FIBER Network s.r.o.
Data as of 2026-07-26
BGP inherited
Cluster stats
| Netblocks | 5 · 5,120 IPv4 addresses |
| IPv6 | 1 prefix (largest 2a02:28a8::/32) |
| All fragments | 14 blocks across 4 clusters |
| Cluster ID | 214420921 |
| Registry | BGP |
| Customers | find customers using this network → |
Evidence & provenance ?
| Attribution | BGP parent (inherited) |
| Shared handles | clustered on 7 shared RIR contact/maintainer handles |
| Registry names | 2 distinct registrant names across these blocks |
| full provenance (JSON) → · how attribution works · report an issue | |
Footprint over time
6 weekly snapshots · JSON
7
0 netblocks since 2026-07-05
2026-07-05
peak 7
2026-07-26
IP Ranges (5)
⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 217.28.80.0/21 | FIBER Network s.r.o. | BGP | ANNOUNCED | ● high |
| 2a02:28a8::/32 | FIBER Network s.r.o. | BGP | ANNOUNCED | ● high |
| 185.153.80.0/22 | FIBER Network s.r.o. | RIPE | ALLOCATED PA | ● low |
| 217.28.80.0/20 | FIBER Network s.r.o. | RIPE | ALLOCATED PA | ● low |
| 217.28.88.0/21 | FIBER Network s.r.o. | RIPE | ASSIGNED PA | ● low |
IPv6 ranges (1)
| CIDR |
|---|
| 2a02:28a8::/32 |
Network trust
what's this?
RPKI hygiene: C
how networks compare →
71.4%
of checked blocks have valid RPKI ROA coverage
(5 of 7)
No discrepancies found among checked blocks.
NIC Handles
AS51800
DUMY-RIPE
DUMY-RIPE
MNT-FIBERCZ
MNT-FIBERCZ
ORG-FNs4-RIPE
RIPE-NCC-HM-MNT