Jan Czmok
BGP inherited
Cluster stats
| Netblocks | 1 |
| All fragments | 413 blocks across 183 clusters |
| Cluster ID | 193377420 |
| Registry | RIPE |
| Customers | find customers using this network → |
Evidence & provenance ?
| Attribution | BGP parent (inherited) |
| Shared handles | clustered on 5 shared RIR contact/maintainer handles |
| Registry names | 1 distinct registrant name across these blocks |
| full provenance (JSON) → · how attribution works | |
IP Ranges (1)
⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 193.25.172.0/24 | Jan Czmok | RIPE | ASSIGNED PI | ● high |
Network trust
what's this?
RPKI hygiene: A
how networks compare →
100.0%
of checked blocks have valid RPKI ROA coverage
(1 of 1)
Possible discrepancies (1)
These blocks are registered to Jan Czmok 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.
| 193.25.172.0/24 /24 | authorized for AS8495 — INTERNET AG Global Network |
NIC Handles
DUMY-RIPE
DUMY-RIPE
LAMBDASOL-MNT
ORG-LSJC1-RIPE
RIPE-NCC-END-MNT