AS1224 University of Illinois

NCSA-AS - University of Illinois · registered in the United States

IPv4 addresses65,7922 prefixes · 0.002% of announced IPv4

Rank in United States#944largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#2,776of 79,396 networks with IPv4

IPv61 x /481 prefixes

CountryUnited States18,679 ASNs registered there

Open AS1224 in ASN lookup Look up an IP in this network (141.142.0.1) All networks in United States

IPv4 prefixes

All 2 prefixes, in address order.

141.142.0.0/16
198.17.196.0/24

IPv6 prefixes

All 1 prefix.

2620:0:c80::/48

Other ASNs named University of Illinois

4 other networks use the same organisation name; together with AS1224 they announce 291,580 IPv4 addresses.

ASNNameIPv4 addresses

AS38UIUC - University of Illinois US210,944

AS698ASN-UIUC-REGION-AS - University of Illinois US12,288

AS40387UI-ICCN - University of Illinois US2,044

AS10764STARTAP - University of Illinois US512

Similar-sized networks in United States

ASNNameIPv4 addresses

AS3671#941 SLAC - SLAC National Accelerator Laboratory65,792

AS13462#942 IEEE - Institute of Electrical and Electronics Engineers, Inc65,792

AS32064#943 AMUAS1 - American University65,792

AS4385#945 RIT-ASN - Rochester Institute of Technology65,792

AS6377#946 4JNET - Eugene School District 4J65,792

AS6406#947 CEBAF - Thomas Jefferson National Accelerator Facility65,792

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