View

If you are scraping this block for the prefixes that a AS originates, please use the data dumps in https://bgp.tools/kb/api and cache them

	Prefix	Description
	2.57.56.0/24	Realtime Register B.V.
	37.46.136.0/21	Cyso Group B.V.
	37.72.138.0/24	Harlem Next B.V.
	45.134.223.0/24	Bitmaster Online BV
	46.253.137.0/24	Cyso Group B.V.
	62.129.139.0/24	Hosting.nl
	62.129.149.0/24	Hosting.nl
	80.85.160.0/23	Het ExtraNet NETBLOCK1
	80.85.161.0/24	Het ExtraNet NETBLOCK1
	81.24.0.0/22	-
	81.24.4.0/22	-
	81.24.4.0/24	-
	81.24.6.0/23	-
	81.24.8.0/22	-
	81.24.9.0/24	-
	81.24.10.0/23	-
	85.158.200.0/21	Cyso Group B.V.
	93.94.224.0/21	Cyso Group B.V.
	109.235.72.0/21	Cyso Group B.V.
	130.193.5.0/24	Cyso Group B.V.
	185.54.112.0/22	Cyso Group B.V.
	185.78.196.0/22	Cyso Group B.V.
	185.123.55.0/24	Bitmaster Online B.V.
	193.33.220.0/24	Ronald Pool is trading as "Video en Media"
	2001:678:c50::/48	Realtime Register B.V.
	2a01:518::/32	Cyso Group B.V.
	2a05:6cc0::/29	Cyso Group B.V.

---

Network Policy

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Prefixes in selected policy

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6
	AS1299	Arelion (fka. Telia Carrier)	✔	✔
	AS3356	Lumen (Level 3)	✔	✔
	AS2914	NTT America, Inc.	✔	✔

