WWW.RTSAK.COM - 21.208.128.in-addr.arpa

Search for IP or hostnames:

21.208.128.in-addr.arpa checked at 2025-10-16T13:44:21.365Z 120ms 57/57/57 100% R:11

`21.208.128.in-addr.arpa`

NS	`holly.s.uw.edu`
		A	2607:4000:301:1::69 ^{🇺🇸 University of Washington (ASN 14221)}
			PTR	`holly.s.uw.edu`
		A	173.250.227.69^{🇺🇸 University of Washington (ASN 14221)}
			PTR	`holly.s.uw.edu`
NS	`hanna.cac.washington.edu`
		A	2607:4000:200:42::5 ^{🇺🇸 University of Washington}
			PTR	`hanna.s.uw.edu`
		A	140.142.5.5^{🇺🇸 University of Washington}
			PTR	`hanna.s.uw.edu`
NS	`marge.cac.washington.edu`
		A	2607:4000:200:43::13 ^{🇺🇸 University of Washington}
			PTR	`marge.cac.washington.edu`
		A	140.142.5.13^{🇺🇸 University of Washington}
			PTR	`marge.cac.washington.edu`

`208.128.in-addr.arpa`

	NS	`holly.s.uw.edu`
	NS	`hanna.cac.washington.edu`
	NS	`marge.cac.washington.edu`

Up

8.21.208.128.in-addr.arpa

Starts with same word

21.gg

21.capital

21.dk

21.email

21.sk

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.pw

21.org.cn

21.net

21.la

21.ag

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.gen.tr

21.ph

21.is

21.be

21.com.ua

21.pe

21.edu.ar

Starts similarily

21.web.app

21.su

21.network

21.si

21.gen.tr

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.ie

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

21.by

12.solutions

12.dyndns.tv

21.com.es

21.life

12.cm

21.run

21.pw

12.world

21.org.cn

12.by

21.net

12.org.ua

12.works

12.uz

21.la

21.ag

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

AI analysis

8.21.208.128.in-addr.arpa has 21.208.128.in-addr.arpa as its parent.

21.208.128.in-addr.arpa is delegated to name servers holly.s.uw.edu, hanna.cac.washington.edu and marge.cac.washington.edu.

21.208.128.in-addr.arpa at least partially shares name servers with other domains such as hr.yorku.ca, midwivesofseattle.com, 250.208.128.in-addr.arpa, oto.washington.edu and ilabs.washington.edu.

these name servers are commonly used alongside the name servers ns1.d-zone.ca, ns2.d-zone.ca, dns11.ipns.yorku.ca, dns21.ipns.yorku.ca and june.cs.washington.edu.

Host names with two IP numbers:

holly.s.uw.edu points to 2607:4000:301:1::69 and 173.250.227.69.

hanna.cac.washington.edu points to 2607:4000:200:42::5 and 140.142.5.5.

marge.cac.washington.edu points to 2607:4000:200:43::13 and 140.142.5.13.

dbq