WWW.ROBTEX.COM - ext-ns1.columbia.edu

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ext-ns1.columbia.edu checked at 2025-10-05T15:39:10.026Z 115ms 62/62/62 100% R:11

`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`

`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.

PTR for

1.0.0.0.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.1.0.0.0.8.d.8.1.1.0.0.2.ip6.arpa

5.3.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.8.d.8.1.1.0.0.2.ip6.arpa

1.1.59.128.in-addr.arpa

NS for

cs.columbia.edu

c2b2.columbia.edu

22.59.128.in-addr.arpa

43.5.192.in-addr.arpa

jazzstudiesonline.org

osr.columbia.edu

iri.columbia.edu

dmi.columbia.edu

20.59.128.in-addr.arpa

baruch.cuny.edu

macaulay.cuny.edu

comet.columbia.edu

119.111.146.in-addr.arpa

ccc.columbia.edu

pulitzer.org

substanceabuse.columbia.edu

120.111.146.in-addr.arpa

med.cuny.edu

221.2.209.in-addr.arpa

columbiauniversity.us

healthsciences.columbia.edu

teacherscollege.edu

dodgefitnesscenter.com

mc.cumc.columbia.edu

191.59.128.in-addr.arpa

york.cuny.edu

228.128.in-addr.arpa

252.236.129.in-addr.arpa

cubhis.columbia.edu

9.59.128.in-addr.arpa

wcbn.org

95.146.in-addr.arpa

236.129.in-addr.arpa

cuf.columbia.edu

secure.barnard.edu

csi.cuny.edu

guttman.cuny.edu

clic.cs.columbia.edu

mdm.cumc.columbia.edu

18.59.128.in-addr.arpa

sps.cuny.edu

117.111.146.in-addr.arpa

slu.cuny.edu

cpmc.columbia.edu

lip.cuny.edu

ny.edu

art.columbia.edu

systemsbiology.columbia.edu

resnet.barnard.edu

p-i-r.org

97.104.143.in-addr.arpa

ncl.cs.columbia.edu

mailman.columbia.edu

millertheater.com

139.111.146.in-addr.arpa

citytech.cuny.edu

medicine.cuny.edu

64.59.128.in-addr.arpa

irvinginstitute.columbia.edu

stemcell.columbia.edu

adcu.columbia.edu

217.2.209.in-addr.arpa

millertheatre.com

gsb.columbia.edu

96.146.in-addr.arpa

eoc.cuny.edu

central.cuny.edu

columbia.edu

dbmi.columbia.edu

166.236.129.in-addr.arpa

barnard.edu

cuimc.columbia.edu

lc.cuny.edu

cumc.columbia.edu

255.236.129.in-addr.arpa

ctr.columbia.edu

tc.edu

iccr.columbia.edu

19.59.128.in-addr.arpa

ps.columbia.edu

uapc.cuny.edu

guest.barnard.edu

beoc.cuny.edu

wds.cumc.columbia.edu

158.111.146.in-addr.arpa

cuny.edu

65.59.128.in-addr.arpa

ee.columbia.edu

acs.cuny.edu

hs.columbia.edu

219.2.209.in-addr.arpa

icap.or.tz

teal.college.columbia.edu

135.111.146.in-addr.arpa

orl.columbia.edu

hhmi.columbia.edu

sipa.columbia.edu

39.160.in-addr.arpa

59.128.in-addr.arpa

sph.cuny.edu

AI analysis

ext-ns1.columbia.edu is used as a name server for cs.columbia.edu, c2b2.columbia.edu, 22.59.128.in-addr.arpa, 43.5.192.in-addr.arpa, jazzstudiesonline.org and hundreds of other domains.

With ext-ns1.columbia.edu, ext-ns2.columbia.edu, lavinia.cis.cuny.edu and acme.ucc.cuny.edu are commonly used as name servers.

ext-ns1.columbia.edu resolves to three IP numbers: 2001:18d8::35, 2001:18d8:1::1:1 and 128.59.1.1.

Other host names, for instance saell.cc.columbia.edu, share IP numbers with ext-ns1.columbia.edu.

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