AS29 Yale University

YALE-AS - Yale University · registered in the United States

IPv4 addresses131,58415 prefixes · 0.004% of announced IPv4

Rank in United States#486largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#1,519of 79,396 networks with IPv4

IPv61 x /32 (65,536 x /48)1 prefixes

CountryUnited States18,679 ASNs registered there

Open AS29 in ASN lookup Look up an IP in this network (128.36.0.1) All networks in United States

IPv4 prefixes

All 15 prefixes, in address order.

128.36.0.0/22
128.36.4.0/24
128.36.5.0/24
128.36.6.0/23
128.36.8.0/22
128.36.12.0/23
128.36.14.0/24
128.36.16.0/20
128.36.32.0/19
128.36.64.0/18
128.36.128.0/17
130.132.0.0/16
192.31.2.0/24
192.31.236.0/24
192.35.89.0/24

IPv6 prefixes

All 1 prefix.

2604:b200::/32

Similar-sized networks in United States

ASNNameIPv4 addresses

AS2642#483 LEG-CA-GOV - California Department of Technology131,840

AS5696#484 EXPRES - Express Scripts Incorporated131,840

AS22093#485 CCF-NETWORK - Cleveland Clinic Foundation131,840

AS1649#487 DNIC-AS-01649 - Headquarters, USAISC131,584

AS1580#488 DNIC-ASBLK-01550-01601 - United States Department of Defense (DoD)131,584

AS2025#489 UTOLEDO - University of Toledo131,584

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