AS2552 Washington University

WUSTL-ASN - Washington University · registered in the United States

IPv4 addresses73,9843 prefixes · 0.002% of announced IPv4

Rank in United States#759largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#2,323of 79,396 networks with IPv4

IPv62 x /32 (131,072 x /48)2 prefixes

CountryUnited States18,679 ASNs registered there

Open AS2552 in ASN lookup Look up an IP in this network (65.254.96.1) All networks in United States

IPv4 prefixes

All 3 prefixes, in address order.

65.254.96.0/19
128.252.0.0/16
192.31.46.0/24

IPv6 prefixes

All 2 prefixes.

2604:3e00::/32
2606:fd80::/32

Similar-sized networks in United States

ASNNameIPv4 addresses

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AS5080#760 ARAMCO-AS - Aramco73,984

AS11745#761 USNH - University System of New Hampshire73,728

AS15147#762 DHSINETNOC - DEPARTMENT OF HOMELAND SECURITY73,728

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