Autonomous System details

AS25151

Cyso Group B.V. · cyso.com

Netherlands

BitTorrent

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AS25151 – Cyso Group B.V.

Field	Value
Country	Netherlands
Website	cyso.com
Hosted domains	55,689
IPv4 addresses	15,872
IPv6 addresses	713,054,671,554,198,652,971,070,259,200
ASN type	Hosting
Registry	ripe
Allocated	23 years ago on Sep 16, 2002
Updated	4 years ago on May 10, 2022

Netblock	Company	Num of IPs
37.46.136.0/21	Cyso Group B.V.	2,048
85.158.200.0/21	Cyso Group B.V.	2,048
93.94.224.0/21	Cyso Group B.V.	2,048
109.235.72.0/21	Cyso Group B.V.	2,048
81.24.0.0/22	Cyso Group B.V.	1,024
81.24.4.0/22	Cyso Group B.V.	1,024
81.24.8.0/22	Cyso Group B.V.	1,024
185.54.112.0/22	Cyso Group B.V.	1,024
185.78.196.0/22	Cyso Group B.V.	1,024
80.85.160.0/23	Het ExtraNet NETBLOCK1	512
81.24.6.0/23	Cyso Group B.V.	512
81.24.10.0/23	Cyso Group B.V.	512
2.57.56.0/24	Realtime Register B.V.	256
37.72.138.0/24	Harlem Next B.V.	256
45.134.223.0/24	Bitmaster Online BV	256
62.129.139.0/24	Hosting.nl	256
62.129.149.0/24	Hosting.nl	256
80.85.161.0/24	Het ExtraNet NETBLOCK1	256
81.24.4.0/24	Cyso Group B.V.	256
81.24.9.0/24	Cyso Group B.V.	256
130.193.5.0/24	Cyso Group B.V.	256
185.123.55.0/24	Bitmaster Online B.V.	256
193.33.220.0/24	Ronald Pool is trading as Video en Media	256

Netblock	Company
2a05:6cc0::/29	Cyso Group B.V.
2a01:518::/32	Cyso Group B.V.
2001:678:c50::/48	Realtime Register B.V.

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WHOIS Details

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                                                ASHandle:       AS25151
                                                OrgID:          AS25151
                                                ASName:         AS25151
                                                ASNumber:       AS25151
                                                RegDate:        0000-00-00
                                                Updated:        0000-00-00
                                                TechHandle:     AA00-AAAA
                                                Source:         AAAA

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Hosted Domains

There are 55,689 domain names hosted across 794 IP addresses on this ASN.

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IP Address	Domain	Domains on this IP
109.235.74.225	██████████	15,681
37.46.140.12	██████████	8,350
37.46.140.9	██████████	2,300
37.46.140.23	██████████	2,101
37.46.140.24	██████████	1,853
37.46.140.16	██████████	1,547
109.235.75.114	██████████	1,543
93.94.231.166	██████████	1,495
37.46.140.26	███████	1,376
37.46.140.20	█████████	1,274

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Peers

There are 135 peers for this ASN.

