AS19720 Cablevision Systems Corp.

CABLEVISION-CORP - Cablevision Systems Corp. · registered in the United States

IPv4 addresses2,3047 prefixes · <0.001% of announced IPv4

Rank in United States#5,888largest network in US by IPv4 space, of 18,338 · <0.01% of US

Rank worldwide#20,879of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryUnited States18,679 ASNs registered there

Open AS19720 in ASN lookup Look up an IP in this network (65.51.29.1) All networks in United States

IPv4 prefixes

All 7 prefixes, in address order.

65.51.29.0/24
65.51.31.0/24
167.206.119.0/24
167.206.120.0/24
167.206.122.0/23
216.2.193.0/24
216.2.194.0/23

Other ASNs named Cablevision Systems Corp.

1 other network uses the same organisation name; together with AS19720 they announce 4,869,888 IPv4 addresses.

ASNNameIPv4 addresses

AS6128CABLE-NET-1 - Cablevision Systems Corp. US4,867,584

Similar-sized networks in United States

ASNNameIPv4 addresses

AS19460#5885 SUTH - Sutherland Global Services, Inc.2,304

AS19580#5886 ART-LLC - A.R.T. Advisors, LLC2,304

AS19602#5887 AS19602 - Cantor Fitzgerald & Co.2,304

AS19796#5889 SHUBERT - Shubert Organization, Inc.2,304

AS19804#5890 ASNBLK-VTLA2 - NTT Global Networks Incorporated2,304

AS20096#5891 AMS-MIP-CA - HEWLETT PACKARD ENTERPRISE COMPANY2,304

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