Optimum Online
Data as of 2026-08-09
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.
Cluster stats
| Netblocks | 107 · 4,051,712 IPv4 addresses |
| IPv6 | 3 prefixes (largest 2600:4800::/28) |
| All fragments | 139 blocks across 2 clusters |
| Cluster ID | 218143663 |
| Registry | BGP |
| Customers | find customers using this network → |
Evidence & provenance ?
| Attribution | BGP parent (inherited) |
| Shared handles | clustered on 7 shared RIR contact/maintainer handles |
| Registry names | 2 distinct registrant names across these blocks |
| full provenance (JSON) → · how attribution works · report an issue | |
Footprint over time
7 weekly snapshots · JSON
116
+33 netblocks since 2026-07-05
2026-07-05
peak 116
2026-08-09
IP Ranges (107)
showing 50 of 107 — see all — ⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 24.246.128.0/18 | Optimum Online | BGP | ANNOUNCED | ● high |
| 24.246.129.0/24 | Optimum Online | BGP | ANNOUNCED | ● high |
| 24.246.130.0/24 | Optimum Online | BGP | ANNOUNCED | ● high |
| 24.246.132.0/23 | Optimum Online | BGP | ANNOUNCED | ● high |
| 24.246.134.0/24 | Optimum Online | BGP | ANNOUNCED | ● high |
| 24.246.136.0/22 | Optimum Online | BGP | ANNOUNCED | ● high |
| 24.246.140.0/22 | Optimum Online | BGP | ANNOUNCED | ● high |
| 24.246.144.0/23 | Optimum Online | BGP | ANNOUNCED | ● high |
| 24.246.146.0/23 | Optimum Online | BGP | ANNOUNCED | ● high |
| 24.246.148.0/24 | Optimum Online | BGP | ANNOUNCED | ● high |
| 24.246.149.0/24 | Optimum Online | BGP | ANNOUNCED | ● high |
| 24.246.150.0/24 | Optimum Online | BGP | ANNOUNCED | ● high |
| 24.246.152.0/24 | Optimum Online | BGP | ANNOUNCED | ● high |
| 24.246.153.0/24 | Optimum Online | BGP | ANNOUNCED | ● high |
| 24.246.154.0/24 | Optimum Online | BGP | ANNOUNCED | ● high |
| 24.246.155.0/24 | Optimum Online | BGP | ANNOUNCED | ● high |
| 24.246.156.0/23 | Optimum Online | BGP | ANNOUNCED | ● high |
| 24.246.158.0/24 | Optimum Online | BGP | ANNOUNCED | ● high |
| 24.246.159.0/24 | Optimum Online | BGP | ANNOUNCED | ● high |
| 24.246.160.0/20 | Optimum Online | BGP | ANNOUNCED | ● high |
| 24.246.176.0/22 | Optimum Online | BGP | ANNOUNCED | ● high |
| 24.246.180.0/22 | Optimum Online | BGP | ANNOUNCED | ● high |
| 24.246.184.0/22 | Optimum Online | BGP | ANNOUNCED | ● high |
| 24.246.188.0/23 | Optimum Online | BGP | ANNOUNCED | ● high |
| 24.246.190.0/24 | Optimum Online | BGP | ANNOUNCED | ● high |
| 24.246.191.0/24 | Optimum Online | BGP | ANNOUNCED | ● high |
| 63.143.128.0/20 | Optimum Online | BGP | ANNOUNCED | ● high |
| 63.143.128.0/17 | Optimum Online | BGP | ANNOUNCED | ● high |
| 63.143.144.0/22 | Optimum Online | BGP | ANNOUNCED | ● high |
| 63.143.148.0/24 | Optimum Online | BGP | ANNOUNCED | ● high |
| 63.143.149.0/24 | Optimum Online | BGP | ANNOUNCED | ● high |
| 63.143.150.0/23 | Optimum Online | BGP | ANNOUNCED | ● high |
