OPTIKA-CLULOW-GROUP
Cluster stats
| Netblocks | 73 |
| All fragments | 91 blocks across 8 clusters |
| Cluster ID | 191676819 |
| Registry | RIPE |
| Customers | find customers using this network → |
Evidence & provenance ?
| Attribution | unresolved |
| Shared handles | clustered on 3 shared RIR contact/maintainer handles |
| Registry names | 1 distinct registrant name across these blocks |
| full provenance (JSON) → · how attribution works | |
Footprint over time
2 weekly snapshots · JSON
73
0 netblocks since 2026-07-05
2026-07-05
peak 73
2026-07-06
IP Ranges (73)
showing 50 of 73 — see all — ⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 81.2.68.72/29 | OPTIKA-CLULOW-GROUP | RIPE | ASSIGNED PA | ● low |
| 81.2.70.30/32 | OPTIKA-CLULOW-GROUP | RIPE | ASSIGNED PA | ● low |
| 81.2.81.72/30 | OPTIKA-CLULOW-GROUP | RIPE | ASSIGNED PA | ● low |
| 81.2.86.131/32 | OPTIKA-CLULOW-GROUP | RIPE | ASSIGNED PA | ● low |
| 81.2.93.180/30 | OPTIKA-CLULOW-GROUP | RIPE | ASSIGNED PA | ● low |
| 81.2.100.185/32 | OPTIKA-CLULOW-GROUP | RIPE | ASSIGNED PA | ● low |
| 81.2.102.208/30 | OPTIKA-CLULOW-GROUP | RIPE | ASSIGNED PA | ● low |
| 81.2.103.244/30 | OPTIKA-CLULOW-GROUP | RIPE | ASSIGNED PA | ● low |
| 81.2.105.68/30 | OPTIKA-CLULOW-GROUP | RIPE | ASSIGNED PA | ● low |
| 81.2.107.224/29 | OPTIKA-CLULOW-GROUP | RIPE | ASSIGNED PA | ● low |
| 81.2.114.179/32 | OPTIKA-CLULOW-GROUP | RIPE | ASSIGNED PA | ● low |
| 81.2.116.112/30 | OPTIKA-CLULOW-GROUP | RIPE | ASSIGNED PA | ● low |
| 81.2.121.152/30 | OPTIKA-CLULOW-GROUP | RIPE | ASSIGNED PA | ● low |
| 81.187.0.96/30 | OPTIKA-CLULOW-GROUP | RIPE | ASSIGNED PA | ● low |
| 81.187.12.23/32 | OPTIKA-CLULOW-GROUP | RIPE | ASSIGNED PA | ● low |
| 81.187.20.103/32 | OPTIKA-CLULOW-GROUP | RIPE | ASSIGNED PA | ● low |
| 81.187.28.40/29 | OPTIKA-CLULOW-GROUP | RIPE | ASSIGNED PA | ● low |
| 81.187.29.228/30 | OPTIKA-CLULOW-GROUP | RIPE | ASSIGNED PA | ● low |
| 81.187.37.190/32 | OPTIKA-CLULOW-GROUP | RIPE | ASSIGNED PA | ● low |
| 81.187.39.65/32 | OPTIKA-CLULOW-GROUP | RIPE | ASSIGNED PA | ● low |
| 81.187.41.73/32 | OPTIKA-CLULOW-GROUP | RIPE | ASSIGNED PA | ● low |
| 81.187.45.16/29 | OPTIKA-CLULOW-GROUP | RIPE | ASSIGNED PA | ● low |
| 81.187.53.157/32 | OPTIKA-CLULOW-GROUP | RIPE | ASSIGNED PA | ● low |
| 81.187.55.152/32 | OPTIKA-CLULOW-GROUP | RIPE | ASSIGNED PA | ● low |
| 81.187.69.92/32 | OPTIKA-CLULOW-GROUP | RIPE | ASSIGNED PA | ● low |
| 81.187.69.93/32 | OPTIKA-CLULOW-GROUP | RIPE | ASSIGNED PA | ● low |
| 81.187.70.4/30 | OPTIKA-CLULOW-GROUP | RIPE | ASSIGNED PA | ● low |
| 81.187.71.52/30 | OPTIKA-CLULOW-GROUP | RIPE | ASSIGNED PA | ● low |
| 81.187.73.148/30 | OPTIKA-CLULOW-GROUP | RIPE | ASSIGNED PA | ● low |
| 81.187.73.153/32 | OPTIKA-CLULOW-GROUP | RIPE | ASSIGNED PA | ● low |
| 81.187.73.155/32 | OPTIKA-CLULOW-GROUP | RIPE | ASSIGNED PA | ● low |
| 81.187.77.145/32 | OPTIKA-CLULOW-GROUP | RIPE | ASSIGNED PA | ● low |
| 81.187.78.114/32 | OPTIKA-CLULOW-GROUP | RIPE | ASSIGNED PA | ● low |
| 81.187.87.151/32 | OPTIKA-CLULOW-GROUP | RIPE | ASSIGNED PA | ● low |
| 81.187.88.86/32 | OPTIKA-CLULOW-GROUP | RIPE | ASSIGNED PA | ● low |
| 81.187.93.236/32 | OPTIKA-CLULOW-GROUP | RIPE | ASSIGNED PA | ● low |
| 81.187.116.217/32 | OPTIKA-CLULOW-GROUP | RIPE | ASSIGNED PA | ● low |
| 81.187.118.84/30 | OPTIKA-CLULOW-GROUP | RIPE | ASSIGNED PA | ● low |
| 81.187.132.208/29 | OPTIKA-CLULOW-GROUP | RIPE | ASSIGNED PA | ● low |
| 81.187.135.104/29 | OPTIKA-CLULOW-GROUP | RIPE | ASSIGNED PA | ● low |
| 81.187.135.154/32 | OPTIKA-CLULOW-GROUP | RIPE | ASSIGNED PA | ● low |
| 81.187.141.192/28 | OPTIKA-CLULOW-GROUP | RIPE | ASSIGNED PA | ● low |
| 81.187.148.56/32 | OPTIKA-CLULOW-GROUP | RIPE | ASSIGNED PA | ● low |
| 81.187.158.88/29 | OPTIKA-CLULOW-GROUP | RIPE | ASSIGNED PA | ● low |
| 81.187.167.156/30 | OPTIKA-CLULOW-GROUP | RIPE | ASSIGNED PA | ● low |
| 81.187.170.204/30 | OPTIKA-CLULOW-GROUP | RIPE | ASSIGNED PA | ● low |
| 81.187.183.22/32 | OPTIKA-CLULOW-GROUP | RIPE | ASSIGNED PA | ● low |
| 81.187.183.253/32 | OPTIKA-CLULOW-GROUP | RIPE | ASSIGNED PA | ● low |
| 81.187.186.122/32 | OPTIKA-CLULOW-GROUP | RIPE | ASSIGNED PA | ● low |
| 81.187.188.126/32 | OPTIKA-CLULOW-GROUP | 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
(73 of 73)
Possible discrepancies (3)
These blocks are registered to OPTIKA-CLULOW-GROUP 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.
| 2001:8b0:1f3::/48 /48 | authorized for AS20712 — Andrews & Arnold Ltd |
| 2001:8b0:3ff::/48 /48 | authorized for AS20712 — Andrews & Arnold Ltd |
| 2001:8b0:18b::/48 /48 | authorized for AS20712 — Andrews & Arnold Ltd |
NIC Handles
AA
DUMY-RIPE
DUMY-RIPE