Network
Mainstream doo Beograd
AS51859registered in Serbia (RS)hosts in 3 countries
As of 2026-10-29, Mainstream doo Beograd (AS51859, registered in Serbia) had 600 hosts seen in 3 countries; 80 of them with known CVEs (389 distinct, 5 known to be exploited). It announces 35 IPv4 prefixes and 3 IPv6 prefixes (14 080 IPv4 addresses, 7 689th by address space).
Known CVEs in this network
CVEs by severity: CRITICAL 83 HIGH 164 MEDIUM 123 LOW 19
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: 44 hosts with CVEs only on distribution builds whose fix may be backported.
Counted 2026-10-29 04:21 UTC
- Organisation
- Mainstream EU
- Network type
- Content / hosting · peering policy Open
- Website
- https://www.mainstream.eu/
- Registry
- RIPE NCC · Serbia RS · allocated 2010-11-17
- Announced prefixes
- 35 IPv4 · 3 IPv6 See them
- IPv4 address space
- 14 080 addresses · 7 689th of 87 741 networks by size
- Rank by exposure
- 2 894th by hosts with known CVEs Ranking
- Exchange points
- 1
Routing
Most common CVEs in this network
The 50 found on the most hosts, of 389 CVEs.
Most exposed hosts
Known exploited first, then by the number of CVEs.
Where its hosts are
| Country | Hosts | With CVEs |
|---|---|---|
| Serbia RS | 424 | 48 |
| Bulgaria BG | 139 | 28 |
| Slovenia SI | 37 | 4 |