AS6200 University of Illinois Chicago

UIC-AS - University of Illinois Chicago · registered in the United States

IPv4 addresses131,32826 prefixes · 0.004% of announced IPv4

Rank in United States#496largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#1,533of 79,396 networks with IPv4

IPv61 x /481 prefixes

CountryUnited States18,679 ASNs registered there

Open AS6200 in ASN lookup Look up an IP in this network (128.248.0.1) All networks in United States

IPv4 prefixes

All 26 prefixes, in address order.

128.248.0.0/22
128.248.4.0/23
128.248.6.0/23
128.248.8.0/21
128.248.16.0/21
128.248.24.0/22
128.248.28.0/23
128.248.30.0/24
128.248.31.0/24
128.248.32.0/19
128.248.64.0/18
128.248.128.0/17
131.193.0.0/19
131.193.32.0/23
131.193.34.0/24
131.193.35.0/24
131.193.36.0/22
131.193.40.0/21
131.193.48.0/20
131.193.64.0/18
131.193.128.0/19
131.193.160.0/20
131.193.176.0/21
131.193.184.0/21
131.193.192.0/18
192.43.252.0/24

IPv6 prefixes

All 1 prefix.

2620:12f:90ff::/48

Similar-sized networks in United States

ASNNameIPv4 addresses

AS6106#493 UCR-EDU - University of California, Riverside131,334

AS53828#494 NITEL - NETWORK INNOVATIONS, LLC131,328

AS4185#495 ATTIS-ASN4185 - AT&T Enterprises, LLC131,328

AS166#497 IDA-AS - Institute for Defense Analyses131,328

AS1563#498 DNIC-ASBLK-01550-01601 - United States Department of Defense (DoD)131,328

AS2024#499 NU - Eversource Energy131,328

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