Michal Swierk trading as ALFA-KOMPUTER SYSTEM
Cluster stats
| Netblocks | 8 |
| All fragments | 169 blocks across 40 clusters |
| Cluster ID | 191597454 |
| Registry | BGP |
| Customers | find customers using this network → |
Evidence & provenance ?
| Attribution | unresolved |
| Shared handles | clustered on 9 shared RIR contact/maintainer handles |
| Registry names | 2 distinct registrant names across these blocks |
| full provenance (JSON) → · how attribution works | |
IP Ranges (8)
⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 185.18.132.0/22 | Michal Swierk trading as ALFA-KOMPUTER SYSTEM | BGP | ANNOUNCED | ● high |
| 185.255.252.0/22 | Michal Swierk trading as ALFA-KOMPUTER SYSTEM | BGP | ANNOUNCED | ● high |
| 195.136.176.0/22 | Michal Swierk trading as ALFA-KOMPUTER SYSTEM | BGP | ANNOUNCED | ● high |
| 2a03:f840::/48 | Michal Swierk trading as ALFA-KOMPUTER SYSTEM | RIPE | ASSIGNED | ● high |
| 146.19.33.0/24 | Michal Swierk trading as ALFA-KOMPUTER SYSTEM | RIPE | ALLOCATED PA | ● low |
| 185.18.132.0/22 | Michal Swierk trading as ALFA-KOMPUTER SYSTEM | RIPE | ALLOCATED PA | ● low |
| 185.255.252.0/22 | Michal Swierk trading as ALFA-KOMPUTER SYSTEM | RIPE | ALLOCATED PA | ● low |
| 2a03:f840::/32 | Michal Swierk trading as ALFA-KOMPUTER SYSTEM | RIPE | ALLOCATED-BY-RIR | ● low |
Network trust
what's this?
RPKI hygiene: F
how networks compare →
12.5%
of checked blocks have valid RPKI ROA coverage
(1 of 8)
Possible discrepancies (1)
These blocks are registered to Michal Swierk trading as ALFA-KOMPUTER SYSTEM 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.
| 195.136.176.0/22 /22 | authorized for AS20804 — Exatel S.A. |
NIC Handles
AS199390
DUMY-RIPE
DUMY-RIPE
MNT-ALFAKS
MNT-ALFAKS
MNT-EXATEL
ORG-MSTA10-RIPE
ORG-MSTA7-RIPE
RIPE-NCC-HM-MNT