AS11399 Williams College

WILLIAMSCOLLEGE - Williams College · registered in the United States

IPv4 addresses65,7922 prefixes · 0.002% of announced IPv4

Rank in United States#939largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#2,767of 79,396 networks with IPv4

IPv619 x /484 prefixes

CountryUnited States18,679 ASNs registered there

Open AS11399 in ASN lookup Look up an IP in this network (137.165.0.1) All networks in United States

IPv4 prefixes

All 2 prefixes, in address order.

137.165.0.0/16
204.225.173.0/24

IPv6 prefixes

All 4 prefixes.

2001:470:ed::/48
2602:811:3000::/44
2606:6b40:fff1::/48
2606:6b40:fff2::/48

Similar-sized networks in United States

ASNNameIPv4 addresses

AS316#936 DNIC-ASBLK-00306-00371 - United States Department of Defense (DoD)65,792

AS4201#937 ORST-AS - Oregon State University65,792

AS6510#938 BYU - Brigham Young University65,792

AS545#940 NRI - Corporation for National Research Initiatives65,792

AS3671#941 SLAC - SLAC National Accelerator Laboratory65,792

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

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