CEZNET s.r.o.
Cluster stats
| Netblocks | 87 |
| All fragments | 159 blocks across 44 clusters |
| Cluster ID | 191479401 |
| Registry | BGP |
| Customers | find customers using this network → |
Evidence & provenance ?
| Attribution | unresolved |
| Shared handles | clustered on 26 shared RIR contact/maintainer handles |
| Registry names | 4 distinct registrant names across these blocks |
| full provenance (JSON) → · how attribution works | |
IP Ranges (87)
showing 50 of 87 — see all — ⬇ export CSV| CIDR | Org name | Registry | Status | Confidence |
|---|---|---|---|---|
| 37.9.192.0/21 | CEZNET s.r.o. | BGP | ANNOUNCED | ● high |
| 46.36.32.0/19 | CEZNET s.r.o. | BGP | ANNOUNCED | ● high |
| 77.92.192.0/19 | CEZNET s.r.o. | BGP | ANNOUNCED | ● high |
| 77.237.128.0/19 | CEZNET s.r.o. | BGP | ANNOUNCED | ● high |
| 81.25.16.0/21 | CEZNET s.r.o. | BGP | ANNOUNCED | ● high |
| 81.25.24.0/21 | CEZNET s.r.o. | BGP | ANNOUNCED | ● high |
| 82.144.128.0/19 | CEZNET s.r.o. | BGP | ANNOUNCED | ● high |
| 82.202.0.0/18 | CEZNET s.r.o. | BGP | ANNOUNCED | ● high |
| 85.92.32.0/19 | CEZNET s.r.o. | BGP | ANNOUNCED | ● high |
| 91.109.32.0/21 | CEZNET s.r.o. | BGP | ANNOUNCED | ● high |
| 109.234.40.0/21 | CEZNET s.r.o. | BGP | ANNOUNCED | ● high |
| 149.255.64.0/19 | CEZNET s.r.o. | BGP | ANNOUNCED | ● high |
| 185.67.188.0/22 | CEZNET s.r.o. | BGP | ANNOUNCED | ● high |
| 185.115.180.0/22 | CEZNET s.r.o. | BGP | ANNOUNCED | ● high |
| 185.116.48.0/22 | CEZNET s.r.o. | BGP | ANNOUNCED | ● high |
| 185.116.51.0/24 | CEZNET s.r.o. | BGP | ANNOUNCED | ● high |
| 185.151.168.0/22 | CEZNET s.r.o. | BGP | ANNOUNCED | ● high |
| 185.151.172.0/22 | CEZNET s.r.o. | BGP | ANNOUNCED | ● high |
| 185.157.196.0/22 | CEZNET s.r.o. | BGP | ANNOUNCED | ● high |
| 185.193.128.0/22 | CEZNET s.r.o. | BGP | ANNOUNCED | ● high |
| 185.201.12.0/22 | CEZNET s.r.o. | BGP | ANNOUNCED | ● high |
| 185.255.116.0/22 | CEZNET s.r.o. | BGP | ANNOUNCED | ● high |
| 188.122.192.0/19 | CEZNET s.r.o. | BGP | ANNOUNCED | ● high |
| 188.244.48.0/20 | CEZNET s.r.o. | BGP | ANNOUNCED | ● high |
| 212.90.224.0/19 | CEZNET s.r.o. | BGP | ANNOUNCED | ● high |
| 212.111.0.0/19 | CEZNET s.r.o. | BGP | ANNOUNCED | ● high |
| 213.235.64.0/18 | CEZNET s.r.o. | BGP | ANNOUNCED | ● high |
| 2a00:1800::/32 | CEZNET s.r.o. | BGP | ANNOUNCED | ● high |
| 2a00:1807::/32 | CEZNET s.r.o. | BGP | ANNOUNCED | ● high |
| 2a00:e580::/29 | CEZNET s.r.o. | BGP | ANNOUNCED | ● high |
| 2a02:d00::/32 | CEZNET s.r.o. | BGP | ANNOUNCED | ● high |
| 2a02:25b0::/32 | CEZNET s.r.o. | BGP | ANNOUNCED | ● high |
| 2a03:1180::/32 | CEZNET s.r.o. | BGP | ANNOUNCED | ● high |
| 2a05:1200::/30 | CEZNET s.r.o. | BGP | ANNOUNCED | ● high |
| 2a07:7a00::/29 | CEZNET s.r.o. | BGP | ANNOUNCED | ● high |
| 2a0a:3340::/29 | CEZNET s.r.o. | BGP | ANNOUNCED | ● high |
| 2a0a:4080::/32 | CEZNET s.r.o. | BGP | ANNOUNCED | ● high |
| 2a0a:b6c0::/32 | CEZNET s.r.o. | BGP | ANNOUNCED | ● high |
| 82.144.128.0/19 | CEZNET s.r.o. | RIPE | ALLOCATED PA | ● medium |
| 185.115.180.0/23 | CEZNET s.r.o. | RIPE | ASSIGNED PA | ● medium |
| 185.116.48.0/23 | CEZNET s.r.o. | RIPE | ASSIGNED PA | ● medium |
| 185.116.50.0/24 | CEZNET s.r.o. | RIPE | ASSIGNED PA | ● medium |
| 185.151.170.0/24 | HAKO | RIPE | ASSIGNED PA | ● medium |
| 185.151.172.0/23 | CEZNET s.r.o. | RIPE | ASSIGNED PA | ● medium |
| 185.151.174.0/23 | CEZNET s.r.o. | RIPE | ASSIGNED PA | ● medium |
| 37.9.192.0/21 | CEZNET s.r.o. | RIPE | ALLOCATED PA | ● low |
| 77.92.192.0/19 | CEZNET s.r.o. | RIPE | ALLOCATED PA | ● low |
| 77.237.128.0/19 | CEZNET s.r.o. | RIPE | ALLOCATED PA | ● low |
| 81.25.16.0/20 | CEZNET s.r.o. | RIPE | ALLOCATED PA | ● low |
| 82.202.0.0/18 | CEZNET s.r.o. | RIPE | ALLOCATED PA | ● low |
Network trust
what's this?
RPKI hygiene: B
how networks compare →
94.3%
of checked blocks have valid RPKI ROA coverage
(82 of 87)
Possible discrepancies (7)
These blocks are registered to CEZNET s.r.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:a040::/40 /40 | authorized for AS39791 — Telco Pro Services, a. s. |
| 2a01:a040:100::/40 /40 | authorized for AS39791 — Telco Pro Services, a. s. |
| 2a01:a040:200e::/48 /48 | authorized for AS39791 — Telco Pro Services, a. s. |
| 2a01:a040:2010::/48 /48 | authorized for AS39791 — Telco Pro Services, a. s. |
| 89.111.114.0/23 /23 | authorized for AS39791 — Telco Pro Services, a. s. |
| 89.111.116.0/23 /23 | authorized for AS39791 — Telco Pro Services, a. s. |
| 89.111.118.0/24 /24 | authorized for AS39791 — Telco Pro Services, a. s. |
NIC Handles
AS198002
AS201654
AS204064
AS25424
AS47493
AS49101
AS57728
AS6740
CEZNET-MNT
CEZNET-MNT
CEZNETAS-MNT
CH13482-RIPE
+14 more