| 63.143.152.0/22 | Optimum Online | BGP | ANNOUNCED | ● high |
| 63.143.159.0/24 | Optimum Online | BGP | ANNOUNCED | ● high |
| 63.143.160.0/20 | Optimum Online | BGP | ANNOUNCED | ● high |
| 63.143.176.0/20 | Optimum Online | BGP | ANNOUNCED | ● high |
| 63.143.192.0/20 | Optimum Online | BGP | ANNOUNCED | ● high |
| 63.143.208.0/22 | Optimum Online | BGP | ANNOUNCED | ● high |
| 64.127.208.0/20 | Optimum Online | BGP | ANNOUNCED | ● high |
| 64.127.208.0/24 | Optimum Online | BGP | ANNOUNCED | ● high |
| 64.127.209.0/24 | Optimum Online | BGP | ANNOUNCED | ● high |
| 64.127.210.0/24 | Optimum Online | BGP | ANNOUNCED | ● high |
| 64.127.211.0/24 | Optimum Online | BGP | ANNOUNCED | ● high |
| 64.127.212.0/24 | Optimum Online | BGP | ANNOUNCED | ● high |
| 64.127.215.0/24 | Optimum Online | BGP | ANNOUNCED | ● high |
| 64.127.216.0/24 | Optimum Online | BGP | ANNOUNCED | ● high |
| 64.127.217.0/24 | Optimum Online | BGP | ANNOUNCED | ● high |
| 64.127.218.0/24 | Optimum Online | BGP | ANNOUNCED | ● high |
| 64.127.219.0/24 | Optimum Online | BGP | ANNOUNCED | ● high |
| 64.127.222.0/24 | Optimum Online | BGP | ANNOUNCED | ● high |
IPv6 ranges (3)
Domains hosted in this network
what's this?Customer-delegated space
how is this classified?
Unclassified
90 (84.1%)
Customer access pools
26 (24.3%)
Network trust
what's this?
RPKI hygiene: A
how networks compare →
96.6%
of checked blocks have valid RPKI ROA coverage
(112 of 116)
Possible discrepancies (21)
These blocks are registered to Optimum Online but cryptographically authorized for a different, unrelated network (1 distinct holder) — often M&A history, multi-homing, or outsourced/managed hosting, occasionally worth a closer look.
| 2600:4800::/28 /28 | authorized for AS6128 — Cablevision Systems Corp. |
| 2001:48a0::/32 /32 | authorized for AS6128 — Cablevision Systems Corp. |
| 69.112.0.0/12 /12 | authorized for AS6128 — Cablevision Systems Corp. |
| 67.80.0.0/13 /13 | authorized for AS6128 — Cablevision Systems Corp. |
| 68.192.0.0/13 /13 | authorized for AS6128 — Cablevision Systems Corp. |
| 24.184.0.0/14 /14 | authorized for AS6128 — Cablevision Systems Corp. |
| 24.188.0.0/14 /14 | authorized for AS6128 — Cablevision Systems Corp. |
| 24.44.0.0/14 /14 | authorized for AS6128 — Cablevision Systems Corp. |
| 47.20.0.0/14 /14 | authorized for AS6128 — Cablevision Systems Corp. |
| 173.2.0.0/15 /15 | authorized for AS6128 — Cablevision Systems Corp. |
| 174.44.0.0/16 /16 | authorized for AS6128 — Cablevision Systems Corp. |
| 24.228.0.0/16 /16 | authorized for AS6128 — Cablevision Systems Corp. |
| 144.62.128.0/17 /17 | authorized for AS6128 — Cablevision Systems Corp. |
| 104.148.128.0/17 /17 | authorized for AS6128 — Cablevision Systems Corp. |
| 104.246.0.0/17 /17 | authorized for AS6128 — Cablevision Systems Corp. |
+6 more — see the REST API
NIC Handles
AS53488
C09025123
C10852773
OH4-ORG-ARIN
OH4-ORG-ARIN
OH4-ORG-ARIN
OPTO