Open Makers LTD Michal Zuchowski
Cluster stats
| Netblocks | 5 |
| All fragments | 1,723 blocks across 220 clusters |
| Cluster ID | 192340383 |
| Registry | RIPE |
| Customers | find customers using this network → |
Evidence & provenance ?
| Attribution | unresolved |
| 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 | |
IP Ranges (5)
⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 54.37.134.136/29 | Open Makers LTD Michal Zuchowski | RIPE | LEGACY | ● high |
| 54.38.142.88/30 | Open Makers LTD Michal Zuchowski | RIPE | LEGACY | ● high |
| 145.239.25.236/30 | Open Makers LTD Michal Zuchowski | RIPE | ASSIGNED PA | ● high |
| 193.33.176.0/23 | Open Makers Michal Zuchowski | RIPE | ASSIGNED PI | ● high |
| 185.73.231.176/30 | OPEN-MAKERS-MICHAL-ZUCHOWSKI-net | 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
(5 of 5)
Possible discrepancies (1)
These blocks are registered to Open Makers LTD Michal Zuchowski 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.
| 193.33.176.0/23 /23 | authorized for AS16276 — OVH SAS |
NIC Handles
DEVON-MNT
DUMY-RIPE
DUMY-RIPE
ETOP-MNT
OPENMAKRES-MNT
ORG-BZNP1-RIPE
ORG-OMLM1-RIPE
OVH-MNT
RIPE-NCC-END-MNT