---

Peers

	ASN	Description	IPv4	IPv6
	AS1299	Arelion (fka. Telia Carrier)	✔	✔
	AS3356	Lumen (Level 3)	✔	✔
	AS2914	NTT America, Inc.	✔	✔
	AS5405	Inter.link GmbH	✔	✔
	AS15535	Virtual Access Internet BV	✔	✘
	AS137409	GSL Networks Pty LTD	✔	✔
	AS210728	Cyso Group B.V.	✔	✘
	AS34927	iFog GmbH	✔	✔
	AS61049	Exascale Ltd	✔	✔
	AS6777	AMS-IX Route Servers	✔	✔
	AS20562	Open Peering (Broadband Hosting B.V.)	✔	✔
	AS24940	Hetzner Online GmbH	✔	✔
	AS33891	Core-Backbone GmbH	✔	✔
	AS8283	Netwerkvereniging Coloclue	✔	✔
	AS24961	WIIT AG (fka. myLoc Managed IT AG)	✔	✔
	AS50629	LWLcom GmbH	✔	✔
	AS25091	IP-Max SA	✔	✔
	AS6204	INTERKVM HOST SRL	✔	✔
	AS52025	ParadoxNetworks Limited	✔	✔
	AS34019	Hivane Association	✔	✔
	AS8218	Zayo Europe	✔	✔
	AS7195	EdgeUno	✔	✔
	AS9031	EDPNET Belgium BV	✔	✔
	AS37100	SEACOM Limited	✔	✔
	AS9136	WOBCOM GmbH	✔	✔
	AS215638	Cilix Limited	✔	✔
	AS199524	Gcore S.A.	✔	✔
	AS47147	Anexia Cloud Solutions GmbH	✔	✘
	AS52320	V.tal (GlobeNet)	✔	✔
	AS3462	HiNet (Chunghwa Telecom)	✔	✘
	AS14840	BR.DIGITAL	✔	✔
	AS8298	IPng Networks GmbH	✔	✔
	AS49544	i3D.net B.V	✔	✔
	AS56655	Gigahost AS	✔	✘
	AS20495	We Dare B.V.	✔	✔
	AS200132	Peter-Paul Maria Kurstjens	✔	✘
	AS31027	GlobalConnect A/S	✔	✔
	AS3214	xTom GmbH	✔	✔
	AS42708	Glesys AB	✔	✘
	AS30781	Free Pro SAS	✔	✘
	AS42184	TKRZ Stadtwerke GmbH	✔	✔
	AS11967	Hop179 OU	✔	✔
	AS13237	euNetworks GmbH	✔	✔
	AS213576	Robert Weir	✔	✔
	AS207176	OPENFIBER B.V.	✔	✔
	AS211623	NAML B.V.	✔	✔
	AS21263	TeleData GmbH	✔	✔
	AS31500	Global Network Management Inc	✔	✘
	AS39351	31173 Services AB	✔	✔
	AS37468	Angola Cables	✔	✔
	AS37497	Network Platforms (PTY) LTD	✔	✘
	AS30844	Liquid Intelligent Technologies	✔	✘
	AS22356	Durand do Brasil Ltda	✔	✔
	AS49127	Asimo Networks B.V.	✔	✔
	AS12400	Partner Communications Ltd.	✔	✘
	AS64289	Macarne.com	✔	✔
	AS9498	Bharti Airtel Ltd.	✔	✔
	AS50673	Serverius Holding B.V.	✔	✔
	AS29075	IELO-LIAZO SERVICES SAS	✔	✘
	AS42541	Fiberby ApS	✔	✔
	AS1764	Next Layer Telecommunications	✔	✔
	AS6206	Netrouting B.V.	✔	✔
	AS12779	IT.Gate S.p.A.	✔	✔
	AS55850	Mercury NZ Limited	✔	✔
	AS39122	Blacknight Internet Solutions Limited	✔	✔
	AS39686	Eurofiber Nederland BV	✔	✔
	AS13101	TNG Stadtnetz GmbH	✔	✔
	AS200052	Feral.io Ltd	✔	✘
	AS212477	RoyaleHosting B.V.	✔	✘
	AS212855	Jelle Luteijn	✔	✔
	AS12552	GlobalConnect (IP-Only)	✔	✔
	AS3216	Vimpelcom PJSC	✔	✘
	AS212635	Jurrian van Iersel	✔	✔
	AS328366	FIRSTNET TECHNOLOGY SERVICES (PTY) LTD	✔	✘
	AS1828	PacketFabric / Unitas Global	✔	✔
	AS213052	Bram Wittendorp trading as BittenBytes	✔	✔
	AS15576	NTS workspace AG	✔	✔
	AS48927	ESEVEN DevOps GmbH	✔	✔
	AS24482	SG.GS	✔	✔
	AS44684	Mythic Beasts Ltd	✔	✔
	AS35280	F5 Networks SARL	✔	✔
	AS48362	Stadtwerke Feldkirch	✔	✔
	AS16276	OVH SAS	✔	✔
	AS63927	RISE	✔	✔
	AS56987	ABACLOUDA SAS	✔	✔
	AS41960	Nextpertise B.V.	✔	✔
	AS42093	InterRacks B.V.	✔	✔
	AS210645	DOMINIK DOBROWOLSKI	✔	✔
	AS54148	Dynamic Quantum Networks	✔	✔
	AS207487	Gustav Caplan	✔	✔
	AS216107	Noah van der Aa trading as Frumentum Media	✔	✔
	AS40776	TaoNet	✔	✔
	AS8966	Etisalat (E&)	✔	✘
	AS1103	SURF B.V.	✔	✔
	AS38082	True International Gateway Co., Ltd.	✔	✘
	AS29169	GANDI SAS	✔	✘
	AS56665	Proximus Luxembourg S.A.	✔	✔
	AS25160	Vorboss Limited	✔	✔
	AS212895	Johannes Ernst	✔	✘
	AS203489	WiMore S.r.l.	✔	✔
	AS8881	1&1 Versatel GmbH	✔	✔
	AS31477	Duocast B.V.	✔	✔
	AS328748	Agile Solutions Provider (PTY) LTD	✔	✔
	AS60900	Adrian Trifonov trading as Ssmidge Technologies	✔	✔
	AS52210	Accuris Technologies Ltd.	✔	✔
	AS2119	Telenor Norge AS	✔	✘
	AS14907	Wikimedia Foundation Inc.	✔	✔
	AS47689	Pudu, LLC	✔	✔
	AS45701	PT Internet Madju Abad Milenindo	✔	✘
	AS8772	NetAssist LLC	✔	✔
	AS199938	Netzwerge GmbH	✔	✔
	AS34170	Aztelekom LLC	✔	✔
	AS215248	Bastiaan Mathijs Brink	✔	✔
	AS20764	CJSC RASCOM	✔	✔
	AS49121	Infinity Telecom, s.r.o.	✔	✔
