AS6128 Cablevision Systems Corporation
AS6128 is operated by Cablevision Systems Corporation and registered with ARIN.
It announces 81 IPv4 and 936 IPv6 prefixes, 98% of them RPKI valid.
RIPE RIS sees 23 upstream and peer networks and 3 downstream networks next to it.
PeeringDB lists it as a Cable/DSL/ISP network at 4 internet exchanges and 5 facilities. Its peering policy is open.
| Name | Cablevision Systems Corporation |
|---|---|
| Registry handle | CABLE-NET-1 |
| Registry (RIR) | ARIN |
| Country | United States (US) |
| Network type | Cable/DSL/ISP, North America |
| Peering policy | Open |
| IRR as-set | ARIN::AS6128:AS-CUSTOMERS |
| Prefixes (IPv4 / IPv6) | 81 / 936 |
| RPKI valid | 98% (998 / 1,017) |
| Upstreams and peers | 23 |
| Downstream networks | 3 |
| Website | optimum.net |
Routing health
- AS6128 announces 81 IPv4 and 936 IPv6 prefixes.
- 998 of 1017 announced prefixes are RPKI valid.
- 19 announced prefixes are not covered by a ROA of AS6128 (they may have none, or another network’s).
- 23 upstreams and peers, 3 downstream networks seen.
For every check with the fix (IRR route objects, the RPKI state of each route, reverse DNS and the registration), run the full network report.
Announced prefixes 1,017
- 24.38.0.0/17
- 24.38.192.0/18
- 24.44.0.0/14
- 24.89.128.0/18
- 24.146.128.0/17
- 24.157.32.0/19
- 24.157.51.0/24
- 24.184.0.0/14
- 24.188.0.0/14
- 24.189.218.0/24
- 24.228.0.0/16
- 24.246.96.0/19
- 47.16.0.0/14
- 47.16.0.0/15
- 47.18.0.0/16
- 47.20.0.0/14
- 50.29.0.0/17
- 63.142.20.0/24
- 63.247.160.0/19
- 64.15.0.0/16
- 65.19.0.0/16
- 67.80.0.0/13
- 67.80.0.0/14
- 67.84.0.0/14
- 68.192.0.0/13
- 68.192.0.0/14
- 68.196.0.0/14
- 69.27.224.0/19
- 69.27.228.0/24
- 69.112.0.0/13
- 69.112.0.0/14
- 69.116.0.0/14
- 69.120.0.0/13
- 69.120.0.0/14
- 69.124.0.0/14
- 74.88.0.0/15
- 74.89.0.0/24
- 74.90.0.0/16
- 75.99.0.0/16
- 75.127.128.0/17
- 96.56.0.0/15
- 104.148.128.0/17
- 104.246.0.0/17
- 107.188.0.0/17
- 108.58.0.0/16
- 108.162.0.0/18
- 108.170.64.0/18
- 108.179.0.0/18
- 142.54.64.0/18
- 144.62.128.0/17
- 148.74.0.0/15
- 148.76.0.0/18
- 148.76.192.0/19
- 148.76.224.0/19
- 148.77.128.0/17
- 162.216.56.0/21
- 167.206.0.0/19
- 167.206.32.0/21
- 167.206.40.0/22
- 167.206.44.0/24
- 167.206.45.0/24
- 167.206.46.0/23
- 167.206.48.0/20
- 167.206.64.0/19
- 167.206.96.0/20
- 167.206.112.0/22
- 167.206.113.0/24
- 167.206.116.0/23
- 167.206.121.0/24
- 167.206.124.0/22
- 167.206.128.0/17
- 173.2.0.0/15
- 173.220.0.0/16
- 173.229.64.0/18
- 173.251.0.0/17
- 174.44.0.0/16
- 192.208.120.0/21
- 198.46.96.0/19
- 198.182.247.0/24
- 209.140.32.0/19
- 216.255.96.0/19
- 2600:480a:2a10::/44
- 2600:480a:2a30::/44
- 2600:480a:2a50::/44
- 2600:480a:2a70::/44
- 2600:480a:2a90::/44
- 2600:480a:2ab0::/44
- 2600:480a:2ad0::/44
- 2600:480a:2af0::/44
- 2600:480a:2b10::/44
- 2600:480a:2b30::/44
- 2600:480a:3a10::/44
- 2600:480a:3a30::/44
- 2600:480a:3a50::/44
- 2600:480a:3a70::/44
- 2600:480a:3a90::/44
- 2600:480a:3ab0::/44
- 2600:480a:3ad0::/44
- 2600:480a:3af0::/44
- 2600:480a:3b10::/44
Showing the first 100.
Upstreams and peers 23
The networks RIPE RIS sees next to AS6128 in BGP paths, the most visible first.
Peering
Peering policy: Open. Suggested max-prefix limits: 2,000 IPv4, 1,000 IPv6. PeeringDB record
| Exchange | Ports | Speed | Route server |
|---|---|---|---|
| Equinix Ashburn | 1 | 100G | No |
| Equinix Chicago | 2 | 30G | No |
| Equinix New York | 2 | 200G | No |
| NYIIX New York | 2 | 400G | No |
| Facility | City | Country |
|---|---|---|
| 60 Hudson | New York | US |
| Equinix CH1/CH2/CH4 - Chicago | Chicago | US |
| Equinix DC1-DC15,DC21-DC22 - Ashburn | Ashburn | US |
| Equinix NY1 - New York, Newark | Newark | US |
| Equinix NY9 - New York, 111 8th Avenue | New York | US |
More about AS6128
Sources: RIR delegation data and PeeringDB (updated daily); routing from RIPEstat (RIPE NCC RIS and RPKI), refreshed daily. Routing data from 2026-11-13 21:58 UTC. The country is where the AS number was registered, not necessarily where the network operates.