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

8,150

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

248

Valid Prefixes

NotFound

Announced (BGP)

RPKI Coverage

93.1%

Geographic Footprint

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

25,325

Top Open Ports

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

Port	Open IPs
2000	3,431
5060	2,652
443	384
80	374
22	253
523	170
9092	165
691	161
6000	160
9080	158
6379	153
2638	153
512	152
22222	152
8443	149

Upstreams

AS6204

AS21320

AS60606