CESNET-PRAHA
Cluster stats
Netblocks10
All fragments 12 blocks across 2 clusters
Cluster ID191881919
RegistryRIPE
Customersfind 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

Footprint over time

2 weekly snapshots · JSON
10 0 netblocks since 2026-07-05
2026-07-05 peak 10 2026-07-06

IP Ranges (10)

⬇ export CSV
CIDR Org name Registry Status Confidence
194.108.145.0/24 CESNET-PRAHA RIPE ASSIGNED PA ● low
194.108.151.0/29 CESNET-PRAHA RIPE ASSIGNED PA ● low
194.108.154.0/24 CESNET-PRAHA RIPE ASSIGNED PA ● low
194.108.177.0/24 CESNET-PRAHA RIPE ASSIGNED PA ● low
194.108.189.0/24 CESNET-PRAHA RIPE ASSIGNED PA ● low
194.108.203.0/24 CESNET-PRAHA RIPE ASSIGNED PA ● low
194.108.223.128/27 CESNET-PRAHA RIPE ASSIGNED PA ● low
194.212.229.96/27 CESNET-PRAHA RIPE ASSIGNED PA ● low
194.212.232.240/28 CESNET-PRAHA RIPE ASSIGNED PA ● low
194.212.236.0/26 CESNET-PRAHA RIPE ASSIGNED PA ● low

Network trust

what's this?
RPKI hygiene: A how networks compare →
100.0% of checked blocks have valid RPKI ROA coverage (10 of 10)
Possible discrepancies (5)

These blocks are registered to CESNET-PRAHA 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.

194.108.203.0/24 /24 authorized for AS13036 — T-Mobile Czech Republic a.s.
194.108.154.0/24 /24 authorized for AS13036 — T-Mobile Czech Republic a.s.
194.108.189.0/24 /24 authorized for AS13036 — T-Mobile Czech Republic a.s.
194.108.145.0/24 /24 authorized for AS13036 — T-Mobile Czech Republic a.s.
194.108.177.0/24 /24 authorized for AS13036 — T-Mobile Czech Republic a.s.

NIC Handles

CES-IP-MNT DUMY-RIPE DUMY-RIPE GTSCZ-MNT