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

8,235

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

217

Valid Prefixes

NotFound

Announced (BGP)

RPKI Coverage

93.1%

Geographic Footprint

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

25,743

Top Open Ports

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

Port	Open IPs
2000	3,732
5060	2,802
443	421
80	413
22	273
523	188
9092	183
6000	176
691	176
9080	175
2638	169
22222	169
5984	166
512	163
9100	163

Upstreams

AS6204

AS21320

AS60606