AS40098 Community Antenna Service, Inc.

CASNET - Community Antenna Service, Inc. · registered in the United States

IPv4 addresses12,54414 prefixes · <0.001% of announced IPv4

Rank in United States#2,645largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#8,039of 79,396 networks with IPv4

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

CountryUnited States18,679 ASNs registered there

Open AS40098 in ASN lookup Look up an IP in this network (12.20.123.1) All networks in United States

IPv4 prefixes

All 14 prefixes, in address order.

12.20.123.0/24
12.27.33.0/24
12.109.102.0/24
12.171.228.0/22
12.171.232.0/22
23.137.176.0/24
24.231.16.0/20
192.119.128.0/22
198.179.6.0/24
216.20.128.0/21
216.20.136.0/22
216.20.140.0/24
216.20.141.0/24
216.20.142.0/23

IPv6 prefixes

All 1 prefix.

2604:480::/32

Similar-sized networks in United States

ASNNameIPv4 addresses

AS25660#2642 CTC - Fidium12,544

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AS30165#2644 DALTON-UTILITIES-OPTILINK - Dalton Utilities12,544

AS30119#2646 PLUMAS-SIERRA-TELECOMMUNICATIONS - Plumas Sierra Telecommunications12,544

AS16633#2647 I-3 - N-able Technologies, Inc.12,544

AS400941#2648 NUBINITY - Nubinity, LLC12,544

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