DNSWHOIS.INFO - 21.136.193.in-addr.arpa

Search for IP or hostnames:

21.136.193.in-addr.arpa checked at 2025-09-10T05:26:32.457Z 565ms 67/67/67 100% R:17

`21.136.193.in-addr.arpa`

NS	`ns02.fccn.pt`
		A	2001:690:a80:4001::200 ^{🇵🇹 FCCN - Fundacao para a Computacao Cientifica Nacional}
			PTR	`ns02.fccn.pt`
		A	193.136.2.228^{🇵🇹 FCCN - Fundacao para a Computacao Cientifica Nacional}
			PTR	`ns02.fccn.pt`
NS	`dns2.uminho.pt`
		A	2001:690:2280:801::145 ^{🇵🇹 FCCN - Fundacao para a Computacao Cientifica Nacional}
			PTR	`dns2.uminho.pt`
		A	193.137.16.145^{🇵🇹 FCCN - Fundacao para a Computacao Cientifica Nacional}
			PTR	`dns2.uminho.pt`
NS	`dns3.uminho.pt`
		A	2001:690:2280:1::65 ^{🇵🇹 FCCN - Fundacao para a Computacao Cientifica Nacional}
			PTR	`dns3.uminho.pt`
		A	193.137.16.65^{🇵🇹 FCCN - Fundacao para a Computacao Cientifica Nacional}
			PTR	`dns3.uminho.pt`
NS	`dns.uminho.pt`
		A	2001:690:2280:1::75 ^{🇵🇹 FCCN - Fundacao para a Computacao Cientifica Nacional}
			PTR	`dns.uminho.pt`
		A	193.137.16.75^{🇵🇹 FCCN - Fundacao para a Computacao Cientifica Nacional}
			PTR	`dns.uminho.pt`

`136.193.in-addr.arpa`

	NS	`ns01.fccn.pt`
	NS	`ns02.fccn.pt`
	NS	`ns03.fccn.pt`

Up
`103.21.136.193.in-addr.arpa`
`118.21.136.193.in-addr.arpa`
`45.21.136.193.in-addr.arpa`
`53.21.136.193.in-addr.arpa`
`131.21.136.193.in-addr.arpa`
`123.21.136.193.in-addr.arpa`
`50.21.136.193.in-addr.arpa`

Starts with same word
`21.diamonds`
`21.cn`
`21.de`
`21.training`
`21.ca`
`21.construction`
`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`
`21.by`
`21.com.es`
`21.life`
`21.run`
`21.net`
`21.la`
`21.ag`

Starts similarily
`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`
`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`
`12.world`
`12.by`
`21.net`
`12.org.ua`
`12.works`

AI analysis

The parent of host names 103.21.136.193.in-addr.arpa, 118.21.136.193.in-addr.arpa, 45.21.136.193.in-addr.arpa, 53.21.136.193.in-addr.arpa, 131.21.136.193.in-addr.arpa, and a few others is 21.136.193.in-addr.arpa.

Four name servers, ns02.fccn.pt, dns2.uminho.pt, dns3.uminho.pt, and dns.uminho.pt, are delegated to 21.136.193.in-addr.arpa.

Name servers of 21.136.193.in-addr.arpa are at least partially shared with other domains such as cedup.up.pt, inpi.pt, adb.uminho.pt, dps.uminho.pt, and zappiens.pt.

The name servers ns03.fccn.pt, ns01.fccn.pt, marco.uminho.pt, ns1.up.pt, ns2.up.pt, ns3.up.pt, ns4.up.pt, ns.min-financas.pt, ns3.min-educ.pt, and ns4.min-educ.pt are frequently used in tandem.

ns02.fccn.pt, dns2.uminho.pt, dns3.uminho.pt, and dns.uminho.pt each point to two IP numbers respectively: 2001:690:a80:4001::200, 193.136.2.228; 2001:690:2280:801::145, 193.137.16.145; 2001:690:2280:1::65, 193.137.16.65; 2001:690:2280:1::75, 193.137.16.75.

dbq