ASN Lookup Tool
AS2852 CESNET2

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ASN Extended Info API & BGP Active Prefixes API
ASN Details
ASN
AS2852
Organisation
CESNET z.s.p.o.
Name
CESNET2
Total IPv4 Addresses
848754
Total IPv4 Prefixes
30
Total IPv6 Prefixes
4
Total IPv4 Bogon Prefixes
0
Total IPv6 Bogon Prefixes
0
IPv4 Space Rank
#417 out of 76,852
Registry
Ripe
Registered Country
CZ flag CZ
Registered Country Name
Czechia
Registered Date
2002-06-22
Registration Last Change
2023-05-28
Receiving From

The list of active Autonomous Systems (ASs) which send traffic to that ASN.

ASN
Organisation
IQ flagSAWAD LAND for Information Technology Ltd
US flagSprint
US flagNTT America, Inc.
UY flagAdministracion Nacional de Telecomunicaciones
ZA flagTelkom SA Ltd.
Showing 5 of 63
Transit To

The list of active Autonomous Systems (ASs) which receive traffic from that ASN.

 

ASN
Organisation
SK flagZdruzenie pouzivatelov Slovenskej akademickej da..
AT flagACONET
CZ flagBrno University of Technology
CZ flagState Institute for Drug Control
CZ flagPlzensky kraj
Showing 5 of 18
IPv4 Active Prefixes

This provides the list of IPv4 address space routes/prefixes currently announced on Border Gateway Protocol (BGP).

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Autonomous System (AS) is a network (or collection of networks) that are all managed and supervised by a single entity or organisation. This tool provides a comprehensive ownership and connectivity report for any given AS number.