AS25978 Rush University Medical Center

RUSH-EXTERNAL - Rush University Medical Center · registered in the United States

IPv4 addresses65,5369 prefixes · 0.002% of announced IPv4

Rank in United States#1,210largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#3,274of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS25978 in ASN lookup Look up an IP in this network (144.74.0.1) All networks in United States

IPv4 prefixes

All 9 prefixes, in address order.

144.74.0.0/20
144.74.16.0/23
144.74.18.0/23
144.74.20.0/23
144.74.22.0/23
144.74.24.0/21
144.74.32.0/19
144.74.64.0/18
144.74.128.0/17

Similar-sized networks in United States

ASNNameIPv4 addresses

AS25789#1207 LMU - Loyola Marymount University65,536

AS25968#1208 SELUNET - Southeastern Louisiana University65,536

AS25969#1209 SLU - St. Louis University65,536

AS26438#1211 MONROE-COMMUNITY-COLLEGE - Monroe Community College65,536

AS26539#1212 GIANT-FOOD-INC - Ahold U.S.A., Inc.65,536

AS26551#1213 SARGENT-AND-LUNDY - Sargent & Lundy Engineers65,536

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