CF1761931539028-tsm20251029173950

WWW.RTSAK.COM - 21core.com

Search for IP or hostnames:

21core.com checked at 2025-10-31T17:25:38.848Z 1986ms 124/124/124 100% R:10

21core.com

NSns-310.awsdns-38.com
A2600:9000:5301:3600::1 🇺🇸 Amazon
PTRns-310.awsdns-38.com
A205.251.193.54🇺🇸 Amazon
PTRns-310.awsdns-38.com
NSns-577.awsdns-08.net
A2600:9000:5302:4100::1 🇺🇸 Amazon
PTRns-577.awsdns-08.net
A205.251.194.65🇺🇸 Amazon
PTRns-577.awsdns-08.net
NSns-1278.awsdns-31.org
A2600:9000:5304:fe00::1 🇺🇸 Amazon
PTRns-1278.awsdns-31.org
A205.251.196.254🇺🇸 Amazon
PTRns-1278.awsdns-31.org
NSns-1926.awsdns-48.co.uk
A2600:9000:5307:8600::1 🇺🇸 Amazon
PTRns-1926.awsdns-48.co.uk
A205.251.199.134🇺🇸 Amazon
PTRns-1926.awsdns-48.co.uk
MX21core-com.mail.protection.outlook.com
A2a01:111:f403:ca04::c 🇮🇪 Microsoft
PTRmail-db9pr02cu00204.inbound.protection.outlook.com
A2a01:111:f403:ca09::1 🇳🇱 Microsoft
PTRmail-as9pr07cu00301.inbound.protection.outlook.com
A2a01:111:f403:ca09::3 🇳🇱 Microsoft
PTRmail-am6pr04cu00303.inbound.protection.outlook.com
A2a01:111:f403:ca09::d 🇳🇱 Microsoft
PTRmail-as9pr05cu01305.inbound.protection.outlook.com
A52.101.68.0🇮🇪 Microsoft
PTRmail-db3pr0202cu00100.inbound.protection.outlook.com
A52.101.68.36🇮🇪 Microsoft
PTRmail-db5pr02cu00104.inbound.protection.outlook.com
A52.101.73.15🇳🇱 Microsoft
PTRmail-am9pr04cu00107.inbound.protection.outlook.com
A52.101.73.28🇳🇱 Microsoft
PTRmail-am7pr05cu00204.inbound.protection.outlook.com
A192.0.78.12🇺🇸 Automattic
A192.0.78.13🇺🇸 Automattic

com

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NSb.gtld-servers.net
NSc.gtld-servers.net
NSd.gtld-servers.net
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NSm.gtld-servers.net

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Starts with same word

Starts similarily

AI analysis

www.21core.com has 21core.com as its parent.

21core.com points to two IPs: 192.0.78.12 and 192.0.78.13.

Other host names, for instance xmlnews.org, lawrevision.state.ny.us, support.intensedebate.com, coop-access.fr and micheu.net share IP numbers with 21core.com.

21core.com is delegated to four name servers: ns-310.awsdns-38.com, ns-577.awsdns-08.net, ns-1278.awsdns-31.org and ns-1926.awsdns-48.co.uk.

21core.com at least partially shares name servers with other domains such as thirdbridge.ca, spartansfh.com, terrasafe-binat.com, dsre20gxxea06.cloudfront.net and multivers-software.nl.

These name servers are often used together with ns-633.awsdns-15.net, ns-1423.awsdns-49.org, ns-1214.awsdns-23.org, ns-679.awsdns-20.net, ns-697.awsdns-23.net, ns-764.awsdns-31.net, ns-1495.awsdns-58.org, ns-1885.awsdns-43.co.uk, ns-1824.awsdns-36.co.uk and ns-87.awsdns-10.com.

Host names with two IP numbers:

ns-310.awsdns-38.com points to 2600:9000:5301:3600::1 and 205.251.193.54

ns-577.awsdns-08.net points to 2600:9000:5302:4100::1 and 205.251.194.65

ns-1278.awsdns-31.org points to 2600:9000:5304:fe00::1 and 205.251.196.254

ns-1926.awsdns-48.co.uk points to 2600:9000:5307:8600::1 and 205.251.199.134

21core.com is handled by a single mail server, 21core-com.mail.protection.outlook.com.

21core-com.mail.protection.outlook.com points to eight IP numbers: 2a01:111:f403:ca04::c, 2a01:111:f403:ca09::1, 2a01:111:f403:ca09::3, 2a01:111:f403:ca09::d, 52.101.68.0, 52.101.68.36, 52.101.73.15 and 52.101.73.28.

Perform reverse DNS lookup as well as normal forward DNS. Check Autonomous System Numbers (ASNs) and BGP connections between Internet Service Providers.
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bGvdvgL CF johedugfp 2025-10-31