MXLIST.NET - blah.boulder.co.us

Search for IP or hostnames:

blah.boulder.co.us checked at 2025-10-19T16:31:54.324Z 163ms 86/86/86 100% R:14

`blah.boulder.co.us`

MX	`ns-1.csn.net`
		A	63.150.72.4^{🇺🇸 Lumen AS209}
			PTR	`authns1.centurylink.net`
			PTR	`authns1.qwest.net`
			PTR	`authns1.lumen.tech`
NS	`authns1.qwest.net`
		A	2001:428::5 ^{🇺🇸 Lumen AS209}
			PTR	`authns1.qwest.net`
		A	63.150.72.4^{🇺🇸 Lumen AS209}
			PTR	`authns1.centurylink.net`
			PTR	`authns1.qwest.net`
			PTR	`authns1.lumen.tech`
NS	`authns2.qwest.net`
		A	2001:428::6 ^{🇺🇸 Lumen AS209}
			PTR	`authns2.qwest.net`
		A	208.44.130.120^{🇺🇸 Lumen AS209}
			PTR	`authns2.centurylink.net`
			PTR	`authns2.qwest.net`
			PTR	`authns2.lumen.tech`
MX	`blah.boulder.co.us`
		A	204.132.123.53^{🇺🇸 Lumen AS209}
A	204.132.123.53^{🇺🇸 Lumen AS209}

`boulder.co.us`

	NS	`ns1.localitymanagement.us`
	NS	`ns2.localitymanagement.us`
	NS	`ns3.localitymanagement.us`
	NS	`ns4.localitymanagement.us`

rank #73377 globally
rank #239 in the tld

MX for

blah.boulder.co.us

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AI analysis

The mail server for blah.boulder.co.us is blah.boulder.co.us.

ns-1.csn.net is a mail server commonly used with blah.boulder.co.us.

blah.boulder.co.us points to a single IP address: 204.132.123.53.

Two name servers authns1.qwest.net and authns2.qwest.net handle the delegation for blah.boulder.co.us.

blah.boulder.co.us shares the same name server setup as other domains, for example 197.102.65.in-addr.arpa, 71.124.65.in-addr.arpa, 162.225.63.in-addr.arpa, 14.216.71.in-addr.arpa and lindenoakshospital.net.

blah.boulder.co.us shares name servers with other domains to some extent, including akamai.centurylinkservices.net, ironkey.gd, 183.231.216.in-addr.arpa and mie-site.org.

These name servers are often used together with dns-auth-1.centurylinkservices.net and dns-auth-2.centurylinkservices.net.

Host names with two IP numbers:

authns1.qwest.net points to 2001:428::5 and 63.150.72.4.

authns2.qwest.net points to 2001:428::6 and 208.44.130.120.

blah.boulder.co.us is handled by two mail servers: ns-1.csn.net and blah.boulder.co.us.

blah.boulder.co.us shares at least some mail servers with other domains, for instance lescom.denver.co.us, evolutiongame.com and isis.colorado-springs.co.us.

These mail servers are often used with mx01.discovery.com and mx02.discovery.com.

Host names with one IP number:

ns-1.csn.net points to 63.150.72.4; blah.boulder.co.us points to 204.132.123.53.

dbq