ASN Lookup Tool

Cyso Group B.V. cyso.net NL NL 29 Routes

AS Data

AS25151

AS25151Cyso Group B.V.

AS Number 25151
AS Name CYSO-AS
Organization Cyso Group B.V. (org-cmh1-ripe)
Country NL
Website cyso.net
Number of IPv4 Routes 26
Number of IPv6 Routes 3
ASN type HOSTING
Allocation Status ASSIGNED
Registry RIPE
Date Allocated 2002-09-16

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Use ASN data for AS25151 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route # IPs
62.129.149.0/24 256
45.134.223.0/24 256
37.46.136.0/21 2048
109.235.72.0/21 2048
93.94.224.0/21 2048
81.24.0.0/22 1024
2a05:6cc0::/29 ~634×10²⁷
81.24.10.0/23 512
85.158.200.0/21 2048
81.24.6.0/23 512
37.72.138.0/24 256
2.57.56.0/24 256
185.123.55.0/24 256
2001:678:c50::/48 ~1×10²⁴
80.85.160.0/23 512
81.24.8.0/22 1024
81.24.4.0/24 256
130.193.5.0/24 256
46.253.137.0/24 256
81.24.4.0/22 1024
80.85.161.0/24 256
85.158.205.0/24 256
185.54.112.0/22 1024
62.129.139.0/24 256
193.33.220.0/24 256
109.235.75.0/24 256
81.24.9.0/24 256
185.78.196.0/22 1024
2a01:518::/32 ~79×10²⁷

Raw Whois Response

% 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.
%       To receive output for a database update, use the "-B" flag.

% 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
import:         from AS6777 action pref=110; 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:        Arelion
import:         from AS1299 action pref=90; accept ANY
export:         to AS1299 announce AS-CYSO
remarks:        Colt
import:         from AS3356 action pref=90; accept ANY
export:         to AS3356 announce AS-CYSO
remarks:        Nawas
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:        Our current policy for accepting peers is you don't peer with the routeservers or you are part of the top 10 volume speakers . If you want to peer with us, mail peering@cyso.net
remarks:        We use maximum-prefix filters on all peers.
remarks:        --
mnt-by:         CYSO-MNT
created:        2002-09-16T13:40:41Z
last-modified:  2026-07-16T13:30:27Z
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 1.123 (DEXTER)

Parsed Whois Response

Peers

AS Number Description Country
AS51907 Kanton Zug CH
AS25220 equada network GmbH DE
AS39249 Netassist International EOOD BG
AS38880 Micron21 Datacentre Pty Ltd AU
AS31133 PJSC MegaFon RU
AS14537 Continent 8 LLC US
AS198150 SIACOM JSC GE
AS15943 wilhelm.tel GmbH DE
AS45352 IP ServerOne Solutions Sdn Bhd MY
AS56655 Gigahost AS NO
AS37468 Angola Cables AO
AS199524 G-Core Labs S.A. LU
AS49127 Asimo Networks B.V. NL
AS43727 JSC KVANT-TELEKOM RU
AS1000 LINK AMERICAN US
AS50673 Serverius Holding B.V. NL
AS53062 GGNET TELECOMUNICACOES LTDA BR
AS210728 Cyso Group B.V. NL
AS12859 BIT BV NL
AS206735 Novelcomm LP GR
AS3216 PJSC "Vimpelcom" RU
AS13237 euNetworks GmbH DE
AS42093 InterRacks B.V. NL
AS21497 PrJSC "VF UKRAINE" UA
AS12735 TurkNet Iletisim Hizmetleri A.S. TR
AS559 SWITCH CH
AS51873 Arcade Solutions AG CH
AS8801 Rocket Fibre Ltd GB
AS20647 IPB Internet Provider in Berlin GmbH DE
AS1031 PEER 1031 LLC US
AS1828 Unitas Global US
AS1299 Arelion Sweden AB SE
AS999 CORIX NETWORKS US
AS37497 Network Platforms (PTY) LTD ZA
AS38158 PT. Cyberindo Aditama ID
AS21215 UNITED GROUP NETWORK INFRASTRUCTURE d.o.o. Beograd RS
AS12741 Netia SA PL
AS215085 Maik Polman trading as PixelHosting NL
AS31027 GlobalConnect A/S DK
AS8298 IPng Networks GmbH CH
AS14630 Invesco Group Services, Inc. US
AS6777 Amsterdam Internet Exchange B.V. NL
AS8657 MEO - SERVICOS DE COMUNICACOES E MULTIMEDIA S.A. PT
AS4455 IX Reach Ltd GB
AS8218 Zayo Infrastructure France SA FR
AS15547 netplus.ch SA CH
AS24940 Hetzner Online GmbH DE
AS37100 SEACOM Limited MU
AS199938 Netzwerge GmbH DE
AS9002 RETN Limited GB
AS60900 Adrian Trifonov trading as Ssmidge Technologies CA
AS1764 Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH AT
AS41327 Fiber Telecom S.p.A. IT
AS35280 F5 Networks SARL FR
AS6823 3C1B Telekomunikasyon ve Internet Hiz. San. ve Tic. A.S. TR
AS207594 Connectivia S.r.l IT
AS132337 Axclusive SG
AS63927 RISE HK
AS199081 Lancom Ltd. GR
AS15535 Virtual Access Internet BV NL

