AS26 Cornell University

CORNELL - Cornell University · registered in the United States

IPv4 addresses197,3766 prefixes · 0.006% of announced IPv4

Rank in United States#332largest network in US by IPv4 space, of 18,338 · 0.01% of US

Rank worldwide#1,107of 79,396 networks with IPv4

IPv616 x /481 prefixes

CountryUnited States18,679 ASNs registered there

Open AS26 in ASN lookup Look up an IP in this network (128.84.0.1) All networks in United States

IPv4 prefixes

All 6 prefixes, in address order.

128.84.0.0/16
128.253.0.0/16
132.236.0.0/16
192.35.82.0/24
192.122.235.0/24
192.122.236.0/24

IPv6 prefixes

All 1 prefix.

2620:110:d000::/44

Similar-sized networks in United States

ASNNameIPv4 addresses

AS11442#329 NCSU - North Carolina State University197,632

AS46#330 RUTGERS - Rutgers, The State University197,632

AS2637#331 GEORGIA-TECH - Georgia Institute of Technology197,376

AS1999#333 HOUSE-AS-1 - U.S. House of Representatives197,376

AS1600#334 DNIC-ASBLK-01550-01601 - United States Department of Defense (DoD)197,120

AS40831#335 PHS - Mass General Brigham Incorporated196,864

IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources