WWW.ROBTEX.COM - sipa.columbia.edu

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sipa.columbia.edu checked at 2025-10-06T17:43:09.177Z 405ms 252/252/252 100% R:19

`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 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`
NS	`auth4.dns.cogentco.com`
		A	2001:978:1:a::d^{🇺🇸 Cogent Communications, Inc.}
			PTR	`auth4.dns.cogentco.com`
		A	80.245.32.74^{🇺🇸 Cogent Communications, Inc.}
			PTR	`auth4.dns.cogentco.com`
NS	`auth5.dns.cogentco.com`
		A	2001:978:1:b::d^{🇺🇸 Cogent Communications, Inc.}
			PTR	`auth5.dns.cogentco.com`
		A	80.91.64.50^{🇪🇸 Cogent Communications, Inc.}
			PTR	`auth5.dns.cogentco.com`
MX	`sipa-columbia-edu.mail.protection.outlook.com`
		A	2a01:111:f403:c903::^{🇺🇸 Microsoft}
			PTR	`mail-co1pr03cu00100.inbound.protection.outlook.com`
		A	2a01:111:f403:c931::^{🇺🇸 Microsoft}
			PTR	`mail-sn1pr02cu00100.inbound.protection.outlook.com`
		A	2a01:111:f403:f912::^{🇺🇸 Microsoft}
			PTR	`mail-cy5pr03cu00200.inbound.protection.outlook.com`
		A	2a01:111:f403:f913::^{🇺🇸 Microsoft}
			PTR	`mail-cy1pr03cu00100.inbound.protection.outlook.com`
		A	52.101.10.5^{🇺🇸 Microsoft}
			PTR	`mail-bn6pr04cu00105.inbound.protection.outlook.com`
		A	52.101.11.10^{🇺🇸 Microsoft}
			PTR	`mail-sa9pr03cu00202.inbound.protection.outlook.com`
		A	52.101.41.58^{🇺🇸 Microsoft}
			PTR	`mail-sj0pr02cu00102.inbound.protection.outlook.com`
		A	52.101.194.17^{🇺🇸 Microsoft}
			PTR	`mail-ch5pr02cu00401.inbound.protection.outlook.com`
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

cu.sipa.columbia.edu

lemannfellows.sipa.columbia.edu

sipa-labs-hp16.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 and sipa-labs-hp16.sipa.columbia.edu.

sipa.columbia.edu has two IP numbers: 162.159.128.65 and 162.159.138.64.

Other host names, for instance 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, including 217.5.149.in-addr.arpa, upsbrown.info, 251.2.199.in-addr.arpa, 127.149.in-addr.arpa and 13.246.192.in-addr.arpa.

These name servers are commonly used with ext-ns2.columbia.edu, acme.ucc.cuny.edu, lavinia.cis.cuny.edu, ns10.customer.level3.net, ns1.nyp.org, ns2.nyp.org, 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.

A single mail server handles sipa.columbia.edu, sipa-columbia-edu.mail.protection.outlook.com.

Host sipa-columbia-edu.mail.protection.outlook.com points to eight IPs: 2a01:111:f403:c903::, 2a01:111:f403:c931::, 2a01:111:f403:f912::, 2a01:111:f403:f913::, 52.101.10.5, 52.101.11.10, 52.101.41.58 and 52.101.194.17.

dbq