AS11975 The College of William and Mary

WM - The College of William and Mary · registered in the United States

IPv4 addresses131,0729 prefixes · 0.004% of announced IPv4

Rank in United States#539largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#1,599of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS11975 in ASN lookup Look up an IP in this network (128.239.0.1) All networks in United States

IPv4 prefixes

All 9 prefixes, in address order.

128.239.0.0/19
128.239.32.0/23
128.239.34.0/23
128.239.36.0/22
128.239.40.0/21
128.239.48.0/20
128.239.64.0/18
128.239.128.0/17
139.70.0.0/16

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AS13636#540 NECAM-AS - NEC Corporation of America131,072

AS14017#541 BNSF-AS - Burlington Northern Sante Fe Railway Corp131,072

AS16988#542 IPAPER - International Paper Company131,072

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