CZFree.Net - Praha, z.s.p.o.

Data as of 2026-07-26
BGP inherited
Cluster stats
Netblocks7 · 1,280 IPv4 addresses
IPv6 1 prefix (largest 2a01:490:1::/48)
Cluster ID213744536
RegistryRIPE
Customersfind customers using this network →
Evidence & provenance ?
Attribution BGP parent (inherited)
Shared handles clustered on 5 shared RIR contact/maintainer handles
Registry names 1 distinct registrant name 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 (7)

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CIDR Org name Registry Status Confidence
31.47.105.0/26 CZFree.Net - Praha, z.s.p.o. RIPE ASSIGNED PA ● high
31.47.108.64/26 CZFree.Net - Praha, z.s.p.o. RIPE ASSIGNED PA ● high
78.108.102.0/23 CZFree.Net - Praha, z.s.p.o. RIPE SUB-ALLOCATED PA ● high
78.108.103.224/27 CZFree.Net - Praha, z.s.p.o. RIPE ASSIGNED PA ● high
212.79.106.0/23 CZFree.Net - Praha, z.s.p.o. RIPE SUB-ALLOCATED PA ● high
212.79.108.0/25 CZFree.Net - Praha, z.s.p.o. RIPE SUB-ALLOCATED PA ● high
2a01:490:1::/48 CZFree.Net - Praha, z.s.p.o. RIPE ASSIGNED ● high

IPv6 ranges (1)

CIDR
2a01:490:1::/48

Network trust

what's this?
RPKI hygiene: A how networks compare →
100.0% of checked blocks have valid RPKI ROA coverage (7 of 7)
Possible discrepancies (3)

These blocks are registered to CZFree.Net - Praha, z.s.p.o. 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.

2a01:490:1::/48 /48 authorized for AS8251 — FreeTel, s.r.o.
212.79.106.0/23 /23 authorized for AS8251 — FreeTel, s.r.o.
78.108.102.0/23 /23 authorized for AS8251 — FreeTel, s.r.o.

NIC Handles

CZNFX-MNT DUMY-RIPE DUMY-RIPE ORG-CZFP1-RIPE mnt-cz-h17-1