57728 TELIN-AS, CZ
Adjacency: 1 Upstream: 1 Downstream: 0
Upstream Adjacent AS list
AS39791 TPS-AS Telco Pro Services, a.s., CZ
Rank AS Type Originate Addr Space (pfx) Transit Addr space (pfx) Description 8231 AS57728 ORIGIN Originate: 15360 /18.09 Transit: 0 /0.00 TELIN-AS, 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 % 24000 AS57728 TELIN-AS, CZ 5 2 1 4 1 20.00% Prefix AS Path Aggregation Suggestion 81.25.16.0/20 6939 39791 57728 57728 57728 57728 57728 57728 57728 + Announce - aggregate of 81.25.16.0/21 (6939 39791 57728 57728 57728 57728 57728 57728 57728) and 81.25.24.0/21 (6939 39791 57728 57728 57728 57728 57728 57728 57728) 81.25.16.0/21 6939 39791 57728 57728 57728 57728 57728 57728 57728 - Withdrawn - aggregated with 81.25.24.0/21 (6939 39791 57728 57728 57728 57728 57728 57728 57728) 81.25.24.0/21 6939 39791 57728 57728 57728 57728 57728 57728 57728 - Withdrawn - aggregated with 81.25.16.0/21 (6939 39791 57728 57728 57728 57728 57728 57728 57728) 109.234.40.0/21 6939 39791 57728 57728 57728 57728 57728 57728 57728 185.255.116.0/22 6939 39791 57728 57728 57728 57728 57728 57728 57728 188.122.192.0/19 6939 39791 57728 57728 57728 57728 57728 57728 57728
Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.
AS57728 2 More Specifics 5 Total Advertisements HELIOSMB-AS, CZ
81.25.16.0/21 81.25.16.0/20
81.25.24.0/21 81.25.16.0/20
whois: 402590
IANA has recorded AS57728 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS57728\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 'AS57370 - AS57973'
as-block: AS57370 - AS57973
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: 2025-04-24T14:15:44Z
last-modified: 2025-04-24T14:15:44Z
source: RIPE
% Information related to 'AS57728'
% Abuse contact for 'AS57728' is 'dohled@ceznet.cz'
aut-num: AS57728
as-name: CEZNET-AS
org: ORG-TBS13-RIPE
remarks: ---- NIX.CZ ----
import: from AS47200 accept ANY
export: to AS47200 announce AS-SET-HELIOSMB
remarks: ---- PEERING.CZ ----
import: from AS61195 accept ANY
export: to AS61195 announce AS-SET-HELIOSMB
remarks: ---- Telia ----
import: from AS1299 accept ANY
export: to AS1299 announce AS-SET-HELIOSMB
remarks: ---- TPS ----
import: from AS39791 accept ANY
export: to AS39791 announce AS-SET-HELIOSMB
remarks: ---- Superhosting.cz ----
import: from AS39392 accept ANY
export: to AS39392 announce AS-SET-HELIOSMB
remarks: ---- Cerberos ----
import: from AS42477 accept ANY
export: to AS42477 announce AS-SET-HELIOSMB
remarks: ---- 4NET ----
import: from AS198346 accept AS198346
export: to AS198346 announce AS-SET-HELIOSMB
remarks: ---- CSC ----
import: from AS62298 accept AS62298
export: to AS62298 announce AS-SET-HELIOSMB
remarks: ---- UPC ----
import: from AS6830 accept ANY
export: to AS6830 announce AS57728
admin-c: CH13482-RIPE
tech-c: CH13482-RIPE
status: ASSIGNED
mnt-by: RIPE-NCC-END-MNT
mnt-by: CEZNET-MNT
created: 2019-10-21T06:50:54Z
last-modified: 2025-09-26T09:55:20Z
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 (SHETLAND)