IPLIST.NET - atcoder.info

Search for IP or hostnames:

atcoder.info checked at 2025-09-13T10:32:45.737Z 801ms 102/102/102 100% R:10

`atcoder.info`

NS	`ns-102.awsdns-12.com`
		A	2600:9000:5300:6600::1 ^{🇺🇸 Amazon}
			PTR	`ns-102.awsdns-12.com`
		A	205.251.192.102^{🇺🇸 Amazon}
			PTR	`ns-102.awsdns-12.com`
NS	`ns-786.awsdns-34.net`
		A	2600:9000:5303:1200::1 ^{🇺🇸 Amazon}
			PTR	`ns-786.awsdns-34.net`
		A	205.251.195.18^{🇺🇸 Amazon}
			PTR	`ns-786.awsdns-34.net`
NS	`ns-1360.awsdns-42.org`
		A	2600:9000:5305:5000::1 ^{🇺🇸 Amazon}
			PTR	`ns-1360.awsdns-42.org`
		A	205.251.197.80^{🇺🇸 Amazon}
			PTR	`ns-1360.awsdns-42.org`
MX	`inbound-smtp.us-east-1.amazonaws.com`
		A	3.211.210.226^{🇺🇸 Amazon}
			PTR	`ec2-3-211-210-226.compute-1.amazonaws.com`
		A	44.206.9.87^{🇺🇸 Amazon}
			PTR	`ec2-44-206-9-87.compute-1.amazonaws.com`
		A	44.210.166.32^{🇺🇸 Amazon}
			PTR	`ec2-44-210-166-32.compute-1.amazonaws.com`
		A	54.164.173.191^{🇺🇸 Amazon}
			PTR	`ec2-54-164-173-191.compute-1.amazonaws.com`
		A	54.197.5.236^{🇺🇸 Amazon}
			PTR	`ec2-54-197-5-236.compute-1.amazonaws.com`
NS	`ns-1661.awsdns-15.co.uk`
		A	2600:9000:5306:7d00::1 ^{🇺🇸 Amazon}
			PTR	`ns-1661.awsdns-15.co.uk`
		A	205.251.198.125^{🇺🇸 Amazon}
			PTR	`ns-1661.awsdns-15.co.uk`

`info`

	NS	`a0.info.afilias-nst.info`
	NS	`a2.info.afilias-nst.info`
	NS	`c0.info.afilias-nst.info`
	NS	`b0.info.afilias-nst.org`
	NS	`b2.info.afilias-nst.org`
	NS	`d0.info.afilias-nst.org`

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AI analysis

Four name servers, ns-102.awsdns-12.com, ns-786.awsdns-34.net, ns-1360.awsdns-42.org, and ns-1661.awsdns-15.co.uk, are delegated to atcoder.info.

Name servers of atcoder.info are at least partially shared with other domains such as 219.136.200.in-addr.arpa, bobcat.com, expressimage.digital, ptest.facet.it.ucla.edu, and lotco.de.

The name servers ns-94.awsdns-11.com, ns-552.awsdns-05.net, ns-1961.awsdns-53.co.uk, ns-1476.awsdns-56.org, ns-883.awsdns-46.net, ns-1510.awsdns-60.org, ns-810.awsdns-37.net, ns-237.awsdns-29.com, ns-897.awsdns-48.net, and ns-1734.awsdns-24.co.uk are frequently used in tandem.

ns-102.awsdns-12.com, ns-786.awsdns-34.net, ns-1360.awsdns-42.org, and ns-1661.awsdns-15.co.uk each point to two IP numbers respectively: 2600:9000:5300:6600::1, 205.251.192.102; 2600:9000:5303:1200::1, 205.251.195.18; 2600:9000:5305:5000::1, 205.251.197.80; 2600:9000:5306:7d00::1, 205.251.198.125.

The mail server, inbound-smtp.us-east-1.amazonaws.com, handles atcoder.info.

The mail server setup of atcoder.info is identical to that of other domains such as fidstudio.slack.com, prelib.ca, mongoeat.slack.com, coinovy.com, and kubisinteractive.slack.com.

Other domains such as goodbet.com, z-api.io, digitalpill.atlassian.net, ddswireless.atlassian.net, and dcsbrasil.com share at least some mail servers with atcoder.info.

The mail servers inbound-smtp.us-west-2.amazonaws.com, aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com, alt3.aspmx.l.google.com, and alt4.aspmx.l.google.com are frequently utilized in conjunction.

The DNS record inbound-smtp.us-east-1.amazonaws.com resolves to the following IP addresses: 3.211.210.226, 44.206.9.87, 44.210.166.32, 54.164.173.191, and 54.197.5.236.

dbq