AS399361 Alcoa USA Corp.

ALCOA-CORP - Alcoa USA Corp. · registered in the United States

IPv4 addresses2,0485 prefixes · <0.001% of announced IPv4

Rank in United States#6,479largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#24,543of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS399361 in ASN lookup Look up an IP in this network (142.79.176.1) All networks in United States

IPv4 prefixes

All 5 prefixes, in address order.

142.79.176.0/22
142.79.180.0/24
142.79.181.0/24
142.79.182.0/24
142.79.183.0/24

Similar-sized networks in United States

ASNNameIPv4 addresses

AS399064#6476 CONTENTGURU-US - Content Guru Inc2,048

AS399240#6477 BLUE-RIDGE-INTERNET - BLUE RIDGE INTERNET, L.L.C2,048

AS399352#6478 DRILLINGINFO-SEATTLE - Drilling Info Inc.2,048

AS399455#6480 IP-ROUTING-01 - IP Routing LLC2,048

AS399527#6481 WISPRENN-COG-FRO-JG - WISPRENN2,048

AS399604#6482 ES10-08873-01 - EXL SERVICE.COM, LLC2,048

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