AS19774 Avista Corporation

AVA1 - Avista Corporation · registered in the United States

IPv4 addresses5,1205 prefixes · <0.001% of announced IPv4

Rank in United States#4,100largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#13,608of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS19774 in ASN lookup Look up an IP in this network (198.181.16.1) All networks in United States

IPv4 prefixes

All 5 prefixes, in address order.

198.181.16.0/21
198.181.24.0/23
198.217.8.0/22
198.251.0.0/22
199.115.6.0/23

Other ASNs named Avista Corporation

1 other network uses the same organisation name; together with AS19774 they announce 7,168 IPv4 addresses.

ASNNameIPv4 addresses

AS62975AVA2 - Avista Corporation US2,048

Similar-sized networks in United States

ASNNameIPv4 addresses

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AS19766#4099 DRYDEN-FIBER - Dryden Fiber5,120

AS20030#4101 MCCLI-ARTELCO - Artelco5,120

AS20081#4102 NET2ATLANTA - NET2ATLANTA.COM LLC5,120

AS20097#4103 CITY-OF-TULSA - City of Tulsa5,120

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