Autonomous System

AS2852 · CESNET

Aggregated from public BGP, CT logs, our scan layer, honeypots and global probes.

bgp.tools RIPEstat

Announced IPs

859k

IPv4

IPv4 Prefixes

IPv6 Prefixes

Hosted Domains

8,125

resolve into this AS

Peers

152

Customers

AS Profile

AS Name

CESNET

AS Type

Educational/Research

Scope

Europe

Traffic

500-1000Gbps

Website

https://www.cesnet.cz

IRR AS-SET

AS2852:AS-CESNET-GOOGLE

RIR

RIPE NCC

Country

Allocated

1993-12-20

RPKI Validity

Total ROAs

155

Valid Prefixes

NotFound

Announced (BGP)

RPKI Coverage

93.1%

Geographic Footprint

Countries where this AS's scanned IPs are geolocated, by open-IP count.

25,189

Top Open Ports

Most common open ports across IPs in this AS (last 30 days).

Port	Open IPs
2000	3,325
5060	2,612
443	374
80	364
22	243
523	163
9092	161
6000	158
691	157
9080	154
6379	153
512	151
9100	148
22222	148
2049	146

Upstreams

AS6204

AS21320

AS60606