Cablevision Systems Corp.

Data as of 2026-09-06
BGP inherited
Complete entity footprint
5 linked clusters · 413 netblocks · 5,321,335 IPv4 addresses · 25 IPv6 prefixes
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.
This organisation
Netblocks123 · 5,224,455 IPv4 addresses
IPv6 18 prefixes (largest 2600:4800::/28)
Registered in United States (105) · Philippines (4)
Also registered under this name 133 netblocks across 2 separate records
Record ID240791631
RegistryAPNIC
Customerssee who runs inside 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 · report an issue

IP Ranges (123)

⬇ 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
68.192.0.0/13 Cablevision Systems Corp. BGP ANNOUNCED ● high
68.192.0.0/14 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
69.120.0.0/13 Cablevision Systems Corp. BGP ANNOUNCED ● high
69.120.0.0/14 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
103.148.60.0/24 Cablevision Systems Corporation APNIC ALLOCATED PORTABLE ● 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
108.58.0.0/16 Cablevision Systems Corp. BGP ANNOUNCED ● high
108.162.0.0/18 Cablevision Systems Corp. BGP ANNOUNCED ● high
108.170.64.0/18 Cablevision Systems Corp. BGP ANNOUNCED ● high
108.179.0.0/18 Cablevision Systems Corp. BGP ANNOUNCED ● high
142.54.64.0/18 Cablevision Systems Corp. BGP ANNOUNCED ● high
144.62.128.0/17 Cablevision Systems Corp. BGP ANNOUNCED ● high
148.74.0.0/15 Cablevision Systems Corp. BGP ANNOUNCED ● high
148.76.0.0/18 Cablevision Systems Corp. BGP ANNOUNCED ● high
148.76.192.0/19 Cablevision Systems Corp. BGP ANNOUNCED ● high
148.76.224.0/19 Cablevision Systems Corp. BGP ANNOUNCED ● high
148.77.128.0/17 Cablevision Systems Corp. BGP ANNOUNCED ● high
162.216.56.0/21 Cablevision Systems Corp. BGP ANNOUNCED ● high
167.206.0.0/16 Cablevision Systems Corp. BGP ANNOUNCED ● high
167.206.0.0/19 Cablevision Systems Corp. BGP ANNOUNCED ● high
167.206.32.0/21 Cablevision Systems Corp. BGP ANNOUNCED ● high
167.206.40.0/22 Cablevision Systems Corp. BGP ANNOUNCED ● high
167.206.44.0/24 Cablevision Systems Corp. BGP ANNOUNCED ● high
167.206.45.0/24 Cablevision Systems Corp. BGP ANNOUNCED ● high
167.206.46.0/23 Cablevision Systems Corp. BGP ANNOUNCED ● high
167.206.48.0/20 Cablevision Systems Corp. BGP ANNOUNCED ● high
167.206.64.0/19 Cablevision Systems Corp. BGP ANNOUNCED ● high
167.206.96.0/20 Cablevision Systems Corp. BGP ANNOUNCED ● high
167.206.112.0/22 Cablevision Systems Corp. BGP ANNOUNCED ● high
167.206.113.0/24 Cablevision Systems Corp. BGP ANNOUNCED ● high
167.206.116.0/23 Cablevision Systems Corp. BGP ANNOUNCED ● high
167.206.119.0/24 Cablevision Systems Corp. BGP ANNOUNCED ● high
167.206.120.0/24 Cablevision Systems Corp. BGP ANNOUNCED ● high
167.206.121.0/24 Cablevision Systems Corp. BGP ANNOUNCED ● high
167.206.122.0/24 Cablevision Systems Corp. BGP ANNOUNCED ● high
167.206.123.0/24 Cablevision Systems Corp. BGP ANNOUNCED ● high
167.206.124.0/22 Cablevision Systems Corp. BGP ANNOUNCED ● high
167.206.128.0/17 Cablevision Systems Corp. BGP ANNOUNCED ● high
173.2.0.0/15 Cablevision Systems Corp. BGP ANNOUNCED ● high
173.220.0.0/16 Cablevision Systems Corp. BGP ANNOUNCED ● high
173.229.64.0/18 Cablevision Systems Corp. BGP ANNOUNCED ● high
173.251.0.0/17 Cablevision Systems Corp. BGP ANNOUNCED ● high
174.44.0.0/16 Cablevision Systems Corp. BGP ANNOUNCED ● high
192.208.120.0/21 Cablevision Systems Corp. BGP ANNOUNCED ● high
198.32.118.17/32 Cablevision Systems Corporation PEERINGDB ASSIGNED ● high
