OPTO-TECH GRZEGORZ WROBLEWSKI
Opto-tech
BGP inherited
Cluster stats
| Netblocks | 9 |
| All fragments | 17 blocks across 2 clusters |
| Cluster ID | 192639198 |
| Registry | RIPE |
| Customers | find customers using this network → |
Evidence & provenance ?
| Attribution | BGP parent (inherited) |
| Shared handles | clustered on 4 shared RIR contact/maintainer handles |
| Registry names | 2 distinct registrant names across these blocks |
| full provenance (JSON) → · how attribution works | |
Footprint over time
2 weekly snapshots · JSON
9
0 netblocks since 2026-07-05
2026-07-05
peak 9
2026-07-06
IP Ranges (9)
⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 212.14.48.0/24 | Opto-tech | RIPE | SUB-ALLOCATED PA | ● low |
| 212.14.54.0/24 | Opto-tech | RIPE | SUB-ALLOCATED PA | ● low |
| 212.14.59.0/24 | Opto-tech | RIPE | SUB-ALLOCATED PA | ● low |
| 213.77.122.0/24 | OPTO-TECH | RIPE | ASSIGNED PA | ● low |
| 213.155.169.0/24 | Opto-tech | RIPE | ASSIGNED PA | ● low |
| 213.155.170.0/23 | Opto-tech | RIPE | SUB-ALLOCATED PA | ● low |
| 213.155.172.0/24 | Opto-tech | RIPE | ASSIGNED PA | ● low |
| 213.155.177.0/24 | Opto-tech | RIPE | SUB-ALLOCATED PA | ● low |
| 213.155.181.0/24 | Opto-tech | RIPE | ASSIGNED PA | ● low |
Network trust
what's this?
RPKI hygiene: A
how networks compare →
100.0%
of checked blocks have valid RPKI ROA coverage
(9 of 9)
Possible discrepancies (1)
These blocks are registered to Opto-tech 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.
| 213.77.122.0/24 /24 | authorized for AS5617 — Orange Polska Spolka Akcyjna |
NIC Handles
ACI-MNT-POLAND
DUMY-RIPE
DUMY-RIPE
TPNET