Cablevision Systems Corp.

BGP inherited
Complete entity footprint
3 linked clusters · 538 netblocks · 8,009,833 IPv4 addresses
This organisation's clusters combined by evidence — shared operating domain optonline.net — not name similarity, so genuinely different organisations that share a name are excluded.
View the full entity page →
Cluster stats
Netblocks123 · 7,519,903 IPv4 addresses
Registered in United States (100) · Philippines (4)
All fragments 127 blocks across 2 clusters
Cluster ID208785935
RegistryAPNIC
Customersfind customers using this network →
Evidence & provenance ?
Attribution BGP parent (inherited)
Shared handles clustered on 13 shared RIR contact/maintainer handles
Registry names 5 distinct registrant names across these blocks
full provenance (JSON) → · how attribution works

Footprint over time

5 weekly snapshots · JSON
122 +2 netblocks since 2026-07-05
2026-07-05 peak 122 2026-07-19

IP Ranges (123)

showing 50 of 123 — see all — ⬇ export CSV
CIDR Org name Registry Status Confidence
24.38.0.0/17 Cablevision Systems Corp. BGP ANNOUNCED ● high
24.38.192.0/18 Cablevision Systems Corp. BGP ANNOUNCED ● high
24.44.0.0/14 Cablevision Systems Corp. BGP ANNOUNCED ● high
24.89.128.0/18 Cablevision Systems Corp. BGP ANNOUNCED ● high
24.146.128.0/17 Cablevision Systems Corp. BGP ANNOUNCED ● high
24.157.32.0/19 Cablevision Systems Corp. BGP ANNOUNCED ● high
24.157.51.0/24 Cablevision Systems Corp. BGP ANNOUNCED ● high
24.184.0.0/14 Cablevision Systems Corp. BGP ANNOUNCED ● high
24.188.0.0/14 Cablevision Systems Corp. BGP ANNOUNCED ● high
24.189.218.0/24 Cablevision Systems Corp. BGP ANNOUNCED ● high
24.228.0.0/16 Cablevision Systems Corp. BGP ANNOUNCED ● high
24.246.96.0/19 Cablevision Systems Corp. BGP ANNOUNCED ● high
47.16.0.0/14 Cablevision Systems Corp. BGP ANNOUNCED ● high
47.16.0.0/15 Cablevision Systems Corp. BGP ANNOUNCED ● high
47.18.0.0/16 Cablevision Systems Corp. BGP ANNOUNCED ● high
47.20.0.0/14 Cablevision Systems Corp. BGP ANNOUNCED ● high
50.29.0.0/17 Cablevision Systems Corp. BGP ANNOUNCED ● high
63.142.20.0/24 Cablevision Systems Corp. BGP ANNOUNCED ● high
63.247.160.0/19 Cablevision Systems Corp. BGP ANNOUNCED ● high
64.15.0.0/16 Cablevision Systems Corp. BGP ANNOUNCED ● high
65.19.0.0/16 Cablevision Systems Corp. BGP ANNOUNCED ● high
65.51.29.0/24 Cablevision Systems Corp. BGP ANNOUNCED ● high
65.51.31.0/24 Cablevision Systems Corp. BGP ANNOUNCED ● high
67.80.0.0/13 Cablevision Systems Corp. BGP ANNOUNCED ● high
67.80.0.0/14 Cablevision Systems Corp. BGP ANNOUNCED ● high
67.84.0.0/14 Cablevision Systems Corp. BGP ANNOUNCED ● high
68.192.0.0/14 Cablevision Systems Corp. BGP ANNOUNCED ● high
68.192.0.0/13 Cablevision Systems Corp. BGP ANNOUNCED ● high
68.196.0.0/14 Cablevision Systems Corp. BGP ANNOUNCED ● high
69.27.224.0/19 Cablevision Systems Corp. BGP ANNOUNCED ● high
69.27.228.0/24 Cablevision Systems Corp. BGP ANNOUNCED ● high
69.112.0.0/14 Cablevision Systems Corp. BGP ANNOUNCED ● high
69.112.0.0/13 Cablevision Systems Corp. BGP ANNOUNCED ● high
69.116.0.0/14 Cablevision Systems Corp. BGP ANNOUNCED ● high
69.120.0.0/14 Cablevision Systems Corp. BGP ANNOUNCED ● high
69.120.0.0/13 Cablevision Systems Corp. BGP ANNOUNCED ● high
69.124.0.0/14 Cablevision Systems Corp. BGP ANNOUNCED ● high
74.88.0.0/15 Cablevision Systems Corp. BGP ANNOUNCED ● high
74.89.0.0/24 Cablevision Systems Corp. BGP ANNOUNCED ● high
74.90.0.0/16 Cablevision Systems Corp. BGP ANNOUNCED ● high
75.99.0.0/16 Cablevision Systems Corp. BGP ANNOUNCED ● high
75.127.128.0/17 Cablevision Systems Corp. BGP ANNOUNCED ● high
96.56.0.0/15 Cablevision Systems Corp. BGP ANNOUNCED ● high
103.132.168.0/24 Cablevision Systems Corporation BGP ANNOUNCED ● high
103.132.168.0/24 Cablevision Systems Corporation APNIC ASSIGNED PORTABLE ● high
103.148.60.0/24 Cablevision Systems Corporation APNIC ALLOCATED PORTABLE ● high
103.148.60.0/24 Cablevision Systems Corporation BGP ANNOUNCED ● high
104.148.128.0/17 Cablevision Systems Corp. BGP ANNOUNCED ● high
104.246.0.0/17 Cablevision Systems Corp. BGP ANNOUNCED ● high
107.188.0.0/17 Cablevision Systems Corp. BGP ANNOUNCED ● high

Domains hosted in this network

what's this?
optonline.net optimum.net suddenlink.net nsn-now.com napconoc2.com googlevideo.com napconoc3.com gladns.com cv.net gladns.net greenmountainaccess.net montefiore.org 3gppnetwork.org christies.com wakefern.com mycasebook.org gvt1.com

Customer-delegated space

how is this classified?
Unclassified 74 (60.2%)
Customer access pools 35 (28.5%)
Operator infrastructure (named) 14 (11.4%)

Network trust

what's this?
RPKI hygiene: C how networks compare →
72.4% of checked blocks have valid RPKI ROA coverage (89 of 123)
No discrepancies found among checked blocks.

NIC Handles

AC1827-AP APNIC-HM AS138543 AS19720 AS6128 AS6128 CIO1-ARIN CSCA3-AP CSCA3-AP CVNT OH4-ORG-ARIN OOLAB-ARIN +1 more