`cise.columbia.edu`

	DNSSEC	⚠️ Not signed
	A	198.49.23.144^{🇺🇸 SQUARESPACE-1198.49.23.0/24 Squarespace, Inc. 459 Broadway, 5th Floor New York, NY 10013 US}
	A	198.49.23.145^{🇺🇸 SQUARESPACE-1198.49.23.0/24 Squarespace, Inc. 459 Broadway, 5th Floor New York, NY 10013 US}
	A	198.185.159.144^{🇺🇸 SQUARESPACE-1198.185.159.0/24 Squarespace, Inc. 459 Broadway, 5th Floor New York, NY 10013 US}
	A	198.185.159.145^{🇺🇸 SQUARESPACE-1198.185.159.0/24 Squarespace, Inc. 459 Broadway, 5th Floor New York, NY 10013 US}

`columbia.edu`

	DNSSEC	⚠️ Not signed
	A	162.159.128.65^{Cloudflare162.159.128.0/19 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
	A	162.159.138.64^{Cloudflare162.159.128.0/19 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
	NS	`ext-ns1.columbia.edu` ⭐
	NS	`auth1.dns.cogentco.com`
	NS	`auth2.dns.cogentco.com`
	NS	`ns1.lse.ac.uk`
	MX	`mxa-00364e01.gslb.pphosted.com` ⭐
	MX	`mxb-00364e01.gslb.pphosted.com` ⭐
	TXT	`wpe-verification=cssrsprod`
	TXT	`ca3-154a83c0e9b44fa094af06b7a8c9f489`
	TXT	`rm_verify=cf192bfd71`
	TXT	`intersight=f68fd98601fae5dcfd60cd38f9df964367f5e3ebe94f0cc148eec13f7e11d7e6`
	TXT	`ca3-018df5b7d38b415fbe9c920d89e3e815`
	TXT	`atlassian-domain-verification=TGY4izz2FIXsrTR48IJgpJMfixggF0xpHJ4TC91Ii5DqZYv...`
	TXT	`MS=ms94259742`
	TXT	`openai-domain-verification=dv-coLwtcZeuA8rWCUFNhz21TTz`
	TXT	`google-site-verification=6m_FjnmBT3E6N2cHMf6NxPjSVoWbq4IcRYNlAKT1Dzw`
	TXT	`wpe-verification=ncdpcolumbia`
	TXT	`atlassian-domain-verification=3a/aVmiVzaMOzlhAodx3n7lmq1cDotGOHNI3ehzFLzgN7YL...`
	TXT	`v=spf1 include:%{ir}.%{v}.%{d}.spf.has.pphosted.com ~all`
	TXT	`anthropic-domain-verification-01mqc0=QYIx6Pw50pyhbeOfqjhRRNpve`
	TXT	`asv=c2f28d3e6fab94ed285140f6a7a2f595`
	TXT	`00DVG000008EUsr=1TBVG0000000K0L`
	TXT	`00D36000000XoHU=1TBUw00000001fF`
	TXT	`MS=ms88535648`
	TXT	`google-site-verification=79W02b1NsvPOhVkXxG5gXzAXuxuYquPTXmx_l6KfRok`
	TXT	`MS=ms32107722`
	TXT	`docusign=abbafadf-a495-4889-935f-5fdac37be903`
	TXT	`docusign=f8b82e15-b287-46b9-9729-a7436d71c422`
	TXT	`adobe-idp-site-verification=c4c82a5f2bf3cc3ee4ad2ee246c28e17ead150faf152556bc...`
	TXT	`google-site-verification=B93x40FIZF4LI-5cayepjvuwU8ZodIQ09zIDG1gHtIc`
	TXT	`apple-domain-verification=6W1ObUreaMieGziS`
	TXT	`fastly-domain-delegation-UzZdOKwpsuzDObCLhWK0-12292020`
	TXT	`fastly-domain-delegation-columbia-323594-2020-12-07`
	TXT	`ZOOM_verify_H76gKGnfTfSjo0uBs3ATpw`
	TXT	`ZOOM_verify_aIBp_UI9RA-_nAc54T9CiA`
	TXT	`ZOOM_verify_ohdpGstzTlO2gNsWqnSiHQ`
	TXT	`ZOOM_verify_ZJlClnqsRTqo4L8EQGaPDg`
	TXT	`ZOOM_verify__tMWR0IkQ5mSUFNi7PT0-A`
	SOA	`ext-ns1.columbia.edu`hostmaster@columbia.edu serial=91961

WOT: SAFE (93/100)
rank #308 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.WOT: SAFE (93/100)
📈 Tranco rank: #1,020

Columbia University

columbia.edu is the primary domain for Columbia University, one of the eight Ivy League universities and one of the oldest institutions of higher learning in the United States. Located in the Morningside Heights neighborhood of Manhattan, New York City, Columbia is a private research university offering bachelor's, master's, and doctoral degrees across a wide range of disciplines.

