Web4U s.r.o.
Cluster stats
| Netblocks | 19 |
| All fragments | 61 blocks across 27 clusters |
| Cluster ID | 191597364 |
| Registry | BGP |
| Customers | find customers using this network → |
Evidence & provenance ?
| Attribution | unresolved |
| 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 | |
IP Ranges (19)
⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 81.91.80.0/21 | Web4U s.r.o. | BGP | ANNOUNCED | ● high |
| 81.91.80.0/20 | Web4U s.r.o. | BGP | ANNOUNCED | ● high |
| 81.91.88.0/21 | Web4U s.r.o. | BGP | ANNOUNCED | ● high |
| 185.14.224.0/22 | Web4U s.r.o. | BGP | ANNOUNCED | ● high |
| 185.14.224.0/23 | Web4U s.r.o. | BGP | ANNOUNCED | ● high |
| 2001:1568::/32 | Web4U s.r.o. | BGP | ANNOUNCED | ● high |
| 2001:1568::/33 | Web4U s.r.o. | BGP | ANNOUNCED | ● high |
| 2001:1568:8000::/33 | Web4U s.r.o. | BGP | ANNOUNCED | ● high |
| 81.91.80.0/26 | Web4U s.r.o. | RIPE | ASSIGNED PA | ● low |
| 81.91.80.0/20 | Web4U s.r.o. | RIPE | ALLOCATED PA | ● low |
| 81.91.81.0/24 | Web4U s.r.o. | RIPE | ASSIGNED PA | ● low |
| 81.91.82.0/24 | Web4U s.r.o. | RIPE | ASSIGNED PA | ● low |
| 81.91.83.0/24 | Web4U s.r.o. | RIPE | ASSIGNED PA | ● low |
| 81.91.84.0/24 | Web4U s.r.o. | RIPE | ASSIGNED PA | ● low |
| 81.91.85.0/24 | Web4U s.r.o. | RIPE | ASSIGNED PA | ● low |
| 81.91.86.0/23 | Web4U s.r.o. | RIPE | ASSIGNED PA | ● low |
| 81.91.90.0/24 | Web4U s.r.o. | RIPE | ASSIGNED PA | ● low |
| 185.14.224.0/22 | Web4U s.r.o. | RIPE | ALLOCATED PA | ● low |
| 2001:1568::/32 | Web4U s.r.o. | RIPE | ALLOCATED-BY-RIR | ● low |
Network trust
what's this?
RPKI hygiene: A
how networks compare →
100.0%
of checked blocks have valid RPKI ROA coverage
(19 of 19)
No discrepancies found among checked blocks.
NIC Handles
AS39790
DUMY-RIPE
DUMY-RIPE
MNT-WEB4U
MNT-WEB4U
ORG-WS296-RIPE
RIPE-NCC-HM-MNT