Michal Buchtik
Cluster stats
| Netblocks | 2 |
| All fragments | 169 blocks across 40 clusters |
| Cluster ID | 195220169 |
| Registry | RIPE |
| Customers | find customers using this network → |
Evidence & provenance ?
| Attribution | unresolved |
| Shared handles | clustered on 4 shared RIR contact/maintainer handles |
| Registry names | 1 distinct registrant name across these blocks |
| full provenance (JSON) → · how attribution works | |
IP Ranges (2)
⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 109.164.121.0/24 | Michal Buchtik | RIPE | ASSIGNED PA | ● high |
| 2a03:3a01::/32 | Michal Buchtik | RIPE | ASSIGNED | ● high |
Network trust
what's this?
RPKI hygiene: A
how networks compare →
100.0%
of checked blocks have valid RPKI ROA coverage
(2 of 2)
Possible discrepancies (2)
These blocks are registered to Michal Buchtik 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.
| 2a03:3a01::/32 /32 | authorized for AS44489 — STARNET, s.r.o. |
| 109.164.121.0/24 /24 | authorized for AS44489 — STARNET, s.r.o. |
NIC Handles
DUMY-RIPE
DUMY-RIPE
MB1790-MNT
ORG-MB220-RIPE