AS14221 University of Washington

UW-GR-AS - University of Washington · registered in the United States

IPv4 addresses2,0481 prefixes · <0.001% of announced IPv4

Rank in United States#6,072largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#22,517of 79,396 networks with IPv4

IPv6256 x /481 prefixes

CountryUnited States18,679 ASNs registered there

Open AS14221 in ASN lookup Look up an IP in this network (173.250.224.1) All networks in United States

IPv4 prefixes

All 1 prefix, in address order.

173.250.224.0/21

IPv6 prefixes

All 1 prefix.

2607:4000:300::/40

Other ASNs named University of Washington

3 other networks use the same organisation name; together with AS14221 they announce 245,248 IPv4 addresses.

ASNNameIPv4 addresses

AS73WASHINGTON-AS - University of Washington US238,080

AS101WASH-NSF-AS - University of Washington US4,096

AS64247UW-RESEARCH - University of Washington US1,024

Similar-sized networks in United States

ASNNameIPv4 addresses

AS401416#6069 AURA-AS - Aurascape, Inc.2,048

AS13437#6070 INNOVEX - Innovex Solutions LLC2,048

AS13926#6071 NETPROTECT-PHX - Strong Technology, LLC.2,048

AS21951#6073 STOLAF - St. Olaf College2,048

AS27392#6074 639-DATACENTERS - 639 DC Main LLC2,048

AS32726#6075 LIBERTY - Liberty University2,048

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