	AS48314	IP-Projects GmbH & Co. KG	✔	✔
	AS51184	Fonira Telekom GmbH	✔	✔
	AS4651	The Communications Authority of Thailand (CAT)	✔	✔
	AS215085	Maik Polman trading as PixelHosting	✔	✔
	AS64049	Reliance Jio Infocomm Pte. Ltd.	✔	✘
	AS199752	Go-Trex Holding BV	✔	✘
	AS16637	MTN SA (Bayobab)	✔	✔
	AS1031	PEER 1031 LLC	✔	✘
	AS34177	Celeste SAS	✔	✔
	AS34309	Link11 GmbH	✔	✘
	AS263152	MIGO TELECOM	✔	✘
	AS57344	Telehouse EAD	✔	✘
	AS53062	ALT | GRUPO BRASIL TECPAR	✔	✘
	AS41327	Fiber Telecom S.p.A.	✔	✘
	AS31133	MegaFon PJSC	✔	✘
	AS6823	3C1B Telekomunikasyon ve Internet Hiz. San. ve Tic. A.S.	✔	✘
	AS202585	Nick Bouwhuis	✔	✔
	AS29632	Netassist International EOOD	✘	✔
	AS215296	Raoul Brouns is trading as LowPing NL	✔	✔
	AS214380	Tim de Boer trading as tim427.net	✔	✔
	AS2635	Automattic, Inc	✔	✔
	AS12859	BIT BV	✔	✔
	AS207113	Cyrus Mbitao trading as Wofbit Networks	✔	✔
	AS34953	RelAix Networks GmbH	✔	✔
	AS51088	A2B IP B.V.	✔	✘
	AS36236	NetActuate, Inc	✔	✔
	AS46427	SF Innovations Inc.	✔	✔
	AS12637	Seeweb s.r.l.	✔	✔
	AS213449	Jann-Ole Wagenaar	✔	✔
	AS39637	ADES BV	✔	✘
	AS215724	Edgevana, Inc.	✔	✘
	AS51392	Fusioned Ltd	✔	✔
	AS45014	Nuco Technologies Ltd	✔	✔
	AS32590	Valve Corporation	✔	✔
	AS212591	N1 Solutions B.V. trading as PLTFRMS	✔	✔
	AS36994	Vodacom	✔	✘
	AS21013	eww ag	✔	✘
	AS20473	The Constant Company, LLC	✔	✔
	AS34696	MISMELINK NETWORKS, SL	✔	✔
	AS8657	MEO International Backbone	✔	✘
	AS51345	HUGO REGIBO	✔	✔
	AS271253	LINK BRASIL TELECOMUNICACOES LTDA	✔	✔
	AS6057	Administracion Nacional de Telecomunicaciones	✔	✔
	AS210752	Global Legal Entity Identifier Foundation	✔	✔
	AS39120	Convergenze S.p.A.	✔	✔
	AS61624	ISPSHIELD (InfNOC Tecnologia)	✔	✔
	AS199081	Lancom Ltd.	✔	✔
	AS20766	Association "Gitoyen"	✔	✔
	AS8767	M-net Telekommunikations GmbH	✔	✔
	AS12713	Ote SA (Hellenic Telecommunications Organisation)	✔	✘
	AS42295	TBISS Ltd	✔	✔
	AS8932	Ucom CJSC	✔	✔
	AS35320	Eurotranstelecom Ltd	✔	✔
	AS2854	LLC Orange Business Services	✔	✔
	AS206014	SARL IPSET	✔	✔
	AS216333	NetDev UG (haftungsbeschraenkt)	✔	✔
	AS398465	Rackdog LLC	✔	✘
	AS38158	PT Cyberindo Aditama	✔	✘
	AS8359	MTS PJSC	✔	✘
	AS38965	Rick van der Sterren trading as HostIn	✔	✘
	AS49559	A-Systems Sp. z o.o.	✔	✘
	AS8315	WorldStream B.V.	✔	✘
	AS138121	PT Mora Telematika Indonesia Tbk	✔	✘
	AS214757	Jakub Krsa	✘	✔
	AS5713	Telkom SA Ltd.	✔	✘
	AS207315	Stichting Internet Archive	✔	✘
	AS8473	Bahnhof AB	✔	✘
	AS49600	NEAR IP, S.L.	✔	✘
	AS132337	Axclusive	✔	✘
	AS131219	Indosat Singapore Pte. Ltd.	✔	✘
	AS9299	PLDT (Philippine Long Distance Telephone Company)	✔	✘
	AS15943	wilhelm.tel GmbH	✔	✘
	AS263903	INFORBARRA TELECOM	✔	✘
	AS18106	Viewqwest Pte Ltd	✔	✘
	AS44901	Belcloud LTD	✔	✘
	AS4455	IX Reach Ltd	✔	✘
	AS31319	ESTRACOM SPA	✔	✘
	AS9050	Orange Romania S.A.	✔	✘
	AS209768	white2net Srl	✔	✘
	AS29049	Delta Telecom Ltd	✔	✘
	AS14537	Continent 8 LLC	✔	✘
	AS206735	Novelcomm LP	✔	✘
	AS21215	UNITED GROUP NETWORK INFRASTRUCTURE d.o.o. Beograd	✔	✘
	AS28283	Adyl Telecom	✔	✘
	AS56630	Melbikomas UAB	✔	✘
	AS15830	Equinix, Inc.	✔	✘
	AS8801	Rocket Fibre Ltd	✔	✔
	AS43350	NForce Entertainment B.V.	✔	✘
	AS8732	JSC Comcor	✘	✔
	AS8529	Zain Omantel International FZ-LLC	✘	✔
	AS1820	WNET TELECOM USA Corp.	✔	✔
	AS201616	Theo Holroyd	✘	✔
	AS4230	Claro (Embratel)	✘	✔
	AS215577	Lucas van Beek	✘	✔
	AS39249	Netassist International EOOD	✘	✔
	AS29119	AIRE NETWORKS DEL MEDITERRANEO SL UNIPERSONAL	✔	✘
	AS6663	Türk Telekom International	✔	✘
	AS28917	Fiord Networks, UAB	✔	✘
	AS263444	Open X Tecnologia Ltda	✔	✘
	AS213241	TECHIT.BE SRL	✘	✔
	AS559	SWITCH	✘	✔
	AS216265	ARISTO NETWORKS LTD	✘	✔
	AS29390	Netassist International EOOD	✘	✔
	AS214675	Hidenori Matsuo	✘	✔
	AS37721	Virtual Technologies & Solutions	✘	✔
	AS293	ESnet	✔	✘
	AS55818	Matrix Cable Internet Exchange	✔	✘
	AS61568	ALOO TELECOM - FSF TECNOLOGIA SA	✔	✘