Peers	Name
AS1031	PEER 1031 LLC
AS1103	SURF B.V.
AS1140	Stichting Internet Domeinregistratie Nederland
AS12552	GlobalConnect AB
AS12637	SEEWEB s.r.l.
AS1267	WIND TRE S.P.A.
AS12713	OTEGlobe
AS12779	IT.Gate S.p.A.
AS12859	BIT BV
AS12969	Vodafone Iceland
AS1299	Arelion Sweden AB
AS13030	Init7 (Switzerland) Ltd.
AS132337	Axclusive
AS13237	euNetworks GmbH
AS137409	GSL Networks Pty LTD
AS14537	Continent 8 LLC
AS14630	Invesco Group Services, Inc.
AS14840	BR.Digital Telecom
AS14907	Wikimedia Foundation Inc.
AS15535	Virtual Access Internet BV
AS15547	netplus.ch SA
AS15576	NTS workspace AG
AS15605	Connesi s.p.a.
AS15958	CETINdoo-NET
AS17639	Converge ICT Solutions Inc.
AS1764	Next Layer Telekommunikationsdienstleistungs- und Beratungs GmbH
AS18106	Viewqwest Pte Ltd
AS1828	Unitas Global
AS198150	SIACOM JSC
AS199524	G-Core Labs S.A.
AS199938	Netzwerge GmbH
AS20764	CJSC RASCOM
AS20932	Services Industriels de Geneve
AS210728	CYSO-AMS
AS21215	UNITED GROUP NETWORK INFRASTRUCTURE d.o.o. Beograd
AS212483	LEVEL EIGHTY-SIX COMMUNICATIONS LTD
AS213241	TECHIT.BE SRL
AS22356	Durand do Brasil Ltda
AS24482	SG.GS
AS24961	WIIT AG
AS25091	IP-Max SA
AS25160	Vorboss Limited
AS25220	equada network GmbH
AS263152	MIGO TELECOM
AS271253	LINK BRASIL TELECOMUNICACOES LTDA
AS28917	Fiord Networks, UAB
AS29049	Delta Telecom Ltd
AS29075	IELO Main Network
AS2914	NTT America, Inc.
AS29140	Hostserver GmbH
AS29169	GANDI SAS
AS293	ESnet
AS30781	Free Pro SAS
AS30844	Liquid Telecommunications Ltd
AS31027	GlobalConnect A/S
AS3214	xTom GmbH
AS3216	PJSC "Vimpelcom"
AS3333	Reseaux IP Europeens Network Coordination Centre (RIPE NCC)
AS3356	Level 3 Parent, LLC
AS33891	Core-Backbone GmbH
AS34019	Hivane Association
AS34177	CELESTE SAS
AS34288	Kantonsschule Zug
AS34927	iFog GmbH
AS35280	F5 Networks SARL
AS36236	NetActuate, Inc
AS36994	Vodacom
AS37100	SEACOM Limited
AS37282	Mainone Cable Company
AS37468	Angola Cables
AS37497	Network Platforms (PTY) LTD
AS37721	Virtual Technologies & Solutions
AS38880	Micron21 Datacentre Pty Ltd
AS39120	Convergenze S.p.A.
AS39122	Blacknight Internet Solutions Limited
AS39351	31173 Services AB
AS41327	Fiber Telecom S.p.A.
AS4230	CLARO S.A.
AS42541	Fiberby ApS
AS42708	Glesys AB
AS43727	KVANT TELECOM
AS43733	Viva Armenia CJSC
AS4455	IX Reach Ltd
AS44901	Belcloud LTD
AS45352	IP ServerOne Solutions Sdn Bhd
AS45437	Real World - The Core
AS45489	Sri Lanka Telecom PLC, GLobal Peering
AS47147	Anexia Cloud Solutions GmbH
AS47957	Worldline IGSA SA
AS48185	team.blue NV
AS48314	Michael Sebastian Schinzel trading as IP-Projects GmbH & Co. KG
AS48362	Stadtwerke Feldkirch
AS48919	UACITY Ltd.
AS49544	i3D.net B.V
AS49605	Digital Telecommunication Services S.r.l.
AS50300	CustodianDC Limited
AS50629	LWLcom GmbH
AS50673	Serverius
AS50763	Robert McKay
AS51088	A2B IP B.V.

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Upstreams

There are 4 upstreams for this ASN.

upstreams	Name
AS1299	Arelion Sweden AB
AS2914	NTT America, Inc.
AS3356	Level 3 Parent, LLC
AS6939	Hurricane Electric LLC

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ASN API & Database

Downstreams

There are 2 downstreams for this ASN.

Downstreams	Name
AS15535	Virtual Access Internet BV
AS210728	CYSO-AMS

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ASN API & Database

Pingable IPs

59 IPs in this ASN replied to an ICMP ping during our most recent internet scan. Learn more.

IP Address	ASN	Details
81.24.6.0	AS25151 Cyso Group B.V.	`0.53ms` from Amsterdam, NL
81.24.8.127	AS25151 Cyso Group B.V.	`0.40ms` from Amsterdam, NL
81.24.11.255	AS25151 Cyso Group B.V.	`0.42ms` from Amsterdam, NL
37.46.136.2	AS25151 Cyso Group B.V.	`0.65ms` from Amsterdam, NL
109.235.79.115	AS25151 Cyso Group B.V.	`0.52ms` from Amsterdam, NL
2001:678:c50::1	AS25151 Cyso Group B.V.	`0.77ms` from Amsterdam, NL
109.235.73.183	AS25151 Cyso Group B.V.	`0.45ms` from Amsterdam, NL
37.46.143.1	AS25151 Cyso Group B.V.	`0.49ms` from Amsterdam, NL
2a01:518:1072::208	AS25151 Cyso Group B.V.	`0.99ms` from Amsterdam, NL
2a01:518:1093::1	AS25151 Cyso Group B.V.	`0.71ms` from Amsterdam, NL
37.46.138.98	AS25151 Cyso Group B.V.	`0.60ms` from Amsterdam, NL
85.158.207.1	AS25151 Cyso Group B.V.	`0.70ms` from Amsterdam, NL
185.123.55.1	AS25151 Cyso Group B.V.	`0.75ms` from Amsterdam, NL
2a01:518:1103::70	AS25151 Cyso Group B.V.	`1.16ms` from Amsterdam, NL
81.24.7.255	AS25151 Cyso Group B.V.	`0.48ms` from Amsterdam, NL
81.24.1.1	AS25151 Cyso Group B.V.	`0.86ms` from Amsterdam, NL
85.158.202.1	AS25151 Cyso Group B.V.	`0.67ms` from Amsterdam, NL
109.235.77.49	AS25151 Cyso Group B.V.	`0.58ms` from Amsterdam, NL
2.57.56.1	AS25151 Cyso Group B.V.	`0.88ms` from Amsterdam, NL
85.158.204.161	AS25151 Cyso Group B.V.	`0.43ms` from Amsterdam, NL
109.235.72.130	AS25151 Cyso Group B.V.	`0.62ms` from Amsterdam, NL
2a05:6cc1::	AS25151 Cyso Group B.V.	`0.41ms` from Amsterdam, NL
2a01:518:1067::104	AS25151 Cyso Group B.V.	`1.53ms` from Amsterdam, NL
81.24.10.0	AS25151 Cyso Group B.V.	`0.52ms` from Amsterdam, NL
80.85.161.1	AS25151 Cyso Group B.V.	`0.69ms` from Amsterdam, NL

