WWW.RTSAK.COM - 81.cz

Search for IP or hostnames:

81.cz checked at 2025-09-06T09:28:49.336Z 604ms 156/156/156 100% R:15

`81.cz`

NS	`crystal.ns.cloudflare.com`
		A	2606:4700:50::a29f:26ca ^{🇺🇸 Cloudflare}
			PTR	`crystal.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c2ca ^{🇨🇷 Cloudflare}
			PTR	`crystal.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:22ca ^{🇺🇸 Cloudflare}
			PTR	`crystal.ns.cloudflare.com`
		A	108.162.194.202^{🇺🇸 Cloudflare}
			PTR	`crystal.ns.cloudflare.com`
		A	162.159.38.202^Cloudflare
			PTR	`crystal.ns.cloudflare.com`
		A	172.64.34.202^{🇺🇸 Cloudflare}
			PTR	`crystal.ns.cloudflare.com`
NS	`seth.ns.cloudflare.com`
		A	2606:4700:58::adf5:3b8e ^{🇺🇸 Cloudflare}
			PTR	`seth.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c18e ^{🇨🇷 Cloudflare}
			PTR	`seth.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:218e ^{🇺🇸 Cloudflare}
			PTR	`seth.ns.cloudflare.com`
		A	108.162.193.142^{🇺🇸 Cloudflare}
			PTR	`seth.ns.cloudflare.com`
		A	172.64.33.142^{🇺🇸 Cloudflare}
			PTR	`seth.ns.cloudflare.com`
		A	173.245.59.142^{🇺🇸 Cloudflare}
			PTR	`seth.ns.cloudflare.com`
MX	`81-cz.mail.protection.outlook.com`
		A	2a01:111:f403:ca04::4 ^{🇮🇪 Microsoft}
			PTR	`mail-db4pr02cu00204.inbound.protection.outlook.com`
		A	2a01:111:f403:ca04::5 ^{🇮🇪 Microsoft}
			PTR	`mail-db3pr0202cu00205.inbound.protection.outlook.com`
		A	2a01:111:f403:ca04::10 ^{🇮🇪 Microsoft}
			PTR	`mail-dbapr03cu00100.inbound.protection.outlook.com`
		A	2a01:111:f403:ca09::3 ^{🇳🇱 Microsoft}
			PTR	`mail-am6pr04cu00303.inbound.protection.outlook.com`
		A	52.101.68.0^{🇮🇪 Microsoft}
			PTR	`mail-db3pr0202cu00100.inbound.protection.outlook.com`
		A	52.101.68.8^{🇮🇪 Microsoft}
			PTR	`mail-du0pr03cu00100.inbound.protection.outlook.com`
		A	52.101.68.39^{🇮🇪 Microsoft}
			PTR	`mail-db7pr03cu00607.inbound.protection.outlook.com`
		A	52.101.73.16^{🇳🇱 Microsoft}
			PTR	`mail-as2pr05cu00100.inbound.protection.outlook.com`
A	2606:4700:20::681a:6d7 ^{🇺🇸 Cloudflare}
A	2606:4700:20::681a:7d7 ^{🇺🇸 Cloudflare}
A	2606:4700:20::ac43:44c3 ^{🇺🇸 Cloudflare}
A	104.26.6.215^Cloudflare
A	104.26.7.215^Cloudflare
A	172.67.68.195^{🇺🇸 Cloudflare}

`cz`

	NS	`a.ns.nic.cz`
	NS	`b.ns.nic.cz`
	NS	`c.ns.nic.cz`
	NS	`d.ns.nic.cz`

Starts with same word
`81.to`
`81.cool`
`81.plus`
`81.de`
`81.waw.pl`
`81.biz`
`81.chat`
`81.me`
`81.gs`
`81.cz`
`81.ph`
`81.lt`
`81.pl`
`81.ws`
`81.fyi`
`81.nu`
`81.ca`
`81.com.hk`
`81.cx`
`81.amsterdam`
`81.cn`
`81.cl`
`81.com`
`81.sk`
`81.su`
`81.co.uk`
`81.la`
`81.world`
`81.hk`
`81.se`
`81.cm`
`81.fr`
`81.cc`
`81.be`
`81.in-addr.arpa`

