ASN Lookup Tool

Cyso Group B.V. cyso.net NL NL 4 Routes

AS Data

AS210728

AS210728Cyso Group B.V.

AS Number 210728
AS Name CYSO-AS-DE
Organization Cyso Group B.V. (org-cgb5-ripe)
Country NL
Website cyso.net
Number of IPv4 Routes 3
Number of IPv6 Routes 1
ASN type HOSTING
Allocation Status ASSIGNED
Registry RIPE
Date Allocated 2021-09-22

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Use ASN data for AS210728 in automation: routing intelligence, peering analysis, ownership checks, and network observability.

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IP Ranges

Route # IPs
194.26.103.0/24 256
213.173.39.0/24 256
77.246.243.0/24 256
2a11:2440::/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 'AS208189 - AS214345'

as-block:       AS208189 - AS214345
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:        2026-02-12T14:40:05Z
last-modified:  2026-02-12T14:40:05Z
source:         RIPE

% Information related to 'AS210728'

% Abuse contact for 'AS210728' is 'abuse@cyso.net'

aut-num:        AS210728
as-name:        CYSO-AS-DE
org:            ORG-CGB5-RIPE
descr:          CYSO-AMS
import:         from AS25151 accept ANY
export:         to AS25151 announce ANY
descr:          LEVEL3
import:         from AS3356 accept ANY
export:         to AS3356 announce AS-CYSO
descr:          DE-CIX
import:         from AS51531 accept ANY
export:         to AS51531 announce AS-CYSO
descr:          FUGA
import:         from AS44694 accept ANY
export:         to AS44694 announce ANY
admin-c:        CYSO-RIPE
tech-c:         CYSO-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         CYSO-MNT
created:        2021-09-22T12:43:19Z
last-modified:  2023-04-19T15:34:42Z
source:         RIPE

organisation:   ORG-CGB5-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:          +31727513400
admin-c:        CYSO-RIPE
tech-c:         CYSO-RIPE
abuse-c:        AR63564-RIPE
mnt-ref:        CYSO-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         CYSO-MNT
created:        2021-07-07T09:11:51Z
last-modified:  2026-05-13T07:28:56Z
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 (BUSA)

Parsed Whois Response

Peers

AS Number Description Country
AS12552 GlobalConnect AB SE
AS51907 Kanton Zug CH
AS213151 Christian Elsen DE
AS58057 Securebit AG CH
AS25220 equada network GmbH DE
AS20932 Service Telecom CH
AS39249 Netassist International EOOD BG
AS60602 Inovare-Prim SRL MD
AS38880 Micron21 Datacentre Pty Ltd AU
AS14537 Continent 8 LLC US
AS198150 SIACOM JSC GE
AS15943 wilhelm.tel GmbH DE
AS45352 IP ServerOne Solutions Sdn Bhd MY
AS198249 Ops One AG CH
AS8529 Zain Omantel International FZ-LLC AE
AS37468 Angola Cables AO
AS47957 Worldline IGSA SA FR
AS60144 3W Infra B.V. NL
AS34800 Securebit AG CH
AS200462 Lennart Seitz trading as "ETH-Services" DE
AS199524 G-Core Labs S.A. LU
AS34288 Kantonsschule Zug CH
AS64475 Freifunk Frankfurt am Main e.V. DE
AS47692 Nessus GmbH AT
AS53062 GGNET TELECOMUNICACOES LTDA BR
AS206735 Novelcomm LP GR
AS12859 BIT BV NL
AS13237 euNetworks GmbH DE
AS14840 BR.Digital Telecom BR
AS13058 serve-u - Buchholz und Suenderhauf GbR DE
AS21497 PrJSC "VF UKRAINE" UA
AS35360 Frederic Gargula CH
AS12735 TurkNet Iletisim Hizmetleri A.S. TR
AS559 SWITCH CH
AS203446 SMARTNET LIMITED GB
AS8758 Iway AG CH
AS4601 Antonios A. Chariton GR
AS8801 Rocket Fibre Ltd GB
AS35625 Eurofiber France SAS FR
AS20647 IPB Internet Provider in Berlin GmbH DE
AS25091 IP Max SA ZZ
AS1836 green.ch AG CH
AS1828 Unitas Global US
AS264479 Turbozone Internet BR
AS8283 Netwerkvereniging Coloclue NL
AS20932 Services Industriels de Geneve CH
AS142271 EWS DS Networks Inc PH
AS12741 Netia SA PL
AS45701 PT. Internet Madju Abad Milenindo ID
AS8717 A1 Bulgaria EAD BG
AS31027 GlobalConnect A/S DK
AS64289 Macarne.com US
AS209823 Enki Multimedia EURL FR
AS8298 IPng Networks GmbH CH
AS7713 Telekomunikasi Indonesia PT ID
AS28917 Fiord Networks, UAB LT
AS14630 Invesco Group Services, Inc. US
AS553 BelWue Koordination DE
AS60171 AFR-IX TELECOM S.A. ES
AS34177 Celeste SAS FR

Upstreams

AS Number Description Country
AS25151 Cyso Group B.V. NL
AS39249 Netassist International EOOD BG
AS39351 31173 Services AB SE
AS6939 Hurricane Electric LLC US
AS37468 Angola Cables AO
AS20764 CJSC RASCOM RU
AS47147 ANEXIA Internetdienstleistungs GmbH AT
AS24889 Monzoon Networks AG CH
AS12859 BIT BV NL
AS30781 Free Pro SAS FR
AS14840 BR.Digital Telecom BR
AS29632 Netassist International EOOD BG
AS24961 WIIT AG DE
AS8758 Iway AG CH
AS12779 IT.Gate S.p.A. IT
AS4601 Antonios A. Chariton GR
AS35625 Eurofiber France SAS FR
AS25091 IP Max SA ZZ
AS212024 Marc Schmitt FR
AS1836 green.ch AG CH
AS20485 Joint Stock Company TransTeleCom RU
AS8283 Netwerkvereniging Coloclue NL
AS34549 meerfarbig GmbH & Co. KG DE
AS28716 Retelit Digital Services S.p.A. IT
AS34927 iFog GmbH CH
AS1764 Next Layer Telekommunikationsdienstleistungs und Beratungs GmbH AT
AS6695 DE CIX Management GmbH DE
AS8298 IPng Networks GmbH CH
AS7713 Telekomunikasi Indonesia PT ID
AS6663 Euroweb Romania S.R.L. RO
AS33891 Core Backbone GmbH DE
AS34019 Hivane Association FR
AS34177 Celeste SAS FR
AS60171 AFR IX TELECOM S.A. ES
AS4455 IX Reach Ltd GB
AS8218 operated Upstreamnet gmbh FR
AS15958 CETIN Ltd. Belgrade RS
AS37100 SEACOM Limited MU
AS39120 Convergenze S.p.A. IT
AS6057 Administracion Nacional de Telecomunicaciones UY
AS1267 WIND TRE S.P.A. IT
AS5405 Inter.link GmbH DE
AS41327 Fiber Telecom S.p.A. IT
AS29691 Nine Internet Solutions AG CH
AS29208 Quantcom, a.s. CZ
AS35280 F5 Networks SARL FR
AS20562 Broadband Hosting B.V. NL
AS5713 SAIX NET ZA
AS3356 Level 3 Parent, LLC US
AS137409 GSL Networks Pty LTD AU
AS12577 MMC GmbH AT

Downstreams

AS Number Description Country
AS44694 Cyso Group B.V. NL

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Frequently Asked Questions

ASN AS210728 is an Autonomous System Number used to identify a network for BGP internet routing.
AS210728 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.