AS6128Cablevision Systems Corp.

United StatesRegistryARINTypeEyeball

As of 14th November 2026, AS6128 (Cablevision Systems Corp.), an access network registered in the United States with ARIN, originates 91 IPv4 prefixes covering 7.4M addresses and 10 IPv6 prefixes. By IPv4 address space that makes it the 98th-largest of the 80,840 networks we see originating IPv4, and the 30th-largest of 18,773 in the United States. It is seen behind 27 upstream networks, most often AS6461 (Zayo Bandwidth) and AS6939 (Hurricane Electric LLC), and in front of 3 downstream networks. 71% of its announcements have a valid RPKI ROA; 10 are RPKI-invalid. 88% of its routes reach at least 90% of full-feed peers.