51420 CYRILEK-AS, CZ
Adjacency: 2 Upstream: 2 Downstream: 0
Upstream Adjacent AS list
AS28725 CETIN-AS, CZ
AS44489 STARNET, CZ
Rank AS Type Originate Addr Space (pfx) Transit Addr space (pfx) Description 6847 AS51420 ORIGIN Originate: 20480 /17.68 Transit: 0 /0.00 CYRILEK-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 % 6774 AS51420 CYRILEK-AS, CZ 18 11 4 11 7 38.89% Prefix AS Path Aggregation Suggestion 109.164.64.0/19 3303 33891 39392 44489 51420 109.164.64.0/19 6939 33891 39392 44489 51420 + Announce - aggregate of 109.164.64.0/20 (6939 33891 39392 44489 51420) and 109.164.80.0/20 (6939 33891 39392 44489 51420) 109.164.64.0/20 6939 33891 39392 44489 51420 - Withdrawn - aggregated with 109.164.80.0/20 (6939 33891 39392 44489 51420) 109.164.80.0/20 6939 33891 39392 44489 51420 - Withdrawn - aggregated with 109.164.64.0/20 (6939 33891 39392 44489 51420) 109.164.83.0/24 7018 1299 39392 44489 51420 109.164.84.0/23 7018 1299 39392 44489 51420 + Announce - aggregate of 109.164.84.0/24 (7018 1299 39392 44489 51420) and 109.164.85.0/24 (7018 1299 39392 44489 51420) 109.164.84.0/24 7018 1299 39392 44489 51420 - Withdrawn - aggregated with 109.164.85.0/24 (7018 1299 39392 44489 51420) 109.164.85.0/24 7018 1299 39392 44489 51420 - Withdrawn - aggregated with 109.164.84.0/24 (7018 1299 39392 44489 51420) 109.164.87.0/24 7018 1299 39392 44489 51420 109.164.88.0/24 7018 1299 39392 44489 51420 109.164.89.0/24 6939 33891 39392 44489 51420 - Withdrawn - matching aggregate 109.164.80.0/20 6939 33891 39392 44489 51420 109.164.90.0/24 6939 33891 39392 44489 51420 - Withdrawn - matching aggregate 109.164.80.0/20 6939 33891 39392 44489 51420 109.164.91.0/24 7018 1299 39392 44489 51420 109.164.92.0/23 7018 1299 39392 44489 51420 + Announce - aggregate of 109.164.92.0/24 (7018 1299 39392 44489 51420) and 109.164.93.0/24 (7018 1299 39392 44489 51420) 109.164.92.0/24 7018 1299 39392 44489 51420 - Withdrawn - aggregated with 109.164.93.0/24 (7018 1299 39392 44489 51420) 109.164.93.0/24 7018 1299 39392 44489 51420 - Withdrawn - aggregated with 109.164.92.0/24 (7018 1299 39392 44489 51420) 109.164.94.0/24 7018 1299 39392 44489 51420 109.164.95.0/24 6939 33891 39392 44489 51420 - Withdrawn - matching aggregate 109.164.80.0/20 6939 33891 39392 44489 51420 109.164.96.0/23 293 28725 51420 51420 51420 51420 109.164.96.0/23 7018 1299 39392 44489 51420 + Announce - aggregate of 109.164.96.0/24 (7018 1299 39392 44489 51420) and 109.164.97.0/24 (7018 1299 39392 44489 51420) 109.164.96.0/24 7018 1299 39392 44489 51420 - Withdrawn - aggregated with 109.164.97.0/24 (7018 1299 39392 44489 51420) 109.164.97.0/24 7018 1299 39392 44489 51420 - Withdrawn - aggregated with 109.164.96.0/24 (7018 1299 39392 44489 51420)
Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.
AS51420 17 More Specifics 17 Total Advertisements CYRILEK-AS, CZ
109.164.64.0/19 109.164.0.0/17
109.164.64.0/20 109.164.0.0/17
109.164.80.0/20 109.164.0.0/17
109.164.83.0/24 109.164.0.0/17
109.164.84.0/24 109.164.0.0/17
109.164.85.0/24 109.164.0.0/17
109.164.87.0/24 109.164.0.0/17
109.164.88.0/24 109.164.0.0/17
109.164.89.0/24 109.164.0.0/17
109.164.90.0/24 109.164.0.0/17
109.164.91.0/24 109.164.0.0/17
109.164.92.0/24 109.164.0.0/17
109.164.93.0/24 109.164.0.0/17
109.164.94.0/24 109.164.0.0/17
109.164.95.0/24 109.164.0.0/17
109.164.96.0/24 109.164.0.0/17
109.164.97.0/24 109.164.0.0/17
whois: 402590
IANA has recorded AS51420 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS51420\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 'AS51357 - AS51817'
as-block: AS51357 - AS51817
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: 2025-02-13T13:57:44Z
last-modified: 2025-02-13T13:57:44Z
source: RIPE
% Information related to 'AS51420'
% Abuse contact for 'AS51420' is 'info@cyrilek.net'
aut-num: AS51420
as-name: CYRILEK-AS
org: ORG-CZ27-RIPE
import: from AS49931 accept ANY
import: from AS25424 accept ANY
import: from AS28725 accept ANY
export: to AS49931 announce AS51420
export: to AS25424 announce AS51420
export: to AS28725 announce AS51420
admin-c: CA11405-RIPE
tech-c: CA11405-RIPE
status: ASSIGNED
mnt-by: RIPE-NCC-END-MNT
mnt-by: lir-cz-cyrileknet-1-MNT
created: 2010-08-19T11:03:12Z
last-modified: 2024-02-22T08:36:15Z
source: RIPE
organisation: ORG-CZ27-RIPE
org-name: cyrilek.net z.s.
country: CZ
reg-nr: 26671875
org-type: LIR
address: Spacilova 3194/38
address: 76701
address: Kromeriz
address: CZECH REPUBLIC
phone: +420 571 110 986
admin-c: CA11405-RIPE
tech-c: CA11405-RIPE
abuse-c: AR74256-RIPE
mnt-ref: lir-cz-cyrileknet-1-MNT
mnt-by: RIPE-NCC-HM-MNT
mnt-by: lir-cz-cyrileknet-1-MNT
created: 2024-02-21T12:50:25Z
last-modified: 2026-05-13T07:10:35Z
source: RIPE # Filtered
%ERROR:201: access denied for 2401:2000:6660:0:0:0:0:13
%
% Queries from your IP address have passed the daily limit of controlled objects.
% Access from your host has been temporarily denied.
% For more information, see
% https://docs.db.ripe.net/FAQ#why-did-i-receive-an-error-201-access-denied
% This query was served by the RIPE Database Query Service version 1.122.1 (BUSA)