AS19021 BTC Broadband Inc.

BTC-BROADBAND - BTC Broadband Inc. · registered in the United States

IPv4 addresses21,76010 prefixes · <0.001% of announced IPv4

Rank in United States#2,061largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#5,851of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS19021 in ASN lookup Look up an IP in this network (8.43.40.1) All networks in United States

IPv4 prefixes

All 10 prefixes, in address order.

8.43.40.0/23
38.59.144.0/20
38.146.144.0/20
38.187.144.0/20
67.217.144.0/21
67.217.152.0/22
67.217.156.0/23
67.217.158.0/24
162.208.44.0/22
216.14.144.0/20

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AS19635#2062 SANDHILL-AS - Sandhill Telephone Cooperative, Inc.21,760

AS27609#2063 USC-UNIVERSITY-HOSPITAL - USC-University Hospital21,760

AS394417#2064 AS-SONJ - NJOIT21,760

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