Optical Structural Network Ltd.
Data as of 2026-07-26
BGP inherited
Cluster stats
| Netblocks | 57 · 22,784 IPv4 addresses |
| IPv6 | 1 prefix (largest 2a00:2381:c68f::/48) |
| Cluster ID | 213420984 |
| Registry | BGP |
| Customers | find customers using this network → |
Evidence & provenance ?
| Attribution | BGP parent (inherited) |
| Shared handles | clustered on 9 shared RIR contact/maintainer handles |
| Registry names | 3 distinct registrant names across these blocks |
| full provenance (JSON) → · how attribution works · report an issue | |
Footprint over time
6 weekly snapshots · JSON
58
-1 netblocks since 2026-07-05
2026-07-05
peak 59
2026-07-26
IP Ranges (57)
showing 50 of 57 — see all — ⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 31.193.189.0/24 | Optical Structural Network Ltd. | BGP | ANNOUNCED | ● high |
| 62.192.132.0/24 | Optical Structural Network Ltd. | BGP | ANNOUNCED | ● high |
| 62.192.133.0/24 | Optical Structural Network Ltd. | BGP | ANNOUNCED | ● high |
| 77.78.128.0/24 | Optical Structural Network Ltd. | BGP | ANNOUNCED | ● high |
| 77.78.129.0/24 | Optical Structural Network Ltd. | BGP | ANNOUNCED | ● high |
| 77.78.131.0/24 | Optical Structural Network Ltd. | BGP | ANNOUNCED | ● high |
| 77.78.132.0/24 | Optical Structural Network Ltd. | BGP | ANNOUNCED | ● high |
| 77.78.133.0/24 | Optical Structural Network Ltd. | BGP | ANNOUNCED | ● high |
| 77.78.134.0/24 | Optical Structural Network Ltd. | BGP | ANNOUNCED | ● high |
| 77.78.135.0/24 | Optical Structural Network Ltd. | BGP | ANNOUNCED | ● high |
| 77.78.136.0/24 | Optical Structural Network Ltd. | BGP | ANNOUNCED | ● high |
| 77.78.137.0/24 | Optical Structural Network Ltd. | BGP | ANNOUNCED | ● high |
| 77.78.138.0/24 | Optical Structural Network Ltd. | BGP | ANNOUNCED | ● high |
| 77.78.139.0/24 | Optical Structural Network Ltd. | BGP | ANNOUNCED | ● high |
| 77.78.140.0/24 | Optical Structural Network Ltd. | BGP | ANNOUNCED | ● high |
| 77.78.141.0/24 | Optical Structural Network Ltd. | BGP | ANNOUNCED | ● high |
| 77.78.142.0/24 | Optical Structural Network Ltd. | BGP | ANNOUNCED | ● high |
| 77.78.143.0/24 | Optical Structural Network Ltd. | BGP | ANNOUNCED | ● high |
| 85.187.204.0/24 | Optical Structural Network Ltd. | BGP | ANNOUNCED | ● high |
| 85.187.205.0/24 | Optical Structural Network Ltd. | BGP | ANNOUNCED | ● high |
| 109.121.129.0/24 | Optical Structural Network Ltd. | BGP | ANNOUNCED | ● high |
| 109.121.130.0/24 | Optical Structural Network Ltd. | BGP | ANNOUNCED | ● high |
| 109.121.131.0/24 | Optical Structural Network Ltd. | BGP | ANNOUNCED | ● high |
| 109.121.132.0/24 | Optical Structural Network Ltd. | BGP | ANNOUNCED | ● high |
| 109.121.148.0/24 | Optical Structural Network Ltd. | BGP | ANNOUNCED | ● high |
| 109.121.149.0/24 | Optical Structural Network Ltd. | BGP | ANNOUNCED | ● high |
| 109.121.150.0/24 | Optical Structural Network Ltd. | BGP | ANNOUNCED | ● high |
| 109.121.151.0/24 | Optical Structural Network Ltd. | BGP | ANNOUNCED | ● high |
| 109.121.154.0/24 | Optical Structural Network Ltd. | BGP | ANNOUNCED | ● high |
| 109.121.155.0/24 | Optical Structural Network Ltd. | BGP | ANNOUNCED | ● high |
| 109.121.156.0/24 | Optical Structural Network Ltd. | BGP | ANNOUNCED | ● high |
| 109.121.157.0/24 | Optical Structural Network Ltd. | BGP | ANNOUNCED | ● high |
| 109.121.158.0/24 | Optical Structural Network Ltd. | BGP | ANNOUNCED | ● high |
| 109.121.164.0/24 | Optical Structural Network Ltd. | BGP | ANNOUNCED | ● high |
| 109.121.165.0/24 | Optical Structural Network Ltd. | BGP | ANNOUNCED | ● high |
| 109.121.167.0/24 | Optical Structural Network Ltd. | BGP | ANNOUNCED | ● high |
| 109.121.168.0/24 | Optical Structural Network Ltd. | BGP | ANNOUNCED | ● high |
| 109.121.169.0/24 | Optical Structural Network Ltd. | BGP | ANNOUNCED | ● high |
| 109.121.170.0/24 | Optical Structural Network Ltd. | BGP | ANNOUNCED | ● high |
| 109.121.171.0/24 | Optical Structural Network Ltd. | BGP | ANNOUNCED | ● high |
| 109.121.176.0/24 | Optical Structural Network Ltd. | BGP | ANNOUNCED | ● high |
| 109.121.177.0/24 | Optical Structural Network Ltd. | BGP | ANNOUNCED | ● high |
| 109.121.178.0/24 | Optical Structural Network Ltd. | BGP | ANNOUNCED | ● high |
| 109.121.179.0/24 | Optical Structural Network Ltd. | BGP | ANNOUNCED | ● high |
| 109.121.184.0/24 | Optical Structural Network Ltd. | BGP | ANNOUNCED | ● high |
| 109.121.185.0/24 | Optical Structural Network Ltd. | BGP | ANNOUNCED | ● high |
| 109.121.186.0/24 | Optical Structural Network Ltd. | BGP | ANNOUNCED | ● high |
| 109.121.187.0/24 | Optical Structural Network Ltd. | BGP | ANNOUNCED | ● high |
| 109.121.188.0/24 | Optical Structural Network Ltd. | BGP | ANNOUNCED | ● high |
| 109.121.189.0/24 | Optical Structural Network Ltd. | BGP | ANNOUNCED | ● high |
IPv6 ranges (1)
| CIDR |
|---|
| 2a00:2381:c68f::/48 |
Network trust
what's this?
RPKI hygiene: B
how networks compare →
89.7%
of checked blocks have valid RPKI ROA coverage
(52 of 58)
Possible discrepancies (2)
These blocks are registered to Optical Structural Network Ltd. but cryptographically authorized for a different, unrelated network (2 distinct holders) — often M&A history, multi-homing, or outsourced/managed hosting, occasionally worth a closer look.
| 2a00:2381:c68f::/48 /48 | authorized for AS2856 — British Telecommunications Limited |
| 77.78.148.0/23 /23 | authorized for AS62323 — DragoNET - Lyuba Pesheva |
NIC Handles
AS39246
BTNET-MNT
DUMY-RIPE
DUMY-RIPE
IPACCT-MNT
IPACCT-MNT
LULIN-NET-MNT
ORG-OSNL4-RIPE
RIPE-NCC-HM-MNT