AS397975 Realnets

BRITEFISH-01 - Realnets · registered in the United States

IPv4 addresses5122 prefixes · <0.001% of announced IPv4

Rank in United States#12,392largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#58,376of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS397975 in ASN lookup Look up an IP in this network (209.242.39.1) All networks in United States

IPv4 prefixes

All 2 prefixes, in address order.

209.242.39.0/24
216.24.43.0/24

Similar-sized networks in United States

ASNNameIPv4 addresses

AS397932#12389 NYSA-ASN - New York State Assembly512

AS397937#12390 TGNA-WTHR - TEGNA Inc.512

AS397957#12391 EMEA-PUBLIC - HEWLETT PACKARD ENTERPRISE COMPANY512

AS397979#12393 AIRMAX-1 - Airmax512

AS397989#12394 COP-CH - City of Portsmouth, Virginia512

AS397998#12395 TGNA-WNEP - TEGNA Inc.512

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