DNSWHOIS.INFO - 172.21.129.in-addr.arpa

Search for IP or hostnames:

172.21.129.in-addr.arpa checked at 2025-10-20T21:24:17.609Z 137ms 57/57/57 100% R:12

`172.21.129.in-addr.arpa`

NS	`accuvax.northwestern.edu`
		A	2620:10d:2010:6011::100 ^{🇺🇸 Northwestern University}
		A	129.105.49.100^{🇺🇸 Northwestern University}
			PTR	`accuvax.northwestern.edu`
NS	`ns1a.rit.edu`
		A	2620:8d:8000:0:aba:ca:daba:ee ^{🇺🇸 Rochester Institute of Technology}
			PTR	`ns1a.rit.edu`
		A	129.21.1.82^{🇺🇸 Rochester Institute of Technology}
			PTR	`ns1a.rit.edu`
NS	`ns2a.rit.edu`
		A	2620:8d:8000:0:aba:ca:daba:ef ^{🇺🇸 Rochester Institute of Technology}
			PTR	`ns2a.rit.edu`
		A	129.21.1.92^{🇺🇸 Rochester Institute of Technology}
			PTR	`ns2a.rit.edu`

`21.129.in-addr.arpa`

	NS	`accuvax.northwestern.edu`
	NS	`ns1a.rit.edu`
	NS	`ns2a.rit.edu`

Up

160.172.21.129.in-addr.arpa

Starts with same word

172.la

172.nl

172.ch

172.fr

172.jp

172.org

172.in-addr.arpa

172.in

172.co

172.ph

172.ir

172.com

172.one

172.aero

172.de

172.us

172.it

172.tw

172.ca

172.zone

172.ws

172.net

172.hk

Starts similarily

721.tw

712.com.cn

271.nl

271.spb.ru

271.com

271.ch

127.ath.cx

217.cc

127.pictures

127.jp

271.us

217.waw.pl

271.se

721.org

721.in

721.com

721.ink

217.es

721.net

712.cz

712.com

217.ca

127.cz

271.de

127.de

127.com

721.info

217.ch

127.us

172.zone

127.co

271.eu

217.ws

127.ws

712.jpn.com

217.am

127.net

217.church

127.me

172.ws

712.ru

172.net

127.one

217.eu

271.cc

172.hk

127.hk

712.us

127.network

127.cn

712.at

217.com

127.no

721.pl

721.cz

271.ru

172.la

172.nl

271.in

721.tv

271.xyz

712.de

127.email

712.nl

172.ch

217.tv

127.dk

721.dk

271.com.cn

172.fr

172.jp

721.cc

217.be

271.ir

712.cc

217.cn

172.org

712.it

172.in-addr.arpa

127.cc

271.co

721.studio

172.in

217.co

127.ca

721.co

217.de

127.ch

712.net

721.me

127.ru

712.fr

127.sunnyday.jp

271.ca

217.in-addr.arpa

712.jp

217.dk

127.it

172.co

127.fi

127.fr

172.ph

217.jp

127.wtf

712.cn

172.ir

172.com

172.one

172.aero

172.de

712.run

217.in

712.es

127.la

127.at

271.ph

217.ru

172.us

217.net

127.xxx

172.it

721.ph

271.jp

127.mx

721.cn

721.de

217.fr

127.in-addr.arpa

721.ru

172.tw

217.at

127.run

712.eu

172.ca

127.io

127.ink

712.lt

AI analysis

172.21.129.in-addr.arpa is the parent of 160.172.21.129.in-addr.arpa.

172.21.129.in-addr.arpa delegates to three name servers: accuvax.northwestern.edu, ns1a.rit.edu and ns2a.rit.edu.

172.21.129.in-addr.arpa shares some name servers with other domains, for example 88.74.199.in-addr.arpa, linguistics.northwestern.edu, 103.21.129.in-addr.arpa, 254.205.128.in-addr.arpa and 181.21.129.in-addr.arpa.

These name servers are commonly used with cicada.northwestern.edu, dns01.buffalo.edu, dns02.buffalo.edu, dns03.buffalo.edu and dns04.buffalo.edu.

Host names with two IP numbers:

accuvax.northwestern.edu: 2620:10d:2010:6011::100 and 129.105.49.100

ns1a.rit.edu: 2620:8d:8000:0:aba:ca:daba:ee and 129.21.1.82

ns2a.rit.edu: 2620:8d:8000:0:aba:ca:daba:ef and 129.21.1.92

dbq