Network
AS6128 Cablevision Systems Corp.
- Autonomous system number
- AS6128
- Registered in
- US
- Registry
- ARIN
- ASN registered
- Not available
- IPv4 prefixes announced
- 82
- IPv6 prefixes announced
- 10
- Internet exchanges
- 4
- Data centres
- 5
- Internet users (estimate)
- ~3,087,120
Prefix counts from the global routing table as of 2026-10-03. Not counted: 10 more prefixes this network originates that few routers see, inside address space AS3737 announces widely. Exchange and data-centre counts are what the network lists in PeeringDB. User estimate by APNIC Labs, 2026-09-30. Website: www.optimum.net
Upstreams and peers, traceroute paths through it, where it hands off to its transit providers, routing history and alerts - free with an account, and queryable from Claude, ChatGPT and other AI agents through the BGPScout MCP server.
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