AS2852 CESNET z.s.p.o. 🇨🇿 CZ
Announcing 27 prefixes, seen at the RIS collectors.
IPv4 prefixes
26
858,112 (3,352 × /24)
IPv6 prefixes
1
8 × /32
Upstreams
9
transit providers observed
Peers
23
settlement-free adjacencies
Downstreams
18
transit customers observed
Customer cone
33
ASes reachable through it
Registry and operator data
- AS number
- AS2852
- Name
- CESNET z.s.p.o.
- Organisation
- CESNET
- Country
- 🇨🇿 CZ
- RIR
- RIPENCC
- Allocated
- 1993-12-20
- Network type
- Educational/Research
- Traffic levels
- 500-1000Gbps
- Scope
- Europe
- Peering policy
- Selective
- IRR as-set
- AS2852:AS-CESNET-GOOGLE
- Website
- https://www.cesnet.cz
- Looking glass
- https://lg.cesnet.cz
- PeeringDB
- net/660
- Exchanges
- 3
RPKI coverage of this AS
Its own announcements, validated against the current ROA set
Announced prefixes
27 in total
| Prefix | RPKI | Peers | Sample path | First seen |
|---|---|---|---|---|
| 78.128.128.0/17 v4 | RPKI valid | 43 | 345492852 | 2026-09-18 |
| 146.102.0.0/16 v4 | RPKI valid | 43 | 345492852 | 2026-09-18 |
| 147.32.0.0/16 v4 | RPKI valid | 43 | 345492852 | 2026-09-18 |
| 147.33.0.0/16 v4 | RPKI valid | 43 | 345492852 | 2026-09-18 |
| 147.228.0.0/16 v4 | RPKI valid | 43 | 345492852 | 2026-09-18 |
| 147.230.0.0/16 v4 | RPKI valid | 43 | 345492852 | 2026-09-18 |
| 147.231.0.0/16 v4 | RPKI valid | 43 | 345492852 | 2026-09-18 |
| 147.251.0.0/16 v4 | RPKI valid | 43 | 345492852 | 2026-09-18 |
| 158.194.0.0/16 v4 | RPKI valid | 43 | 345492852 | 2026-09-18 |
| 158.196.0.0/16 v4 | RPKI valid | 43 | 345492852 | 2026-09-18 |
| 160.216.0.0/16 v4 | RPKI valid | 43 | 345492852 | 2026-09-18 |
| 160.217.0.0/16 v4 | RPKI valid | 43 | 345492852 | 2026-09-18 |
| 185.8.160.0/22 v4 | RPKI valid | 43 | 345492852 | 2026-09-18 |
| 193.84.32.0/20 v4 | RPKI valid | 43 | 345492852 | 2026-09-18 |
| 193.84.53.0/24 v4 | RPKI valid | 43 | 345492852 | 2026-09-18 |
| 193.84.55.0/24 v4 | RPKI valid | 43 | 345492852 | 2026-09-18 |
| 193.84.56.0/21 v4 | RPKI valid | 43 | 345492852 | 2026-09-18 |
| 193.84.80.0/22 v4 | RPKI valid | 43 | 345492852 | 2026-09-18 |
| 193.84.104.0/22 v4 | RPKI valid | 43 | 345492852 | 2026-09-18 |
| 193.84.116.0/23 v4 | RPKI valid | 43 | 345492852 | 2026-09-18 |
| 193.84.160.0/20 v4 | RPKI valid | 43 | 345492852 | 2026-09-18 |
| 193.84.192.0/19 v4 | RPKI valid | 43 | 345492852 | 2026-09-18 |
| 193.84.192.0/20 v4 | RPKI valid | 43 | 345492852 | 2026-09-18 |
| 193.84.208.0/20 v4 | RPKI valid | 43 | 345492852 | 2026-09-18 |
| 195.113.0.0/16 v4 | RPKI valid | 43 | 345492852 | 2026-09-18 |
| 195.178.64.0/19 v4 | RPKI valid | 43 | 345492852 | 2026-09-18 |
| 2001:718::/29 v6 | RPKI valid | 38 | 345492852 | 2026-09-18 |