AS6106 University of California, Riverside

UCR-EDU - University of California, Riverside · registered in the United States

IPv4 addresses131,33411 prefixes · 0.004% of announced IPv4

Rank in United States#493largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#1,528of 79,396 networks with IPv4

IPv61 x /32 (65,536 x /48)18 prefixes

CountryUnited States18,679 ASNs registered there

Open AS6106 in ASN lookup Look up an IP in this network (137.164.23.17) All networks in United States

IPv4 prefixes

All 11 prefixes, in address order.

137.164.23.16/31
137.164.24.208/30
138.23.0.0/18
138.23.64.0/19
138.23.96.0/21
138.23.104.0/22
138.23.108.0/22
138.23.112.0/20
138.23.128.0/17
169.235.0.0/16
192.31.146.0/24

IPv6 prefixes

All 18 prefixes.

2607:f290::/44
2607:f290:10::/48
2607:f290:11::/48
2607:f290:12::/47
2607:f290:14::/46
2607:f290:18::/45
2607:f290:20::/43
2607:f290:40::/42
2607:f290:80::/41
2607:f290:100::/40
2607:f290:200::/39
2607:f290:400::/38
2607:f290:800::/37
2607:f290:1000::/36
2607:f290:2000::/35
2607:f290:4000::/34
2607:f290:8000::/33
2607:f380:1::118:9a41:8d00/122

Similar-sized networks in United States

ASNNameIPv4 addresses

AS11834#490 DREXEL-ASN - Drexel University131,584

AS16989#491 UTHSC - The University of Tennessee Health Science Center131,584

AS20337#492 SUNYPOLY-ASN - SUNY Institute of Technology131,584

AS53828#494 NITEL - NETWORK INNOVATIONS, LLC131,328

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

AS6200#496 UIC-AS - University of Illinois Chicago131,328

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