AS32666 Case Western Reserve University

CWRU-AS-1 - Case Western Reserve University · registered in the United States

IPv4 addresses66,3044 prefixes · 0.002% of announced IPv4

Rank in United States#881largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#2,672of 79,396 networks with IPv4

IPv61 x /32 (65,536 x /48)1 prefixes

CountryUnited States18,679 ASNs registered there

Open AS32666 in ASN lookup Look up an IP in this network (129.22.0.1) All networks in United States

IPv4 prefixes

All 4 prefixes, in address order.

129.22.0.0/16
192.5.109.0/24
192.5.110.0/24
192.5.113.0/24

IPv6 prefixes

All 1 prefix.

2606:ea00::/32

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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