NSLIST.NET - mail.cogentco.com

Search for IP or hostnames:

mail.cogentco.com checked at 2025-10-18T01:45:54.263Z 784ms 56/56/56 100% R:8

`mail.cogentco.com`

NS	`auth1.dns.cogentco.com`
		A	2001:550:1:a::d ^{🇺🇸 Cogent Communications, Inc.}
			PTR	`auth1.dns.cogentco.com`
		A	66.28.0.14^{🇺🇸 Cogent Communications, Inc.}
			PTR	`auth1.dns.cogentco.com`
NS	`auth2.dns.cogentco.com`
		A	2001:550:1:b::d ^{🇺🇸 Cogent Communications, Inc.}
			PTR	`auth2.dns.cogentco.com`
		A	66.28.0.30^{🇺🇸 Cogent Communications, Inc.}
			PTR	`auth2.dns.cogentco.com`

`cogentco.com`

	NS	`auth1.dns.cogentco.com`
	NS	`auth2.dns.cogentco.com`
	MX	`cogentco-com.mail.protection.outlook.com`
	A	2001:550:1::cc01 ^{🇺🇸 Cogent Communications, Inc.}
	A	38.100.128.10^{🇩🇪 Cogent Communications, Inc.}

rank #84499 globally
rank #42356 in the tld

Up

backupmx1.mail.cogentco.com

relay.mail.cogentco.com

backupmx2.mail.cogentco.com

eu-backupmx1.mail.cogentco.com

eu-backupmx2.mail.cogentco.com

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AI analysis

mail.cogentco.com is a parent of backupmx1.mail.cogentco.com, relay.mail.cogentco.com, backupmx2.mail.cogentco.com, eu-backupmx1.mail.cogentco.com and eu-backupmx2.mail.cogentco.com.

mail.cogentco.com is delegated to two name servers: auth1.dns.cogentco.com and auth2.dns.cogentco.com.

mail.cogentco.com uses the same name server setup as other domains such as 196.56.154.in-addr.arpa, 123.125.38.in-addr.arpa, 193.70.198.in-addr.arpa, 136.89.38.in-addr.arpa and 146.140.38.in-addr.arpa.

mail.cogentco.com shares name servers with other domains at least partially, for example vcs.ups.com, 8.115.209.in-addr.arpa, schneider.com, ups.org and upsemail.com.

these name servers are commonly used with the name servers cbru.br.ns.els-gms.att.net, cmtu.mt.ns.els-gms.att.net, nsa.ups.com, nsb.ups.com, ns1.fnsi.net, ns2.fnsi.net, ns3.fnsi.net, auth0-eu.dns.cogentco.com and auth0-na.dns.cogentco.com.

Host names with two IP numbers:

auth1.dns.cogentco.com points to 2001:550:1:a::d and 66.28.0.14; auth2.dns.cogentco.com points to 2001:550:1:b::d and 66.28.0.30.

dbq