---

Downstreams

	ASN	Description	IPv4	IPv6
	AS15535	Virtual Access Internet BV	✔	✘
	AS210728	Cyso Group B.V.	✔	✘

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:        DUMY-RIPE
tech-c:         DUMY-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
remarks:        ****************************
remarks:        * THIS OBJECT IS MODIFIED
remarks:        * Please note that all data that is generally regarded as personal
remarks:        * data has been removed from this object.
remarks:        * To view the original object, please query the RIPE Database at:
remarks:        * http://www.ripe.net/whois
remarks:        ****************************


organisation:   ORG-CMH1-RIPE
org-name:       Cyso Group B.V.
country:        NL
org-type:       LIR
address:        Dummy address for ORG-CMH1-RIPE
# Email removed, Log into bgp.tools to see whois emails/phone numbers
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
remarks:        ****************************
remarks:        * THIS OBJECT IS MODIFIED
remarks:        * Please note that all data that is generally regarded as personal
remarks:        * data has been removed from this object.
remarks:        * To view the original object, please query the RIPE Database at:
remarks:        * http://www.ripe.net/whois
remarks:        ****************************

Last Update: 2026-06-05T03:26:05Z UTC

---

Member of the following AS-SETs

-	Member
RIPE	as-jaguar-peering-v6-nl-ix
RIPE	as29075:as-peers:as-ams-ix
RIPE	as50295:as-peers-nlix
RIPE	as43190:as-amsix-peers
LEVEL3	as-lumen-customers-asns
RIPE	as20932:as-peering
RIPE	as29169:as-peers6
RIPE	as39647:as-peers-ams-ix
ALTDB	as-nlayer-customers
RIPE	as34968:as-nl-ix-peers
APNIC	as45430:as-awn-iig
RIPE	as-manda-amsix-peers-v6
RIPE	as29169:as-peers4
RIPE	as-cysonet
RIPE	as34968:as-ams-ix-v6-peers
RIPE	as49820:as-ams-ix-peers
RIPE	as-docler:as-peers
RIPE	as1200:as-ams-ix-peers
RIPE	as-cyso
RIPE	as-manda-amsix-peers-v4
RIPE	as8218:as-amsix-rs
RIPE	as-ddits:as-peers
RIPE	as34968:as-nl-ix-v6-peers
ALTDB	as-hwng-downstreams
RIPE	as51088:as-peers-amsix
RIPE	as-nforce-nl-ix-peers
RIPE	as25091:as-peers
RIPE	as43190:as-nlix-peers
RIPE	as-oxilion-peers
RIPE	as6777:as-ams-ix-rs-v6
RIPE	as30781:as-jaguar-peering-v6-ams-ix
RIPE	as34968:as-ams-ix-peers
RIPE	as28747:as-nl-ix-peers
LEVEL3	as-level3-origins-eu
RIPE	as47841:as-open-peering
RIPE	as39647:as-peers-nl-ix
RIPE	as6777:as-ams-ix-rs
RADB	as-mzima-customers
RIPE	as30781:as-jaguar-peering-ams-ix
RADB	as-sbn-iig
RIPE	as-green-peers
RIPE	as50295:as-peers-amsix
RIPE	as9150:as-peers-amsix
RADB	as174:as-cogc-026