AS25151 -

Cyso Management B.V.

AS25151 Cyso Management B.V.








IP Addresses




Network Speed

We don't currently have any network speed data for this network.

Hosted Domains

There are 198,130 domain names hosted across 1,728 IP addresses on this ASN.

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Whois Details

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

aut-num:        AS25151
org:            ORG-CMH1-RIPE
as-name:        CYSO-AS
remarks:        - Peering Sessions
remarks:        AMS-IX
import:         from AS25151:AS-AMS-IX-PEERS action pref=110; accept ANY AND NOT {}
export:         to AS25151:AS-AMS-IX-PEERS announce AS-CYSO
remarks:        AMS-ix route server
import:         from AS6777 accept ANY
export:         to AS6777 action community .= {6777:6777}; announce AS-CYSO
remarks:        NL-IX
import:         from AS25151:AS-NL-IX-PEERS action pref=110; accept ANY AND NOT {}
export:         to AS25151:AS-NL-IX-PEERS announce AS-CYSO
remarks:        Open Peering
import:         from AS20562 action pref=90; accept ANY
export:         to AS20562 announce AS-CYSO
remarks:        nLayer
import:         from AS4436 action pref=90; accept ANY
export:         to AS4436 announce AS-CYSO
remarks:        Level3
import:         from AS3356 action pref=90; accept ANY
export:         to AS3356 announce AS-CYSO
remarks:        Cogent
import:         from AS174 action pref=90; accept ANY
export:         to AS174 announce AS-CYSO
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
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:  2017-11-15T09:19:44Z
source:         RIPE

organisation:   ORG-CMH1-RIPE
org-name:       Cyso Management B.V.
org-type:       LIR
address:        Luttik Oudorp 11
address:        1811 MT
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:  2016-09-09T11:59:13Z
source:         RIPE

role:           Cyso Hosting B.V. Technical Role Account
address:        Cyso Managed Hosting B.V.
address:        Luttik Oudorp 11-13
address:        1811 MT 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
remarks:        --
remarks:        Abuse issues :
remarks:        Other technical issues :
remarks:        --
created:        2002-08-05T11:12:02Z
last-modified:  2018-05-02T09:41:38Z
source:         RIPE

IP Address Ranges

Netblock Description Num IPs Cyso Management B.V. 2,048 Cyso Hosting B.V. 256 Your Holding B.V. 1,024 Yourhosting VPS 256 Cyso Management B.V. 1,024 SQR B.V. 1,024 Video & Media Netherlands 512 HCB Media BV. 256 Cyso Hosting B.V. 512 Cyso Management B.V. 2,048
Netblock Description
2001:67c:1724::/48 HCB Media BV.
2a01:518::/32 Cyso Management B.V.
2a01:b940::/32 Your Holding B.V.
2a04:6bc0::/29 Your Holding B.V.
2a04:8b80::/29 Resello B.V.
2a05:6cc0::/29 SQR B.V.

Network Speed

We don't currently have any network speed data for this network.

Hosted Domains

There are 198,130 domain names hosted across 1,728 IP addresses on this ASN. Checkout our API to access full domain hosting information.

IP Address Domain Domains on this IP 48,224 3,635 3,477 3,338 3,045 2,732 2,473 2,213 2,045 2,031


There are 93 peers for this ASN.

Pacnet Global Ltd AS10026
SURFnet bv AS1103
VTX Services SA AS12350
IP-Only Networks AB AS12552
SEEWEB s.r.l. AS12637
Wind Telecomunicazioni SpA AS1267
IT.Gate S.p.A. AS12779
BIT BV AS12859
Fastweb SpA AS12874
Init7 (Switzerland) Ltd. AS13030


There are 4 upstreams for this ASN.

Cogent Communications AS174
Stichting NBIP-NaWas AS200020
Level 3 Parent, LLC AS3356
Hurricane Electric LLC AS6939


There are no downstreams for this ASN.

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Autonomous System Numbers (ASNs) are assigned to entities such as Internet Service Providers and other large organizations that control blocks of IP addresses. This network page, and the organization field that's shown on the main IP address information page and also returned in the geolocation API are based on the ASN.

The ASN details will often correspond to the IP address owner, but for smaller organizations it may be that organization's parent, or their ISP.

Find out more about AS25151 at robtex.

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