204064 CEZNET CEZNET s.r.o., CZ
Adjacency: 2 Upstream: 1 Downstream: 1
Upstream Adjacent AS list
AS47232 ISPALLIANCE, CZ
Downstream Adjacent AS list
AS51424 ASAGNET, CZ
Rank AS Type Originate Addr Space (pfx) Transit Addr space (pfx) Description 16642 AS204064 ORG+TRN Originate: 4352 /19.91 Transit: 1024 /22.00 CEZNET CEZNET s.r.o., CZ
Aggregation Suggestions
Filter: Aggregates, Specifics
This report does not take into account conditions local to each origin AS in terms of policy or traffic engineering requirements, so this is an approximate guideline as to aggregation possibilities.
Rank AS AS Name Current Wthdw Aggte Annce Redctn % 27249 AS204064 CEZNET CEZNET s.r.o., CZ 5 1 0 4 1 20.00% Prefix AS Path Aggregation Suggestion 185.115.180.0/22 6939 47232 204064 185.116.48.0/22 6939 47232 204064 185.116.51.0/24 6939 47232 204064 - Withdrawn - matching aggregate 185.116.48.0/22 6939 47232 204064 185.151.172.0/22 6939 47232 204064 185.201.12.0/22 6939 47232 204064
Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.
AS204064 1 More Specifics 5 Total Advertisements TANET, CZ
185.116.51.0/24 185.116.48.0/22
whois: 402590
IANA has recorded AS204064 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS204064\n % This is the RIPE Database query service.
% The objects are in RPSL format.
%
% The RIPE Database is subject to Terms and Conditions.
% See https://docs.db.ripe.net/terms-conditions.html
% Note: this output has been filtered.
% Information related to 'AS203940 - AS205662'
as-block: AS203940 - AS205662
descr: RIPE NCC ASN block
remarks: These AS Numbers are assigned to network operators in the RIPE NCC service region.
mnt-by: RIPE-NCC-HM-MNT
created: 2026-03-05T15:29:31Z
last-modified: 2026-03-05T15:29:31Z
source: RIPE
% Information related to 'AS204064'
% Abuse contact for 'AS204064' is 'dohled@ceznet.cz'
aut-num: AS204064
as-name: CEZNET-AS
descr: CEZNET s.r.o.
descr: TAN
org: ORG-TBS13-RIPE
import: from AS47232 accept ANY
export: to AS47232 announce AS204064
import: from AS39392 accept ANY
export: to AS39392 announce AS204064
admin-c: CH13482-RIPE
tech-c: CH13482-RIPE
status: ASSIGNED
mnt-by: RIPE-NCC-END-MNT
mnt-by: CEZNET-MNT
created: 2015-09-03T12:31:29Z
last-modified: 2025-09-12T10:26:04Z
source: RIPE
organisation: ORG-TBS13-RIPE
org-name: CEZNET s.r.o.
country: CZ
reg-nr: 26378191
org-type: LIR
address: Duhova 1531/3
address: 140 00
address: Praha 4
address: CZECH REPUBLIC
phone: +420 211 046 699
admin-c: CH13482-RIPE
tech-c: CH13482-RIPE
abuse-c: CH13482-RIPE
mnt-ref: CEZNET-MNT
mnt-by: RIPE-NCC-HM-MNT
mnt-by: CEZNET-MNT
created: 2017-04-26T07:50:49Z
last-modified: 2026-05-13T07:38:07Z
source: RIPE # Filtered
role: CEZNET hostmaster
address: CEZNET s.r.o.
address: Vilemovska 1602
address: Tachov
address: 347 01
address: The Czech Republic
abuse-mailbox: dohled@ceznet.cz
phone: +420 211 046 699
admin-c: MV6352-RIPE
tech-c: KD4331-RIPE
tech-c: MJ83172-RIPE
nic-hdl: CH13482-RIPE
mnt-by: CEZNET-MNT
created: 2024-01-12T08:23:53Z
last-modified: 2024-01-12T08:25:01Z
source: RIPE # Filtered
% This query was served by the RIPE Database Query Service version 1.122.1 (BUSA)