198.32.118.117/32 Cablevision Systems Corporation PEERINGDB ASSIGNED ● high
198.32.160.186/32 Cablevision Systems Corporation PEERINGDB ASSIGNED ● high
198.32.161.186/32 Cablevision Systems Corporation PEERINGDB ASSIGNED ● high
198.46.96.0/19 Cablevision Systems Corp. BGP ANNOUNCED ● high
198.182.247.0/24 Cablevision Systems Corp. BGP ANNOUNCED ● high
206.126.236.150/32 Cablevision Systems Corporation PEERINGDB ASSIGNED ● high
208.115.136.13/32 Cablevision Systems Corporation PEERINGDB ASSIGNED ● high
208.115.136.56/32 Cablevision Systems Corporation PEERINGDB ASSIGNED ● high
209.140.32.0/19 Cablevision Systems Corp. BGP ANNOUNCED ● high
216.2.192.0/22 Cablevision Systems Corp. ARIN ALLOCATION ● high
216.2.193.0/24 Cablevision Systems Corp. BGP ANNOUNCED ● high
216.2.194.0/24 Cablevision Systems Corp. BGP ANNOUNCED ● high
216.2.195.0/24 Cablevision Systems Corp. BGP ANNOUNCED ● high
216.255.96.0/19 Cablevision Systems Corp. BGP ANNOUNCED ● high
2001:504:0:2::6128:1/128 Cablevision Systems Corporation PEERINGDB ASSIGNED ● high
2001:504:0:4::6128:1/128 Cablevision Systems Corporation PEERINGDB ASSIGNED ● high
2001:504:0:4::6128:2/128 Cablevision Systems Corporation PEERINGDB ASSIGNED ● high
2001:504:1::a500:6128:3/128 Cablevision Systems Corporation PEERINGDB ASSIGNED ● high
2001:504:1::a500:6128:4/128 Cablevision Systems Corporation PEERINGDB ASSIGNED ● high
2001:504:f::11/128 Cablevision Systems Corporation PEERINGDB ASSIGNED ● high
2001:504:f::75/128 Cablevision Systems Corporation PEERINGDB ASSIGNED ● high
2001:df7:8100::/48 Cablevision Systems Corporation BGP ANNOUNCED ● high
2600:4800::/30 Cablevision Systems Corp. BGP ANNOUNCED ● high
2600:4800::/28 Cablevision Systems Corp. BGP ANNOUNCED ● high
2600:4804::/30 Cablevision Systems Corp. BGP ANNOUNCED ● high
2600:4808::/32 Cablevision Systems Corp. BGP ANNOUNCED ● high
2600:4808::/30 Cablevision Systems Corp. BGP ANNOUNCED ● high
2600:4809::/32 Cablevision Systems Corp. BGP ANNOUNCED ● high
2600:480a::/32 Cablevision Systems Corp. BGP ANNOUNCED ● high
2600:480b::/32 Cablevision Systems Corp. BGP ANNOUNCED ● high
2600:480c::/30 Cablevision Systems Corp. BGP ANNOUNCED ● high
2602:230::/32 Cablevision Systems Corp. BGP ANNOUNCED ● high
47.19.0.0/16 Cablevision Systems Corp. ARIN ALLOCATION ● low
65.51.0.0/16 Cablevision Systems Corp. ARIN DIRECT ALLOCATION ● low
69.74.0.0/16 Cablevision Systems Corp. ARIN DIRECT ALLOCATION ● low
148.77.0.0/17 Cablevision Systems Corp. ARIN ALLOCATION ● low

IPv6 ranges (18)

showing the 15 largest allocations
CIDR
2600:4800::/28
2600:4800::/30
2600:4804::/30
2600:4808::/30
2600:480c::/30
2600:4808::/32
2600:4809::/32
2600:480a::/32
2600:480b::/32
2602:230::/32
2001:df7:8100::/48
2001:504:0:2::6128:1/128
2001:504:0:4::6128:1/128
2001:504:0:4::6128:2/128
2001:504:1::a500:6128:3/128

Footprint over time

11 weekly snapshots · JSON
129 +9 netblocks since 2026-07-05
2026-07-05 peak 129 2026-09-06

Domains hosted in this network

what's this?
nsn-now.com napconoc2.com napconoc3.com montefiore.org wiltonlibrary.org lightpath.net nybg.org christies.com wakefern.com

Customer-delegated space

how is this classified?
Unclassified 79 (64.2%)
Customer access pools 36 (29.3%)
Operator infrastructure (named) 14 (11.4%)

Network trust

what's this?
RPKI hygiene: C how networks compare →
72.9% of checked blocks have valid RPKI ROA coverage (94 of 129)
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