WWW.RTSAK.COM - 21.100.138.in-addr.arpa

Search for IP or hostnames:

21.100.138.in-addr.arpa checked at 2025-10-05T15:26:28.810Z 540ms 49/49/49 100% R:22

`21.100.138.in-addr.arpa`

NS	`galileo.ccupm.upm.es`
		A	2001:720:41c:40:12:100:4:4 ^{🇪🇸 RedIRIS/Red.es}
			PTR	`galileo.ccupm.upm.es`
		A	138.100.4.4^{🇪🇸 RedIRIS/Red.es}
			PTR	`galileo.ccupm.upm.es`
NS	`dir.etsit.upm.es`
		A	138.100.17.10^{🇪🇸 RedIRIS/Red.es}
			PTR	`dir.etsit.upm.es`
			PTR	`selfie.etsit.upm.es`
NS	`dns.etsit.upm.es`
		A	138.100.17.4^{🇪🇸 RedIRIS/Red.es}
			PTR	`dns.etsit.upm.es`

`100.138.in-addr.arpa`

	NS	`chico.rediris.es`
	NS	`sun.rediris.es`
	NS	`einstein.ccupm.upm.es`
	NS	`galileo.ccupm.upm.es`

Up

99.21.100.138.in-addr.arpa

149.21.100.138.in-addr.arpa

69.21.100.138.in-addr.arpa

180.21.100.138.in-addr.arpa

142.21.100.138.in-addr.arpa

134.21.100.138.in-addr.arpa

147.21.100.138.in-addr.arpa

137.21.100.138.in-addr.arpa

136.21.100.138.in-addr.arpa

181.21.100.138.in-addr.arpa

138.21.100.138.in-addr.arpa

172.21.100.138.in-addr.arpa

2.21.100.138.in-addr.arpa

129.21.100.138.in-addr.arpa

156.21.100.138.in-addr.arpa

253.21.100.138.in-addr.arpa

190.21.100.138.in-addr.arpa

132.21.100.138.in-addr.arpa

143.21.100.138.in-addr.arpa

139.21.100.138.in-addr.arpa

141.21.100.138.in-addr.arpa

77.21.100.138.in-addr.arpa

254.21.100.138.in-addr.arpa

185.21.100.138.in-addr.arpa

53.21.100.138.in-addr.arpa

133.21.100.138.in-addr.arpa

140.21.100.138.in-addr.arpa

Starts with same word

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

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

Starts similarily

12.si

21.partners

21.to

21.ie

21.photos

21.cc

12.be

12.fi

12.cc

12.is

21.fr

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

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

AI analysis

21.100.138.in-addr.arpa has children including 99.21.100.138.in-addr.arpa, 149.21.100.138.in-addr.arpa, 69.21.100.138.in-addr.arpa, 180.21.100.138.in-addr.arpa, 142.21.100.138.in-addr.arpa and a few other host names.

21.100.138.in-addr.arpa is delegated to three name servers: galileo.ccupm.upm.es, dir.etsit.upm.es and dns.etsit.upm.es.

At least part of the name servers for 21.100.138.in-addr.arpa are shared with other domains, for instance cbgp.upm.es, dia.fi.upm.es, ma.upm.es, 67.100.138.in-addr.arpa and etsia.upm.es.

these name servers are commonly used with the name servers einstein.ccupm.upm.es, dns2.dit.upm.es, dns.dit.upm.es, glo.etsit.upm.es, isp1.etsit.upm.es, chita.fi.upm.es, ns.fi.upm.es, tarzan.fi.upm.es, zape.fi.upm.es and kite.topografia.upm.es.

Two IP numbers for a host name:

galileo.ccupm.upm.es points to 2001:720:41c:40:12:100:4:4 and 138.100.4.4.

One IP number for a host name:

dir.etsit.upm.es points to 138.100.17.10.

dns.etsit.upm.es points to 138.100.17.4.

dbq