.edu and ns04.ip.wustl.edu.

21.252.128.in-addr.arpa at least partially shares name servers with other domains, for example washu.tw, washu.de, 146.252.128.in-addr.arpa, 117.254.65.in-addr.arpa and wusm-pcf.wustl.edu.

Host names with two IP numbers

Each host name points to two IP numbers:

ns00.ip.wustl.edu points to 2604:3e00:0:1::1 and 128.252.0.1

ns01.ip.wustl.edu points to 2604:3e00:0:2::1 and 128.252.0.9

ns02.ip.wustl.edu points to 2604:3e00:0:3::1 and 128.252.0.17

ns03.ip.wustl.edu points to 2604:3e00:0:4::1 and 128.252.0.25

ns04.ip.wustl.edu points to 2600:1f14:6fa:5400:3132:67f0:63c6:948c and 52.27.32.241

dbq