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

8,175

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

186

Valid Prefixes

NotFound

Announced (BGP)

RPKI Coverage

93.1%

Geographic Footprint

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

25,463

Top Open Ports

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

Port	Open IPs
2000	3,531
5060	2,701
443	390
80	389
22	259
523	177
9092	176
9080	165
691	165
6000	161
2638	158
22222	156
6379	155
512	154
2049	153

Upstreams

AS6204

AS21320

AS60606