IPLIST.NET - 251.138.in-addr.arpa

Search for IP or hostnames:

251.138.in-addr.arpa checked at 2025-10-04T11:40:28.457Z 177ms 77/77/77 100% R:12

`251.138.in-addr.arpa`

NS	`ns4.ja.net`
		A	2001:630:0:47::42 ^{🇬🇧 Janet}
			PTR	`ns4.ja.net`
		A	193.62.157.66^{🇬🇧 Janet}
			PTR	`ns4.ja.net`
NS	`ns1.st-and.ac.uk`
		A	2001:630:140:1000::1:35 ^{🇬🇧 Janet}
			PTR	`ns1.st-and.ac.uk`
		A	138.251.10.65^{🇬🇧 Janet}
			PTR	`ns1.st-and.ac.uk`
NS	`ns2.st-and.ac.uk`
		A	2001:630:140:1001::2:35 ^{🇬🇧 Janet}
			PTR	`ns2.st-and.ac.uk`
		A	138.251.10.97^{🇬🇧 Janet}
			PTR	`ns2.st-and.ac.uk`
NS	`ns3.st-and.ac.uk`
		A	2001:630:140:1000::3:35 ^{🇬🇧 Janet}
			PTR	`ns3.st-and.ac.uk`
		A	138.251.10.82^{🇬🇧 Janet}
			PTR	`ns3.st-and.ac.uk`
NS	`ns4.st-and.ac.uk`
		A	2001:630:140:1001::4:35 ^{🇬🇧 Janet}
			PTR	`ns4.st-and.ac.uk`
		A	138.251.10.114^{🇬🇧 Janet}
			PTR	`ns4.st-and.ac.uk`

`138.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

16.251.138.in-addr.arpa

20.251.138.in-addr.arpa

22.251.138.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

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

521.shopping

125.us

521.net

512.se

251.us

512.ca

512.sk

152.at

125.co

512.la

152.de

215.es

521.de

512.com

521.fr

215.nl

215.dk

125.info

152.ph

125.hk

152.la

125.ca

512.one

251.ca

215.co

215.net

512.de

215.co.jp

512.red

125.se

512.email

215.it

215.ca

152.in-addr.arpa

521.ca

215.us

215.pw

512.dk

152.com

251.de

512.io

152.pl

215.ru

521.one

521.com

215.la

152.org

521.jp

521.plus

512.pizza

125.es

125.ge

512.ink

152.fr

215.info

125.eu

251.ru

521.cafe

152.us

125.ch

512.tokyo

152.life

521.ru

152.be

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

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

AI analysis

251.138.in-addr.arpa is a parent of 16.251.138.in-addr.arpa, 20.251.138.in-addr.arpa and 22.251.138.in-addr.arpa.

251.138.in-addr.arpa delegates to five name servers: ns4.ja.net, ns1.st-and.ac.uk, ns2.st-and.ac.uk, ns3.st-and.ac.uk and ns4.st-and.ac.uk.

251.138.in-addr.arpa at least partially shares name servers with other domains such as 36.134.in-addr.arpa, 210.61.193.in-addr.arpa, irc.brad.ac.uk, research.londonmet.ac.uk and ipv6.ja.net.

These name servers are often used together with ns2.ja.net, ns3.ja.net, ns0.ja.net, ns1.ja.net, dns0.brad.ac.uk, dns1.brad.ac.uk, ns0.londonmet.ac.uk, ns2.londonmet.ac.uk, jamba.gcal.ac.uk and phoenix.gcal.ac.uk.

Two IPs per host name:

ns4.ja.net points to: 2001:630:0:47::42 and 193.62.157.66

ns1.st-and.ac.uk points to: 2001:630:140:1000::1:35 and 138.251.10.65

ns2.st-and.ac.uk points to: 2001:630:140:1001::2:35 and 138.251.10.97

ns3.st-and.ac.uk points to: 2001:630:140:1000::3:35 and 138.251.10.82

ns4.st-and.ac.uk points to: 2001:630:140:1001::4:35 and 138.251.10.114

Pattern: left IDs ascend by 9 (12, 21, 30, 39, 48); each pair of targets ascend by 9 (15/18, 24/27, 33/36, 42/45, 51/54)

dbq