ad.cornell.edu - robtex.com

ad.cornell.edu

DNSSEC⚠️ Not signed
A128.253.173.245🇺🇸 CORNELL-AS128.253.0.0/16 Cornell University Network Engineering Rhodes Hall, 757 136 Hoy Road Ithaca, NY 14853
PTRad5.cornell.edu

cornell.edu

DNSSEC⚠️ Not signed
A128.253.173.241🇺🇸 CORNELL-AS128.253.0.0/16 Cornell University Network Engineering Rhodes Hall, 757 136 Hoy Road Ithaca, NY 14853
A128.253.173.242🇺🇸 CORNELL-AS128.253.0.0/16 Cornell University Network Engineering Rhodes Hall, 757 136 Hoy Road Ithaca, NY 14853
A128.253.173.243🇺🇸 CORNELL-AS128.253.0.0/16 Cornell University Network Engineering Rhodes Hall, 757 136 Hoy Road Ithaca, NY 14853
A128.253.173.244🇺🇸 CORNELL-AS128.253.0.0/16 Cornell University Network Engineering Rhodes Hall, 757 136 Hoy Road Ithaca, NY 14853
A128.253.173.245🇺🇸 CORNELL-AS128.253.0.0/16 Cornell University Network Engineering Rhodes Hall, 757 136 Hoy Road Ithaca, NY 14853
A128.253.173.246🇺🇸 CORNELL-AS128.253.0.0/16 Cornell University Network Engineering Rhodes Hall, 757 136 Hoy Road Ithaca, NY 14853
NSdns.cit.cornell.edu ⭐
NSbigred.cit.cornell.edu
NScudns.cit.cornell.edu
NSdrdns.cit.cornell.edu
NSdrdns2.cit.cornell.edu
MXcornell-edu.mail.protection.outlook.com ⭐
TXTautodesk-domain-verification=9Y0MrpeHy7LiqjUs0Rpy
TXTv=spf1 ip4:128.253.150.144/30 ip4:128.253.150.158 ip4:128.253.150.176 ip4:128...
TXTsending_domain44232=26593424e3f9a029c8413a3f66844938dd909eec6d3c1421168e0fa97...
TXTgoogle-site-verification=CauHX8dfnPle2exSgs6k3OuJ_rPzkV1d6n6E9OFJFO8
TXTadobe-idp-site-verification=f41c9778dd61e0b903e5daff9095300a03eb9ad4a2a7ce435...
TXTapple-domain-verification=R62yGBLwZW9fUKsm
TXTgoogle-site-verification=Gh3jhxuBIdlsH1dgfvJhSGS30sk0OFFvel_I9xQkI5c
TXTNmwZsJfvHf2DUPwvPqMaLkflPi89l0leQfEkMtPmpxQNqlkPy0anm5LZM/N+sxrW+oJfdGKCyoi/q...
TXTgoogle-site-verification=V6u6xIMwPwKv6d55ZV4VqbkO1mjLlzyvQKkbz4usOM0
TXT7OT7JRZVY1IKZ8J8U84AK2JX4T0J2BM42TL8LSZLV
TXTfacebook-domain-verification=kiwj4xtbf69jsywfq4nlu7a0z81doz
SOAdns.cit.cornell.edunsmaster@cornell.edu serial=3604240902
⚠️ On DNS blocklist: pro.plus, ultimate
WOT: SAFE (95/100)
rank #217 globally
rank #5 in the tld
This domain name is associated with Cornell University, an Ivy League research university located in Ithaca, New York. The ".edu" extension signifies that the domain is used for educational institutions, specifically colleges and universities. The Cornell.edu domain is used for the university's website, where one can find information about their programs, research, faculty, and more.WOT: SAFE (95/100)
📈 Tranco rank: #594
cornell.edu - Tranco Rank (30d: ↓-216)356400450500550600616Mar 15Mar 24Apr 2Apr 11Apr 20Apr 22Rank#378#594

Cornell University

Cornell University is a private Ivy League research university founded in 1865 by Ezra Cornell and Andrew (0x4469636b)son White. Guided by its founding vision that "any person can find instruction in any study," Cornell has grown into one of the world's leading academic institutions. The university is headquartered in Ithaca, New York, with an additional campus in New York City (Cornell Tech on Roosevelt Island).

