AS40043 Brown University Health

LIFESPAN - Brown University Health · registered in the United States

IPv4 addresses7682 prefixes · <0.001% of announced IPv4

Rank in United States#9,690largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#44,371of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS40043 in ASN lookup Look up an IP in this network (192.138.176.1) All networks in United States

IPv4 prefixes

All 2 prefixes, in address order.

192.138.176.0/23
192.138.178.0/24

Similar-sized networks in United States

ASNNameIPv4 addresses

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AS40042#9689 SUFFOLK-COUNTY-GOVERNMENT - Suffolk County Government768

AS40057#9691 GAAQUA - Georgia Aquarium, INC.768

AS40059#9692 CBCCTS-HQNET - Community Blood Center768

AS40062#9693 ASCENDLEARNING - Ascend Learning, LLC768

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