Web4U s.r.o.
Cluster stats
Netblocks19
All fragments 61 blocks across 27 clusters
Cluster ID191597364
RegistryBGP
Customersfind 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