AS57728 CEZNET s.r.o. 🇨🇿 CZ
Announcing 8 prefixes, seen at the RIS collectors.
IPv4 prefixes
5
15,360 (60 × /24)
IPv6 prefixes
3
3 × /32
Upstreams
1
transit providers observed
Peers
0
settlement-free adjacencies
Downstreams
0
transit customers observed
Customer cone
0
ASes reachable through it
Registry and operator data
- AS number
- AS57728
- Name
- CEZNET s.r.o.
- Organisation
- HELIOS MB
- Country
- 🇨🇿 CZ
- RIR
- RIPENCC
- Allocated
- 2019-10-21
- Scope
- Not Disclosed
- Peering policy
- Open
- PeeringDB
- net/22675
RPKI coverage of this AS
Its own announcements, validated against the current ROA set
Announced prefixes
8 in total
| Prefix | RPKI | Peers | Sample path | First seen |
|---|---|---|---|---|
| 81.25.16.0/21 v4 | RPKI valid | 41 | 244823979157728 | 2026-09-18 |
| 81.25.24.0/21 v4 | RPKI valid | 41 | 244823979157728 | 2026-09-18 |
| 109.234.40.0/21 v4 | RPKI valid | 41 | 244823979157728 | 2026-09-18 |
| 185.255.116.0/22 v4 | RPKI valid | 41 | 244823979157728 | 2026-09-18 |
| 188.122.192.0/19 v4 | RPKI valid | 41 | 244823979157728 | 2026-09-18 |
| 2a00:1800::/32 v6 | RPKI valid | 34 | 244823979157728 | 2026-09-18 |
| 2a00:1807::/32 v6 | RPKI valid | 34 | 244823979157728 | 2026-09-18 |
| 2a0a:b6c0::/32 v6 | RPKI valid | 34 | 244823979157728 | 2026-09-18 |