Upstreams

AS Number Description Country
AS12552 GlobalConnect AB SE
AS7195 EDGEUNO S.A.S CO
AS39249 Netassist International EOOD BG
AS39351 31173 Services AB SE
AS6204 ZET.NET IP Transit RO
AS8359 MTS PJSC RU
AS22356 Durand do Brasil Ltda BR
AS56655 Gigahost AS NO
AS37468 Angola Cables AO
AS20764 CJSC RASCOM RU
AS15802 Emirates Integrated Telecommunications Company PJSC AE
AS37497 Network Platforms PTY LTD ZA
AS47147 ANEXIA Internetdienstleistungs GmbH AT
AS50673 Serverius Holding B.V. NL
AS29169 GANDI SAS FR
AS3216 PJSC Vimpelcom RU
AS14840 BR.Digital Telecom BR
AS29632 Netassist International EOOD BG
AS24961 WIIT AG DE
AS12779 IT.Gate S.p.A. IT
AS1031 PEER 1031 LLC US
AS30844 Liquid Telecommunications Ltd GB
AS1299 Arelion Sweden AB SE
AS200020 Stichting NBIP NaWas NL
AS21215 UNITED GROUP NETWORK INFRASTRUCTURE d.o.o. Beograd RS
AS39686 Eurofiber Nederland BV NL
AS34927 iFog GmbH CH
AS1764 Next Layer Telekommunikationsdienstleistungs und Beratungs GmbH AT
AS25091 IP Max SA CH
AS42708 Glesys AB SE
AS8298 IPng Networks GmbH CH
AS48362 Stadtwerke Feldkirch AT
AS6663 Euroweb Romania S.R.L. RO
AS2914 NTT America, Inc. US
AS33891 Core Backbone GmbH DE
AS34019 Hivane Association FR
AS34177 Celeste SAS FR
AS6777 Amsterdam Internet Exchange B.V. NL
AS4455 IX Reach Ltd GB
AS50629 LWLcom GmbH DE
AS15958 CETIN Ltd. Belgrade RS
AS61049 Exascale Ltd GB
AS37100 SEACOM Limited MU
AS39120 Convergenze S.p.A. IT
AS9002 RETN Limited GB
AS29075 IELO LIAZO SERVICES SAS FR
AS6057 Administracion Nacional de Telecomunicaciones UY
AS1267 WIND TRE S.P.A. IT
AS5405 Inter.link GmbH DE
AS3214 xTom GmbH DE
AS41327 Fiber Telecom S.p.A. IT
AS15576 NTS workspace AG CH
AS13194 UAB Bite Lietuva LT
AS35280 F5 Networks SARL FR
AS9044 BSE Software GmbH CH
AS5713 SAIX NET ZA
AS3356 Level 3 Parent, LLC US
AS137409 GSL Networks Pty LTD AU
AS12637 SEEWEB s.r.l. IT

Downstreams

AS Number Description Country
AS210728 Cyso Group B.V. NL
AS15535 Virtual Access Internet BV NL

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Frequently Asked Questions

ASN AS25151 is an Autonomous System Number used to identify a network for BGP internet routing.
AS25151 is listed under Cyso Group B.V..
Peers are lateral network interconnections, upstreams are transit providers, and downstreams are customer networks receiving connectivity.
Routes and IP ranges are the network prefixes announced by the ASN on the internet and show the address space it originates.
WHOIS provides registration and contact context for ASN ownership, administration, and operational reference.
This page previews large ASN datasets. Use See more to load additional rows, and upgrade your plan to view complete peer, route, upstream, and downstream data.