Optimum Online

Data as of 2026-09-13
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.
View the full entity page →
This organisation
Netblocks107 · 4,051,712 IPv4 addresses
IPv6 3 prefixes (largest 2600:4800::/28)
Also registered under this name 139 netblocks across 2 separate records
Record ID241133263
RegistryBGP
Customerssee who runs inside 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

IP Ranges (107)

⬇ 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
63.143.128.0/17 Optimum Online ARIN ASSIGNMENT ● high
63.143.128.0/20 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
64.127.223.0/24 Optimum Online BGP ANNOUNCED ● high
173.246.192.0/19 Optimum Online BGP ANNOUNCED ● high
173.246.192.0/20 Optimum Online BGP ANNOUNCED ● high
173.246.200.0/22 Optimum Online BGP ANNOUNCED ● high
173.246.204.0/22 Optimum Online BGP ANNOUNCED ● high
173.246.208.0/21 Optimum Online BGP ANNOUNCED ● high
173.246.208.0/22 Optimum Online BGP ANNOUNCED ● high
173.246.212.0/23 Optimum Online BGP ANNOUNCED ● high
173.246.214.0/23 Optimum Online BGP ANNOUNCED ● high
173.246.216.0/23 Optimum Online BGP ANNOUNCED ● high
173.246.216.0/24 Optimum Online BGP ANNOUNCED ● high
173.246.217.0/24 Optimum Online BGP ANNOUNCED ● high
173.246.222.0/23 Optimum Online BGP ANNOUNCED ● high
173.246.223.0/24 Optimum Online BGP ANNOUNCED ● high
198.185.218.0/23 Optimum Online BGP ANNOUNCED ● high
205.236.71.0/24 Optimum Online BGP ANNOUNCED ● high
216.116.224.0/21 Optimum Online BGP ANNOUNCED ● high
216.116.224.0/19 Optimum Online BGP ANNOUNCED ● high
216.116.232.0/21 Optimum Online BGP ANNOUNCED ● high
216.116.240.0/23 Optimum Online BGP ANNOUNCED ● high
216.116.242.0/24 Optimum Online BGP ANNOUNCED ● high
216.116.243.0/24 Optimum Online BGP ANNOUNCED ● high
216.116.244.0/24 Optimum Online BGP ANNOUNCED ● high
216.116.245.0/24 Optimum Online BGP ANNOUNCED ● high
216.116.246.0/23 Optimum Online BGP ANNOUNCED ● high
216.116.248.0/24 Optimum Online BGP ANNOUNCED ● high
216.116.249.0/24 Optimum Online BGP ANNOUNCED ● high
216.116.250.0/24 Optimum Online BGP ANNOUNCED ● high
216.116.251.0/24 Optimum Online BGP ANNOUNCED ● high
216.116.252.0/24 Optimum Online BGP ANNOUNCED ● high
216.116.253.0/24 Optimum Online BGP ANNOUNCED ● high
216.116.254.0/24 Optimum Online BGP ANNOUNCED ● high
216.116.255.0/24 Optimum Online BGP ANNOUNCED ● high
24.38.192.0/18 Optimum Online ARIN DIRECT ALLOCATION ● medium
24.44.0.0/14 Optimum Online ARIN DIRECT ALLOCATION ● medium
24.146.128.0/17 Optimum Online ARIN DIRECT ALLOCATION ● medium
24.184.0.0/14 Optimum Online ARIN DIRECT ALLOCATION ● medium
24.188.0.0/14 Optimum Online ARIN DIRECT ALLOCATION ● medium
24.228.0.0/16 Optimum Online ARIN DIRECT ALLOCATION ● medium
47.20.0.0/14 Optimum Online ARIN DIRECT ALLOCATION ● medium
67.80.0.0/13 Optimum Online ARIN DIRECT ALLOCATION ● medium
68.192.0.0/13 Optimum Online ARIN DIRECT ALLOCATION ● medium
69.112.0.0/12 Optimum Online ARIN DIRECT ALLOCATION ● medium
74.88.0.0 – 74.90.255.255 Optimum Online ARIN DIRECT ALLOCATION ● medium
104.148.128.0/17 Optimum Online ARIN DIRECT ALLOCATION ● medium
104.246.0.0/17 Optimum Online ARIN DIRECT ALLOCATION ● medium
107.188.0.0/17 Optimum Online ARIN ALLOCATION ● medium
144.62.128.0/17 Optimum Online ARIN DIRECT ALLOCATION ● medium
148.74.0.0 – 148.76.63.255 Optimum Online ARIN DIRECT ALLOCATION ● medium
148.76.192.0/19 Optimum Online ARIN DIRECT ALLOCATION ● medium
148.76.224.0/19 Optimum Online ARIN DIRECT ALLOCATION ● medium
148.77.128.0/17 Optimum Online ARIN DIRECT ALLOCATION ● medium
173.2.0.0/15 Optimum Online ARIN DIRECT ALLOCATION ● medium
174.44.0.0/16 Optimum Online ARIN DIRECT ALLOCATION ● medium
2001:48a0::/32 Optimum Online ARIN DIRECT ALLOCATION ● medium
2600:4800::/28 Optimum Online ARIN DIRECT ALLOCATION ● medium
2607:ce00::/32 Optimum Online ARIN DIRECT ALLOCATION ● medium

IPv6 ranges (3)

CIDR
2600:4800::/28
2001:48a0::/32
2607:ce00::/32

Footprint over time

12 weekly snapshots · JSON
116 +33 netblocks since 2026-07-05
2026-07-05 peak 116 2026-09-13

Domains hosted in this network

what's this?
gladns.com gladns.net auralmoon.com vollink.com vollink.nyc tmesis.com mycasebook.org googlevideo.com

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