Key Facts

Type: Private, not-for-profit research university
Location: West 116th Street and Broadway, New York, NY 10027
Enrollment (Fall 2023): 35,173 total students (9,164 undergraduate, 26,009 graduate)
Student-to-faculty ratio: 6:1
Six-year graduation rate: 96%
Tranco Rank: #990 globally

Technical Infrastructure

Nameservers:

ext-ns1.columbia.edu(128.59.1.1) — Columbia's own nameserver
auth1.dns.cogentco.com/auth2.dns.cogentco.com— Cogent Communications (AS174)
ns1.lse.ac.uk— London School of Economics (academic partnership)

Web Hosting: The main website is served via Cloudflare (162.159.128.65, 162.159.138.64).

Email: Handled by Proofpoint (mxa-00364e01.gslb.pphosted.com,mxb-00364e01.gslb.pphosted.com) for enterprise email security.

DNSSEC: Not signed.

The domain maintains 27 TXT records for various service verifications including Google, Apple, Zoom, Atlassian, Adobe, and OpenAI, reflecting the university's extensive use of cloud and SaaS platforms.

Subdomains

elektra.cise.columbia.edu

director.cise.columbia.edu

mystique.cise.columbia.edu

user-c05d353d7f.cise.columbia.edu

crlcolorlaser.cise.columbia.edu

mrsec-frame-grabber.cise.columbia.edu

cise-outreach-a.cise.columbia.edu

www.cise.columbia.edu

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DNS History

6 records (4 active, 2 former)

○A128.59.105.412015-08-28 → 2016-12-29 · 4 obs

● 2015-08-28 16:35:44
● 2016-12-29 15:59:50
○ 2017-08-31 04:39:18
○ 2026-04-24 10:01:18

●A198.185.159.1442026-02-15 → 2026-04-24 · 3 obs

○ 2017-08-31 04:39:18
● 2026-02-15 01:35:50
● 2026-04-24 10:01:18

●A198.185.159.1452026-02-15 → 2026-04-24 · 3 obs

○ 2017-08-31 04:39:18
● 2026-02-15 01:35:50
● 2026-04-24 10:01:18

●A198.49.23.1442026-02-15 → 2026-04-24 · 3 obs

○ 2017-08-31 04:39:18
● 2026-02-15 01:35:50
● 2026-04-24 10:01:18

●A198.49.23.1452026-02-15 → 2026-04-24 · 3 obs

○ 2017-08-31 04:39:18
● 2026-02-15 01:35:50
● 2026-04-24 10:01:18

○CNAMEias-drupal7-prod.cc.columbia.edu2015-08-28 → 2026-02-17 · 4 obs

● 2015-08-28 16:35:44
● 2026-02-17 02:06:56
○ 2026-02-17 16:50:30
○ 2026-04-24 10:01:18

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
edu	a.edu-servers.net, b.edu-servers.net, c.edu-servers.net, d.edu-servers.net...	-
columbia.edu	auth1.dns.cogentco.com, auth2.dns.cogentco.com, ns1.lse.ac.uk, ext-ns1.columbia.edu	1 record

✅ Authoritative Response

Server:66.28.0.14

NS records: auth1.dns.cogentco.com, auth2.dns.cogentco.com, ns1.lse.ac.uk, ext-ns1.columbia.edu

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for columbia.edu (unsigned zone)

⏱️ Timing

Total: 771ms | Queries: -

📄 Records

Type	Count	Sample Data
A	4	`198.185.159.145, 198.185.159.144...`

📌 Glue Records Collected

Total: 1

In-bailiwick: 1 (ext-ns1.columbia.edu)

Analysis

Hierarchy

cise.columbia.edu is a parent of elektra.cise.columbia.edu, director.cise.columbia.edu, mystique.cise.columbia.edu, user-c05d353d7f.cise.columbia.edu, crlcolorlaser.cise.columbia.edu and a few other host names.

IP Addresses

cise.columbia.edu maps to four IP numbers: 198.49.23.144, 198.49.23.145, 198.185.159.144 and 198.185.159.145.

Other host names, for instance onceabear.com, a-singh.com, soatahoe.com, hotelcostarica.net and jeffersondna.org share IP numbers with cise.columbia.edu.

cise.columbia.edu - robtex.com