Starts similarily
`18.lt`
`18.app`
`18.tel`
`18.cool`
`18.uz`
`18.in-addr.arpa`
`81.ws`
`18.lc`
`18.gs`
`18.githubusercontent.com`
`81.fyi`
`81.nu`
`18.world`
`81.ca`
`81.com.hk`
`18.ph`
`18.watch`
`81.cx`
`18.com.cn`
`18.ca`
`18.ws`
`18.network`
`18.com.tw`
`18.com.pl`
`81.amsterdam`
`18.com.tr`
`18.amsterdam`
`81.cn`
`18.chat`
`18.dk`
`18.tech`
`81.cl`
`18.digital`
`18.ms`
`81.com`
`18.money`
`81.sk`
`18.show`
`18.cz`
`81.su`
`18.wtf`
`18.com.hk`
`18.nl`
`18.vip`
`81.co.uk`
`81.la`
`18.net.au`
`81.world`
`81.hk`
`81.se`
`18.fi`
`18.tv`
`81.cm`
`18.pe`
`18.rs`
`18.cn`
`81.fr`
`18.hu`
`18.hk`
`18.pl`
`81.cc`
`18.cl`
`81.be`
`81.in-addr.arpa`
`18.dating`
`18.md`
`81.to`
`18.org`
`81.cool`
`18.fr`
`18.com`
`18.sk`
`81.plus`
`18.group`
`81.de`
`81.waw.pl`
`18.plus`
`81.biz`
`81.chat`
`81.me`
`18.kz`
`81.gs`
`18.gen.tr`
`18.tl`
`81.cz`
`81.ph`
`81.lt`
`18.eu`
`18.de`
`81.pl`

AI analysis

The DNS record 81.cz resolves to the following six IP addresses: 2606:4700:20::681a:6d7, 2606:4700:20::681a:7d7, 2606:4700:20::ac43:44c3, 104.26.6.215, 104.26.7.215, and 172.67.68.195.

IP numbers are shared between 81.cz and other host names, such as 100andchange.org, www.visualbook.ca, www.centralbank.cw, drone-hacks.com, and www.irisconnect.com.

Two name servers, crystal.ns.cloudflare.com and seth.ns.cloudflare.com, are assigned the delegation of 81.cz.

Other domains, such as instagram.za.com, thamesdiamondjubileepageant.org, wavegen.co.uk, sphaera.world, and ykien.net, share the same name server setup as 81.cz.

The domain 81.cz shares name servers, at least partially, with other domains such as achhe.cl, partikelfalle.de, zhslfood.com, trustgreat.com, and lvcshu.com.

The name servers thaddeus.ns.cloudflare.com are frequently utilized in combination with these name servers.

crystal.ns.cloudflare.com and seth.ns.cloudflare.com each point to six IP numbers: 2606:4700:50::a29f:26ca, 2803:f800:50::6ca2:c2ca, 2a06:98c1:50::ac40:22ca, 108.162.194.202, 162.159.38.202, and 172.64.34.202 for crystal.ns.cloudflare.com, and 2606:4700:58::adf5:3b8e, 2803:f800:50::6ca2:c18e, 2a06:98c1:50::ac40:218e, 108.162.193.142, 172.64.33.142, and 173.245.59.142 for seth.ns.cloudflare.com.

The mail server, 81-cz.mail.protection.outlook.com, handles 81.cz.

81-cz.mail.protection.outlook.com is configured to point to eight IP numbers: 2a01:111:f403:ca04::4, 2a01:111:f403:ca04::5, 2a01:111:f403:ca04::10, 2a01:111:f403:ca09::3, 52.101.68.0, 52.101.68.8, 52.101.68.39, and 52.101.73.16.

dbq