IPLIST.NET - atcoder.biz

Search for IP or hostnames:

atcoder.biz checked at 2025-09-13T22:39:30.522Z 105ms 64/64/64 100% R:14

`atcoder.biz`

NS	`ns-165.awsdns-20.com`
		A	2600:9000:5300:a500::1 ^{🇺🇸 Amazon}
			PTR	`ns-165.awsdns-20.com`
		A	205.251.192.165^{🇺🇸 Amazon}
			PTR	`ns-165.awsdns-20.com`
NS	`ns-525.awsdns-01.net`
		A	2600:9000:5302:d00::1 ^{🇺🇸 Amazon}
			PTR	`ns-525.awsdns-01.net`
		A	205.251.194.13^{🇺🇸 Amazon}
			PTR	`ns-525.awsdns-01.net`
NS	`ns-1030.awsdns-00.org`
		A	2600:9000:5304:600::1 ^{🇺🇸 Amazon}
			PTR	`ns-1030.awsdns-00.org`
		A	205.251.196.6^{🇺🇸 Amazon}
			PTR	`ns-1030.awsdns-00.org`
NS	`ns-1641.awsdns-13.co.uk`
		A	2600:9000:5306:6900::1 ^{🇺🇸 Amazon}
			PTR	`ns-1641.awsdns-13.co.uk`
		A	205.251.198.105^{🇺🇸 Amazon}
			PTR	`ns-1641.awsdns-13.co.uk`

`biz`

	NS	`a.gtld.biz`
	NS	`b.gtld.biz`
	NS	`c.gtld.biz`
	NS	`m.gtld.biz`
	NS	`n.gtld.biz`
	NS	`w.gtld.biz`
	NS	`x.gtld.biz`
	NS	`y.gtld.biz`

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AI analysis

Four name servers, ns-165.awsdns-20.com, ns-525.awsdns-01.net, ns-1030.awsdns-00.org, and ns-1641.awsdns-13.co.uk, are delegated to atcoder.biz.

Name servers of atcoder.biz are at least partially shared with other domains such as zero-spec.com, forcesuk.com, thethirdsource.org, eurosport.lt, and rentalsolutions.it.

The name servers ns-277.awsdns-34.com, ns-673.awsdns-20.net, ns-1246.awsdns-27.org, ns-356.awsdns-44.com, ns-930.awsdns-52.net, ns-1761.awsdns-28.co.uk, ns-1217.awsdns-24.org, ns-375.awsdns-46.com, ns-1017.awsdns-63.net, and ns-1739.awsdns-25.co.uk are frequently used in tandem.

ns-165.awsdns-20.com, ns-525.awsdns-01.net, ns-1030.awsdns-00.org, and ns-1641.awsdns-13.co.uk each point to two IP numbers respectively: 2600:9000:5300:a500::1, 205.251.192.165; 2600:9000:5302:d00::1, 205.251.194.13; 2600:9000:5304:600::1, 205.251.196.6; 2600:9000:5306:6900::1, 205.251.198.105.

dbq