AS6128 Cablevision Systems Corp. 🇺🇸 US
Announcing 92 prefixes, seen at the RIS collectors.
IPv4 prefixes
82
7,418,368 (28,978 × /24)
IPv6 prefixes
10
37 × /32
Upstreams
5
transit providers observed
Peers
12
settlement-free adjacencies
Downstreams
3
transit customers observed
Customer cone
411
ASes reachable through it
Registry and operator data
- AS number
- AS6128
- Name
- Cablevision Systems Corp.
- Organisation
- Cablevision Systems Corporation
- Country
- 🇺🇸 US
- RIR
- ARIN
- Network type
- Cable/DSL/ISP
- Traffic levels
- 1-5Tbps
- Scope
- North America
- Peering policy
- Open
- IRR as-set
- ARIN::AS6128:AS-CUSTOMERS
- Website
- http://www.optimum.net
- PeeringDB
- net/9902
- Exchanges
- 4
- Facilities
- 5
RPKI coverage of this AS
Its own announcements, validated against the current ROA set
Announced prefixes
10 in total
| Prefix | RPKI | Peers | Sample path | First seen |
|---|---|---|---|---|
| 2600:4800::/28 v6 | RPKI valid | 36 | 244826128 | 2026-09-18 |
| 2600:4800::/30 v6 | RPKI valid | 36 | 244826128 | 2026-09-18 |
| 2600:4804::/30 v6 | RPKI valid | 36 | 244826128 | 2026-09-18 |
| 2600:4808::/30 v6 | RPKI valid | 33 | 244826128 | 2026-09-18 |
| 2600:4808::/32 v6 | RPKI valid | 33 | 244826128 | 2026-09-18 |
| 2600:4809::/32 v6 | RPKI valid | 33 | 244826128 | 2026-09-18 |
| 2600:480a::/32 v6 | RPKI valid | 33 | 244826128 | 2026-09-18 |
| 2600:480b::/32 v6 | RPKI valid | 33 | 244826128 | 2026-09-18 |
| 2600:480c::/30 v6 | RPKI valid | 36 | 244826128 | 2026-09-18 |
| 2602:230::/32 v6 | RPKI valid | 36 | 244826128 | 2026-09-18 |