Network
O2 Czech Republic, a.s.
AS16246registered in Czechia (CZ)hosts in 1 country
As of 2026-10-21, O2 Czech Republic, a.s. (AS16246, registered in Czechia) had 8 287 hosts seen in 1 country; 47 of them with known CVEs (166 distinct, 2 known to be exploited). It announces 13 IPv4 prefixes and 2 IPv6 prefixes (133 120 IPv4 addresses, 1 504th by address space).
Known CVEs in this network
CVEs by severity: CRITICAL 15 HIGH 73 MEDIUM 65 LOW 13
A match is an indication, not proof: it is based on the software version a service reported, and fixes are often backported without changing the version.
Not counted: 16 hosts with CVEs only on distribution builds whose fix may be backported.
Counted 2026-10-21 04:20 UTC
- Organisation
- Nej.cz s.r.o.
- Network type
- Access network (cable / DSL / ISP) · peering policy Open
- Website
- http://www.nej.cz
- Registry
- RIPE NCC · Czechia CZ · allocated 2001-02-07
- Announced prefixes
- 13 IPv4 · 2 IPv6 See them
- IPv4 address space
- 133 120 addresses · 1 504th of 87 475 networks by size
- Rank by exposure
- 3 833rd by hosts with known CVEs Ranking
Routing
Most common CVEs in this network
The 50 found on the most hosts, of 166 CVEs.
Most exposed hosts
Known exploited first, then by the number of CVEs.
Where its hosts are
| Country | Hosts | With CVEs |
|---|---|---|
| Czechia CZ | 8 287 | 47 |