DNSWHOIS.INFO - 251.204.in-addr.arpa

Search for IP or hostnames:

251.204.in-addr.arpa checked at 2025-10-21T02:50:26.188Z 99ms 50/50/50 100% R:13

`251.204.in-addr.arpa`

NS	`auth1.dns.cogentco.com`
		A	2001:550:1:a::d ^{🇺🇸 Cogent Communications, Inc.}
			PTR	`auth1.dns.cogentco.com`
		A	66.28.0.14^{🇺🇸 Cogent Communications, Inc.}
			PTR	`auth1.dns.cogentco.com`
NS	`auth2.dns.cogentco.com`
		A	2001:550:1:b::d ^{🇺🇸 Cogent Communications, Inc.}
			PTR	`auth2.dns.cogentco.com`
		A	66.28.0.30^{🇺🇸 Cogent Communications, Inc.}
			PTR	`auth2.dns.cogentco.com`

`204.in-addr.arpa`

	NS	`r.arin.net`
	NS	`u.arin.net`
	NS	`x.arin.net`
	NS	`y.arin.net`
	NS	`z.arin.net`
	NS	`arin.authdns.ripe.net`

Up

32.251.204.in-addr.arpa

35.251.204.in-addr.arpa

33.251.204.in-addr.arpa

230.251.204.in-addr.arpa

34.251.204.in-addr.arpa

175.251.204.in-addr.arpa

Starts with same word

251.at

251.us

251.ca

251.de

251.ru

251.sh

251.nl

251.com.cn

251.ph

251.in

251.cz

251.cc

251.fr

251.eu

251.com

Starts similarily

521.cc

512.nl

512.it

521.gold

125.net

125.ru

152.tv

152.mobi

521.be

152.com.au

215.io

512.zone

125.vn

521.cn

512.cc

512.kz

125.in-addr.arpa

521.center

215.life

125.la

125.jp

512.net

125.at

152.io

251.sh

125.fr

251.nl

512.com.do

512.be

125.name

215.in-addr.arpa

251.com.cn

125.de

125.com

521.at

512.bike

512.biz

215.cn

125.nyc

152.co.il

251.ph

251.in

152.tel

125.ir

512.fr

215.pl

125.pl

512.ch

512.consulting

215.fr

512.solar

125.ovh

125.cc

521.co

251.cz

512.vin

125.tel

251.cc

125.be

521.it

125.cz

152.in

251.fr

521.moe

215.eu

125.in

215.tel

215.be

215.tech

152.jp

521.design

215.ir

251.eu

521.in

251.com

215.fi

125.dk

521.run

512.com.tw

521.me

215.de

152.nl

512.eu

125.nu

512.am

512.in

152.eu

512.hu

152.uk

512.group

125.cn

215.marketing

521.dk

152.cn

251.at

152.info

125.group

521.eu

125.tv

512.cz

AI analysis

251.204.in-addr.arpa is a parent of 32.251.204.in-addr.arpa, 35.251.204.in-addr.arpa, 33.251.204.in-addr.arpa, 230.251.204.in-addr.arpa, 34.251.204.in-addr.arpa and a few other host names.

Two name servers auth1.dns.cogentco.com and auth2.dns.cogentco.com handle the delegation for 251.204.in-addr.arpa.

251.204.in-addr.arpa shares the same name server setup as other domains, for example 70.28.66.in-addr.arpa, 148.88.38.in-addr.arpa, blankrome.com, 225.100.38.in-addr.arpa and texpool.net.

251.204.in-addr.arpa at least partially shares name servers with other domains, for example postsecondaryresearch.org, facil.columbia.edu, 224.183.206.in-addr.arpa, 214.138.192.in-addr.arpa and canadianhealthinfoway.com.

These name servers are often used with the following name servers: ns1.fnsi.net, ns2.fnsi.net, ns3.fnsi.net, ns1.infoway-inforoute.ca, ns2.infoway-inforoute.ca, ext-ns1.columbia.edu, auth4.dns.cogentco.com and auth5.dns.cogentco.com.

Host names with two IP numbers:

auth1.dns.cogentco.com points to 2001:550:1:a::d and 66.28.0.14.

auth2.dns.cogentco.com points to 2001:550:1:b::d and 66.28.0.30.

dbq