25151 CYSO-AS, NL
Adjacency: 8 Upstream: 6 Downstream: 2
Upstream Adjacent AS list
AS293 ESNET, US
AS37100 SEACOM-AS, MU
AS2914 NTT-LTD-2914, US
AS12552 IPO-EU, SE
AS3356 LEVEL3, US
AS1299 TWELVE99 Arelion, fka Telia Carrier, SE
Downstream Adjacent AS list
AS210728 CYSO-AS-DE CYSO-AMS, NL
AS15535 VIRTUALXS-AS, NL
Rank AS Type Originate Addr Space (pfx) Transit Addr space (pfx) Description 7366 AS25151 ORG+TRN Originate: 17920 /17.87 Transit: 2048 /21.00 CYSO-AS, NL
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 % 10106 AS25151 CYSO-AS, NL 24 5 1 20 4 16.67% Prefix AS Path Aggregation Suggestion 2.57.56.0/24 2914 25151 25151 25151 25151 37.46.136.0/21 2914 25151 37.72.138.0/24 2914 25151 25151 25151 25151 45.134.223.0/24 2914 25151 25151 25151 25151 46.253.137.0/24 293 25151 25151 25151 25151 62.129.139.0/24 2914 25151 25151 25151 25151 62.129.149.0/24 2914 25151 25151 25151 25151 80.85.160.0/23 2914 25151 80.85.161.0/24 2914 25151 25151 25151 25151 81.24.0.0/21 2914 25151 + Announce - aggregate of 81.24.0.0/22 (2914 25151) and 81.24.4.0/22 (2914 25151) 81.24.0.0/22 2914 25151 - Withdrawn - aggregated with 81.24.4.0/22 (2914 25151) 81.24.4.0/22 2914 25151 - Withdrawn - aggregated with 81.24.0.0/22 (2914 25151) 81.24.4.0/24 37100 25151 81.24.6.0/23 2914 25151 - Withdrawn - matching aggregate 81.24.4.0/22 2914 25151 81.24.8.0/22 2914 25151 81.24.9.0/24 2914 25151 - Withdrawn - matching aggregate 81.24.8.0/22 2914 25151 81.24.10.0/23 2914 25151 - Withdrawn - matching aggregate 81.24.8.0/22 2914 25151 85.158.200.0/21 2914 25151 93.94.224.0/21 2914 25151 109.235.72.0/21 2914 25151 130.193.5.0/24 293 25151 25151 25151 25151 185.54.112.0/22 2914 25151 185.78.196.0/22 2914 25151 185.123.55.0/24 2914 25151 25151 25151 25151 193.33.220.0/24 2914 25151
Advertisements that are fragments of the original RIR allocation (more specifics) originated by this AS.
AS25151 2 More Specifics 13 Total Advertisements CYSO-AS, NL
45.134.223.0/24 45.134.220.0/22
217.170.2.0/23 217.170.0.0/20
80.85.161.0/24 80.85.160.0/20
81.24.0.0/22 81.24.0.0/20
81.24.4.0/22 81.24.0.0/20
81.24.6.0/23 81.24.0.0/20
81.24.8.0/22 81.24.0.0/20
81.24.10.0/23 81.24.0.0/20
Prefixes added and withdrawn by this origin AS in the past 7 days.
+ 81.24.0.0/20 Announced
+ 194.48.214.0/24 Announced
- 80.85.161.0/24 Withdrawn
- 81.24.0.0/22 Withdrawn
- 81.24.4.0/22 Withdrawn
- 81.24.6.0/23 Withdrawn
- 81.24.8.0/22 Withdrawn
- 81.24.10.0/23 Withdrawn
whois: 402603
IANA has recorded AS25151 as originally allocated by
/usr/bin/whois -h jwhois.apnic.netr "AS25151\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 'AS24988 - AS25162'
as-block: AS24988 - AS25162
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: 2018-11-22T15:27:30Z
last-modified: 2018-11-22T15:27:30Z
source: RIPE
% Information related to 'AS25151'
% Abuse contact for 'AS25151' is 'abuse@cyso.net'
aut-num: AS25151
org: ORG-CMH1-RIPE
as-name: CYSO-AS
remarks: AMS-ix route server
import: from AS6777 accept ANY
export: to AS6777 action community .= {6777:6777}; announce AS-CYSO
remarks: NTT
import: from AS2914 action pref=90; accept ANY
export: to AS2914 announce AS-CYSO
remarks: Telia
import: from AS1299 action pref=90; accept ANY
export: to AS1299 announce AS-CYSO
remarks: Level3
import: from AS3356 action pref=90; accept ANY
export: to AS3356 announce AS-CYSO
remarks: Nawas
import: from AS200020 action pref=90; accept ANY
export: to AS200020 announce AS-CYSO
remarks: CYSO-FRA
import: from AS210728 accept ANY
export: to AS210728 announce ANY
admin-c: CYSO-RIPE
tech-c: CYSO-RIPE
status: ASSIGNED
mnt-by: RIPE-NCC-END-MNT
remarks: --
remarks: If you want to peer with us, mail peering@cyso.net
remarks: We do not filter our peers unless they screw up.
remarks: We use maximum-prefix filters on all peers.
remarks: --
mnt-by: CYSO-MNT
created: 2002-09-16T13:40:41Z
last-modified: 2022-05-10T15:12:16Z
source: RIPE
organisation: ORG-CMH1-RIPE
org-name: Cyso Group B.V.
country: NL
reg-nr: 33287475
org-type: LIR
address: Wognumsebuurt 3
address: 1817 BH
address: Alkmaar
address: NETHERLANDS
phone: +31 72 751 3400
fax-no: +31 72 751 3401
admin-c: CYSO-RIPE
admin-c: SCAW666-RIPE
admin-c: TSW-RIPE
abuse-c: CYSO-RIPE
mnt-ref: RIPE-NCC-HM-MNT
mnt-ref: CYSO-MNT
mnt-by: RIPE-NCC-HM-MNT
mnt-by: CYSO-MNT
created: 2005-01-13T06:11:10Z
last-modified: 2026-05-13T07:18:37Z
source: RIPE # Filtered
role: Cyso Hosting B.V. Technical Role Account
address: Cyso Managed Hosting B.V.
address: Wognumsebuurt 3
address: 1817 BH Alkmaar
address: The Netherlands
phone: +31 72 7513400
fax-no: +31 72 7513401
admin-c: TSW-RIPE
admin-c: SCAW666-RIPE
admin-c: PIJN1-RIPE
tech-c: TSW-RIPE
tech-c: PIJN1-RIPE
tech-c: SCAW666-RIPE
nic-hdl: CYSO-RIPE
mnt-by: CYSO-MNT
abuse-mailbox: abuse@cyso.net
remarks: --
remarks: Abuse issues : abuse@cyso.net
remarks: Other technical issues : noc@cyso.net
remarks: --
created: 2002-08-05T11:12:02Z
last-modified: 2019-11-04T12:45:28Z
source: RIPE # Filtered
% This query was served by the RIPE Database Query Service version 1.122.1 (SHETLAND)