WWW.RTSAK.COM - check21.com

Search for IP or hostnames:

check21.com checked at 2025-10-22T03:18:02.783Z 247ms 116/116/116 100% R:11

`check21.com`

NS	`ns1-05.azure-dns.com`
		A	2603:1061:0:700::5 ^{🇺🇸 Microsoft}
			PTR	`ns1-05.azure-dns.com`
		A	13.107.236.5^{🇺🇸 Microsoft}
			PTR	`ns1-05.azure-dns.com`
NS	`ns4-05.azure-dns.info`
		A	2620:1ec:bda:700::5 ^{🇺🇸 Microsoft}
			PTR	`ns4-05.azure-dns.info`
		A	208.84.5.5^{🇺🇸 Microsoft}
			PTR	`ns4-05.azure-dns.info`
NS	`ns2-05.azure-dns.net`
		A	2620:1ec:8ec:700::5 ^{🇺🇸 Microsoft}
			PTR	`ns2-05.azure-dns.net`
		A	150.171.21.5^{🇺🇸 Microsoft}
			PTR	`ns2-05.azure-dns.net`
NS	`ns3-05.azure-dns.org`
		A	2a01:111:4000:700::5 ^{🇬🇧 Microsoft}
			PTR	`ns3-05.azure-dns.org`
		A	204.14.183.5^{🇺🇸 Microsoft}
			PTR	`ns3-05.azure-dns.org`
MX	`check21-com.mail.protection.outlook.com`
		A	2a01:111:f403:c903::1 ^{🇺🇸 Microsoft}
			PTR	`mail-mw2pr02cu00301.inbound.protection.outlook.com`
		A	2a01:111:f403:c946::5 ^{🇺🇸 Microsoft}
			PTR	`mail-ch4pr21cu00105.inbound.protection.outlook.com`
		A	2a01:111:f403:f802::1 ^{🇺🇸 Microsoft}
			PTR	`mail-sj2pr05cu00101.inbound.protection.outlook.com`
		A	2a01:111:f403:f807::1 ^{🇺🇸 Microsoft}
			PTR	`mail-co1pr21cu00101.inbound.protection.outlook.com`
		A	52.101.9.17^{🇺🇸 Microsoft}
		A	52.101.10.16^{🇺🇸 Microsoft}
			PTR	`mail-bn6pr21cu00500.inbound.protection.outlook.com`
		A	52.101.11.7^{🇺🇸 Microsoft}
			PTR	`mail-sa9pr04cu00107.inbound.protection.outlook.com`
		A	52.101.194.15^{🇺🇸 Microsoft}
			PTR	`mail-ch4pr21cu00107.inbound.protection.outlook.com`
A	40.121.56.180^{🇺🇸 Microsoft}

www.check21.com

check21.online

check21.de

check21.wiki

check21.org

check21.com

check21.biz

check21.online

21check.com

check12.de

check21.de

check12.com

12check.eu

12check.de

check21.wiki

check21.org

check21.com

12check.com

check21.biz

The parent of www.check21.com is check21.com.

check21.com points to a single IP address: 40.121.56.180.

Other host names, for instance www.check21.com, share IP numbers with check21.com.

check21.com at least partially shares name servers with other domains, for example microsoftpartnerserverandcloud.com, asicompanystores.com, beurer.com, 179.99.204.in-addr.arpa and tide.com.

Host names with two IP numbers:

ns1-05.azure-dns.com points to: 2603:1061:0:700::5 and 13.107.236.5

ns4-05.azure-dns.info points to: 2620:1ec:bda:700::5 and 208.84.5.5

ns2-05.azure-dns.net points to: 2620:1ec:8ec:700::5 and 150.171.21.5

ns3-05.azure-dns.org points to: 2a01:111:4000:700::5 and 204.14.183.5

check21-com.mail.protection.outlook.com points to eight IP numbers: 2a01:111:f403:c903::1, 2a01:111:f403:c946::5, 2a01:111:f403:f802::1, 2a01:111:f403:f807::1, 52.101.9.17, 52.101.10.16, 52.101.11.7 and 52.101.194.15.

dbq