Academic Profile

  • Classification: Private Ivy League research university and New York's land-grant institution
  • Student Body: Approximately 25,000+ students across all campuses
  • Colleges: Multiple schools including Engineering (recently renamed David A. Duffield College of Engineering), Arts & Sciences, Agriculture, Business, Law, and Medicine
  • Research Focus: Environmental sustainability, agricultural advancement, AI in healthcare, and maritime technology

DNS Infrastructure

Cornell operates its own authoritative DNS infrastructure under the Cornell Information Technologies (CIT) department:

ServiceDetails
Nameserversbigred.cit.cornell.edu,cudns.cit.cornell.edu,dns.cit.cornell.edu, plus cloud-hosted DR servers on Microsoft Azure and AWS
MailMicrosoft 365 (cornell-edu.mail.protection.outlook.com)
Web HostingSix redundant IPs (128.253.173.241-246) on Cornell's own AS (CORNELL-AS)
DNSSECNot enabled (unsigned zone)

The university maintains over 100 subdomains serving various departments, research centers, and administrative functions.

Subdomains

as-ast-mellon01.ad.cornell.edu
as-kiw-df259-2.ad.cornell.edu
adfs.ad.cornell.edu
la-438bpx2-19.ad.cornell.edu
as-ast-mellon02.ad.cornell.edu
aad-aa2669-lt2.ad.cornell.edu
ag-clo-37xvb24.ad.cornell.edu
aad-ejr32-lt1.ad.cornell.edu

Same first word

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DNS History

5 records (1 active, 4 former)

20162017201820192020202120222023202420252026A128.253.173.245128.253.173.241128.253.173.246128.253.173.247128.253.173.248
○A128.253.173.2412015-07-16 → 2016-03-26 · 4 obs
● 2015-07-16 15:32:44
● 2016-03-26 04:00:34
○ 2016-07-19 06:37:02
○ 2026-04-24 13:51:58
●A128.253.173.2452016-07-19 → 2026-04-24 · 3 obs
○ 2016-03-26 04:00:34
● 2016-07-19 06:37:02
● 2026-04-24 13:51:58
○A128.253.173.2462015-07-16 → 2016-03-26 · 4 obs
● 2015-07-16 15:32:44
● 2016-03-26 04:00:34
○ 2016-07-19 06:37:02
○ 2026-04-24 13:51:58
○A128.253.173.2472016-07-19 → 2016-08-28 · 5 obs
○ 2016-03-26 04:00:34
● 2016-07-19 06:37:02
● 2016-08-28 15:15:40
○ 2026-02-23 11:41:26
○ 2026-04-24 13:51:58
○A128.253.173.2482016-07-19 → 2016-08-28 · 5 obs
○ 2016-03-26 04:00:34
● 2016-07-19 06:37:02
● 2016-08-28 15:15:40
○ 2026-02-23 11:41:26
○ 2026-04-24 13:51:58

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
edul.edu-servers.net, m.edu-servers.net, k.edu-servers.net, e.edu-servers.net...-
cornell.edubigred.cit.cornell.edu, cudns.cit.cornell.edu, dns.cit.cornell.edu, drdns.cit.cornell.edu...5 records

✅ Authoritative Response

Server:132.236.56.252

NS records: bigred.cit.cornell.edu, cudns.cit.cornell.edu, dns.cit.cornell.edu, drdns.cit.cornell.edu, drdns2.cit.cornell.edu

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cornell.edu (unsigned zone)

⏱️ Timing

Total: 163ms | Queries: -

📄 Records

TypeCountSample Data
A1128.253.173.245

📌 Glue Records Collected

Total: 5

In-bailiwick: 5 (bigred.cit.cornell.edu, cudns.cit.cornell.edu, dns.cit.cornell.edu...)

Analysis

Hierarchy

ad.cornell.edu is a parent of as-ast-mellon01.ad.cornell.edu, as-kiw-df259-2.ad.cornell.edu, adfs.ad.cornell.edu, la-438bpx2-19.ad.cornell.edu and as-ast-mellon02.ad.cornell.edu, plus a few other host names.

IP Addresses

ad.cornell.edu resolves to one IP number: 128.253.173.245.

Other host names for instance ad5.cornell.edu and cornell.edu share IP numbers with ad.cornell.edu.