Other Pingable IPs

Below is a random selection of 25 IPs that replied to an ICMP ping during our most recent internet scan.

IP Address	ASN	Details
20.114.233.79	AS8075 Microsoft Corporation	`0.28ms` from Boydton, US
218.89.36.143	AS4134 CHINANET-BACKBONE	`10.46ms` from Chengdu, CN
93.119.176.223	AS39347 STYLISH BY A&L SRL	`0.34ms` from Constanţa, RO
54.171.34.127	AS16509 Amazon.com, Inc.	`0.25ms` from Dublin, IE
217.250.59.175	AS3320 Deutsche Telekom AG	`2.84ms` from Frankfurt am Main, DE
188.68.8.47	AS50596 Informatsionnye Tekhnologii LLC	`5.34ms` from Moscow, RU
115.229.185.207	AS4134 CHINANET-BACKBONE	`5.98ms` from Ningbo, CN
187.94.177.63	AS28649 Desktop Sigmanet Comunicação Multimídia SA	`2.40ms` from Osasco, BR
176.141.174.15	AS5410 Bouygues Telecom SA	`1.93ms` from Paris, FR
90.176.200.175	AS5610 O2 Czech Republic, a.s.	`6.04ms` from Prague, CZ
80.178.204.239	AS12400 Partner Communications Ltd.	`1.96ms` from Tel Aviv, IL
207.65.240.159	AS2527 Sony Network Communications Inc.	`1.95ms` from Tokyo, JP
62.45.189.255	AS15435 DELTA Fiber Nederland B.V.	`2.30ms` from Amsterdam, NL
44.254.201.47	AS16509 Amazon.com, Inc.	`0.14ms` from Boardman, US
183.215.56.47	AS56047 China Mobile communications corporation	`2.75ms` from Changsha, CN
92.238.209.207	AS5089 Virgin Media Limited	`10.40ms` from London, GB
80.136.136.159	AS3320 Deutsche Telekom AG	`6.43ms` from Nuernberg, DE
138.2.32.79	AS31898 Oracle Corporation	`0.20ms` from Osaka, JP
93.149.114.15	AS30722 Vodafone Italia S.p.A.	`5.46ms` from Rome, IT
52.220.85.239	AS16509 Amazon.com, Inc.	`0.12ms` from Singapore, SG
61.168.19.63	AS4837 CHINA UNICOM China169 Backbone	`0.64ms` from Zhengzhou, CN
98.219.21.223	AS7922 Comcast Cable Communications, LLC	`4.76ms` from Atlanta, US
213.160.165.143	AS6855 Slovak Telekom, a.s.	`0.74ms` from Bratislava, SK
35.232.227.127	AS396982 Google LLC	`0.11ms` from Council Bluffs, US
202.118.211.255	AS4538 China Education and Research Network Center	`15.88ms` from Dalian, CN

Traceroute

Below is a recent traceroute taken from the IPinfo ProbeNet to an IP in this ASN. Learn more.

traceroute -a -n -q1 -f4 85.158.207.4

traceroute to 85.158.207.4 (85.158.207.4): 64 hops max, 52 byte packets

4 [AS25151] 37.46.140.200 1.019 ms

5 [AS25151] 85.158.207.4 1.161 ms

Measurement taken from

IPinfo ProbeNet in Amsterdam, NL

On January 9th 2026

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What is an ASN?

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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