WWW.RTSAK.COM - courtesy.io

Search for IP or hostnames:

courtesy.io checked at 2025-10-24T05:08:18.753Z 164ms 75/75/75 100% R:13

`courtesy.io`

NS	`ns-111.awsdns-13.com`
		A	2600:9000:5300:6f00::1 ^{🇺🇸 Amazon}
			PTR	`ns-111.awsdns-13.com`
		A	205.251.192.111^{🇺🇸 Amazon}
			PTR	`ns-111.awsdns-13.com`
NS	`ns-586.awsdns-09.net`
		A	2600:9000:5302:4a00::1 ^{🇺🇸 Amazon}
			PTR	`ns-586.awsdns-09.net`
		A	205.251.194.74^{🇺🇸 Amazon}
			PTR	`ns-586.awsdns-09.net`
NS	`ns-1445.awsdns-52.org`
		A	2600:9000:5305:a500::1 ^{🇺🇸 Amazon}
			PTR	`ns-1445.awsdns-52.org`
		A	205.251.197.165^{🇺🇸 Amazon}
			PTR	`ns-1445.awsdns-52.org`
NS	`ns-1587.awsdns-06.co.uk`
		A	2600:9000:5306:3300::1 ^{🇺🇸 Amazon}
			PTR	`ns-1587.awsdns-06.co.uk`
		A	205.251.198.51^{🇺🇸 Amazon}
			PTR	`ns-1587.awsdns-06.co.uk`
A	3.17.159.37^{🇺🇸 Amazon}
		PTR	`ec2-3-17-159-37.us-east-2.compute.amazonaws.com`

`io`

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

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AI analysis

courtesy.io resolves to a single IP: 3.17.159.37.

Other host names share IP numbers with courtesy.io; for instance ec2-3-17-159-37.us-east-2.compute.amazonaws.com.

courtesy.io is delegated to four name servers: ns-111.awsdns-13.com, ns-586.awsdns-09.net, ns-1445.awsdns-52.org and ns-1587.awsdns-06.co.uk.

courtesy.io shares some name servers with other domains, for example activeapis.com, what3words.com, fabis.co, myfabius.jp and oyster.it.

These name servers are commonly used with the name servers ns-407.awsdns-50.com, ns-1496.awsdns-59.org, ns-1185.awsdns-20.org, ns-1592.awsdns-07.co.uk, ns-639.awsdns-15.net and ns-1576.awsdns-05.co.uk.

Host names with two IP numbers

Two IPs per host:

ns-111.awsdns-13.com points to 2600:9000:5300:6f00::1 and 205.251.192.111

ns-586.awsdns-09.net points to 2600:9000:5302:4a00::1 and 205.251.194.74

ns-1445.awsdns-52.org points to 2600:9000:5305:a500::1 and 205.251.197.165

ns-1587.awsdns-06.co.uk points to 2600:9000:5306:3300::1 and 205.251.198.51

dbq