MXLIST.NET - rs21.io

Search for IP or hostnames:

rs21.io checked at 2025-11-26T23:52:29.149Z 257ms 116/116/116 100% R:14 allDone:true timedOut:false

`rs21.io`

NS	`ns-100.awsdns-12.com`
		A	2600:9000:5300:6400::1 ^{🇺🇸 Amazon}
			PTR	`ns-100.awsdns-12.com`
		A	205.251.192.100^{🇺🇸 Amazon}
			PTR	`ns-100.awsdns-12.com`
NS	`ns-655.awsdns-17.net`
		A	2600:9000:5302:8f00::1 ^{🇺🇸 Amazon}
			PTR	`ns-655.awsdns-17.net`
		A	205.251.194.143^{🇺🇸 Amazon}
			PTR	`ns-655.awsdns-17.net`
NS	`ns-1371.awsdns-43.org`
		A	2600:9000:5305:5b00::1 ^{🇺🇸 Amazon}
			PTR	`ns-1371.awsdns-43.org`
		A	205.251.197.91^{🇺🇸 Amazon}
			PTR	`ns-1371.awsdns-43.org`
NS	`ns-1539.awsdns-00.co.uk`
		A	2600:9000:5306:300::1 ^{🇺🇸 Amazon}
			PTR	`ns-1539.awsdns-00.co.uk`
		A	205.251.198.3^{🇺🇸 Amazon}
			PTR	`ns-1539.awsdns-00.co.uk`
MX	`rs21-io.mail.protection.outlook.com`
		A	2a01:111:f403:c801:: ^{🇺🇸 Microsoft}
			PTR	`mail-sa9pr02cu00200.inbound.protection.outlook.com`
		A	2a01:111:f403:f802:: ^{🇺🇸 Microsoft}
			PTR	`mail-byapr05cu00400.inbound.protection.outlook.com`
		A	2a01:111:f403:f908:: ^{🇺🇸 Microsoft}
			PTR	`mail-bn1pr21cu00100.inbound.protection.outlook.com`
		A	2a01:111:f403:f912:: ^{🇺🇸 Microsoft}
			PTR	`mail-cy5pr03cu00200.inbound.protection.outlook.com`
		A	52.101.9.5^{🇺🇸 Microsoft}
			PTR	`mail-mn2pr04cu00205.inbound.protection.outlook.com`
		A	52.101.9.14^{🇺🇸 Microsoft}
			PTR	`mail-bl0pr03cu00206.inbound.protection.outlook.com`
		A	52.101.10.1^{🇺🇸 Microsoft}
			PTR	`mail-bn6pr02cu00301.inbound.protection.outlook.com`
		A	52.101.194.17^{🇺🇸 Microsoft}
			PTR	`mail-ch5pr02cu00401.inbound.protection.outlook.com`
A	198.185.159.144^{🇺🇸 Squarespace-AS}

`io`

	NS	`a0.nic.io`
	NS	`a2.nic.io`
	NS	`b0.nic.io`
	NS	`c0.nic.io`

Starts with same word

rs21.cn

rs21.co.uk

rs21.io

rs21.com

rs21.org.uk

rs21.ru

rs21.net

Starts similarily

s12r.eu

2rs1.com

12sr.blue

sr12.com

sr21.de

s12r.de

s2r1.org

r12s.com

rs21.cn

rs12.com

rs21.co.uk

12rs.de

12sr.cc

rs21.io

rs21.com

rs21.org.uk

sr21.com

21rs.es

rs21.ru

rs21.net

12sr.net

12rs.com

sr21.co.jp

s12r.net

rs12.ru

2r1s.com

21sr.com

sr21.net

12sr.org

rs12.de

AI analysis

rs21.io points to IP number 198.185.159.144.

For instance, other host names ingeniousitsolutions.com, chirealestatebroker.com, octigers.com, breedekloofmakers.com and thegregsantos.com share IP numbers with rs21.io.

rs21.io is delegated to four name servers: ns-100.awsdns-12.com, ns-655.awsdns-17.net, ns-1371.awsdns-43.org and ns-1539.awsdns-00.co.uk.

rs21.io shares name servers with other domains at least partially, for example ovivowater.es, bathhousebait.com, viagener2020.com, d5q0be1ggj02z.cloudfront.net and gnpd.cn.

These name servers are often used together with the name servers ns-1697.awsdns-20.co.uk, ns-708.awsdns-24.net, ns-1444.awsdns-52.org, ns-14.awsdns-01.com and ns-1728.awsdns-24.co.uk.

Host names with two IP numbers:

ns-100.awsdns-12.com points to: 2600:9000:5300:6400::1 and 205.251.192.100

ns-655.awsdns-17.net points to: 2600:9000:5302:8f00::1 and 205.251.194.143

ns-1371.awsdns-43.org points to: 2600:9000:5305:5b00::1 and 205.251.197.91

ns-1539.awsdns-00.co.uk points to: 2600:9000:5306:300::1 and 205.251.198.3

rs21.io is handled by a single mail server, rs21-io.mail.protection.outlook.com.

Host name rs21-io.mail.protection.outlook.com points to eight IP numbers: 2a01:111:f403:c801::, 2a01:111:f403:f802::, 2a01:111:f403:f908::, 2a01:111:f403:f912::, 52.101.9.5, 52.101.9.14, 52.101.10.1 and 52.101.194.17.