WWW.RTSAK.COM - sipa.columbia.edu

Search for IP or hostnames:

sipa.columbia.edu checked at 2025-11-22T12:09:49.969Z 958ms 145/145/145 100% R:19 allDone:true timedOut:false

`sipa.columbia.edu`

NS	`ext-ns1.columbia.edu`
		A	2001:18d8::35 ^{🇺🇸 Columbia University}
			PTR	`ext-ns1.columbia.edu`
		A	2001:18d8:1::1:1 ^{🇺🇸 Columbia University}
			PTR	`ext-ns1.columbia.edu`
		A	128.59.1.1^{🇺🇸 Columbia University}
			PTR	`ext-ns1.columbia.edu`
NS	`auth1.dns.cogentco.com`
		A	2001:550:1:a::d ^{🇺🇸 COGENT}
			PTR	`auth1.dns.cogentco.com`
		A	66.28.0.14^{🇺🇸 COGENT}
			PTR	`auth1.dns.cogentco.com`
NS	`auth2.dns.cogentco.com`
		A	2001:550:1:b::d ^{🇺🇸 COGENT}
			PTR	`auth2.dns.cogentco.com`
		A	66.28.0.30^{🇺🇸 COGENT}
			PTR	`auth2.dns.cogentco.com`
NS	`auth4.dns.cogentco.com`
		A	2001:978:1:a::d ^{🇺🇸 COGENT}
			PTR	`auth4.dns.cogentco.com`
		A	80.245.32.74^{🇺🇸 COGENT}
			PTR	`auth4.dns.cogentco.com`
NS	`auth5.dns.cogentco.com`
		A	2001:978:1:b::d ^{🇺🇸 COGENT}
			PTR	`auth5.dns.cogentco.com`
		A	80.91.64.50^{🇪🇸 COGENT}
			PTR	`auth5.dns.cogentco.com`
MX	`sipa-columbia-edu.mail.protection.outlook.com`
		A	2a01:111:f403:c92c::2 ^{🇺🇸 Microsoft}
			PTR	`mail-dm2pr04cu00102.inbound.protection.outlook.com`
		A	2a01:111:f403:c946::6 ^{🇺🇸 Microsoft}
			PTR	`mail-ch5pr02cu00406.inbound.protection.outlook.com`
		A	2a01:111:f403:f901::2 ^{🇺🇸 Microsoft}
			PTR	`mail-bl2pr02cu00402.inbound.protection.outlook.com`
		A	2a01:111:f403:f902::2 ^{🇺🇸 Microsoft}
			PTR	`mail-mn2pr02cu00202.inbound.protection.outlook.com`
		A	52.101.8.51^{🇺🇸 Microsoft}
			PTR	`mail-dm1pr04cu00203.inbound.protection.outlook.com`
		A	52.101.11.2^{🇺🇸 Microsoft}
			PTR	`mail-sn1pr03cu00102.inbound.protection.outlook.com`
		A	52.101.11.19^{🇺🇸 Microsoft}
			PTR	`mail-sa9pr04cu00203.inbound.protection.outlook.com`
		A	52.101.42.6^{🇺🇸 Microsoft}
			PTR	`mail-mw2pr02cu00306.inbound.protection.outlook.com`
A	162.159.128.65^Cloudflare
A	162.159.138.64^Cloudflare

`columbia.edu`

	NS	`ext-ns1.columbia.edu`
	NS	`auth1.dns.cogentco.com`
	NS	`auth2.dns.cogentco.com`
	NS	`auth4.dns.cogentco.com`
	NS	`auth5.dns.cogentco.com`
	MX	`mxa-00364e01.gslb.pphosted.com`
	MX	`mxb-00364e01.gslb.pphosted.com`
	NS	`ns1.lse.ac.uk`
	A	162.159.128.65^Cloudflare
	A	162.159.138.64^Cloudflare

rank #271 globally
rank #9 in the tld
This domain name "columbia.edu" is associated with Columbia University, a private Ivy League research university located in New York City. It is used for the university's main website, email addresses, and various online services related to the institution. The ".edu" extension indicates that the domain is primarily used for educational institutions.

Up

sipac.sipa.columbia.edu

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AI analysis

sipa.columbia.edu is a parent of sipac.sipa.columbia.edu, cu.sipa.columbia.edu, lemannfellows.sipa.columbia.edu, sipa-labs-hp16.sipa.columbia.edu and sipadc1.sipa.columbia.edu.

sipa.columbia.edu resolves to two IP numbers: 162.159.128.65 and 162.159.138.64.

other host names including professorsemeritus.columbia.edu.cdn.cloudflare.net, business.columbia.edu.cdn.cloudflare.net, www.communityimpact.columbia.edu.cdn.cloudflare.net, www.pulitzer.org.cdn.cloudflare.net and workplacecenter.columbia.edu.cdn.cloudflare.net share IP numbers with sipa.columbia.edu.

sipa.columbia.edu is delegated to five name servers: ext-ns1.columbia.edu, auth1.dns.cogentco.com, auth2.dns.cogentco.com, auth4.dns.cogentco.com and auth5.dns.cogentco.com.

sipa.columbia.edu at least partially shares name servers with other domains, for instance 217.5.149.in-addr.arpa, upsbrown.info, 251.2.199.in-addr.arpa, 16.105.38.in-addr.arpa and 127.149.in-addr.arpa.

These name servers are commonly used with the following name servers: ext-ns2.columbia.edu, acme.ucc.cuny.edu, lavinia.cis.cuny.edu, ns1.nyp.org, ns2.nyp.org, ns10.customer.level3.net, ns15.customer.level3.net, apollo.cs.columbia.edu, diana.cs.columbia.edu and sundog.ee.columbia.edu.

Host names with three IP numbers:

ext-ns1.columbia.edu points to: 2001:18d8::35, 2001:18d8:1::1:1 and 128.59.1.1.

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.

auth4.dns.cogentco.com points to: 2001:978:1:a::d and 80.245.32.74.

auth5.dns.cogentco.com points to: 2001:978:1:b::d and 80.91.64.50.

sipa.columbia.edu is handled by a single mail server, sipa-columbia-edu.mail.protection.outlook.com.

Host sipa-columbia-edu.mail.protection.outlook.com points to eight IP numbers: 2a01:111:f403:c92c::2, 2a01:111:f403:c946::6, 2a01:111:f403:f901::2, 2a01:111:f403:f902::2, 52.101.8.51, 52.101.11.2, 52.101.11.19 and 52.101.42.6.

dbq