AS57758 CBWS Holding B.V.

Netherlands CBWS-AS RIPE 5 IPv4 prefixes 11 IPv6 prefixes

IPv4 addresses

1,280

IPv6 /48 networks

22,547

RPKI

16 valid0 no ROA

Peers and downstreams

Holder

AS name: CBWS-AS
Description: CBWS Holding B.V.
Organisation: CBWS Holding B.V.
Registered in: Geldrop, Netherlands
Abuse contact: abuse@cbws.nl
Assigned: 2016-09-13
Registered: 2016-09-14
Record last changed: 2026-07-31 07:50 UTC

185.142.141.0/24 185.167.204.0/24 185.167.205.0/24 185.167.206.0/24 185.167.207.0/24

AS1031	PEER 1031 LLC PEER1-1031
AS1103	SURF B.V. SURFNET-NL
AS1140	Stichting Internet Domeinregistratie Nederland SIDN
AS3212	Telemach Slovenija d.o.o. TELEMACH
AS3399	Obenet AB OBE-NET
AS5405	Inter.link GmbH INTERDOTLINK
AS6204	TMRC GROUP SRL ZET-NET
AS6424	EDGOO NETWORKS UNIPESSOAL LDA EDGOO
AS6696	VERIXI SA VERIXI
AS7713	PT Telekomunikasi Indonesia telkomnet-as-ap
AS8218	Zayo Infrastructure France SA NEO-ASN
AS8298	IPng Networks GmbH IPNG
AS12859	BIT BV NL-BIT
AS14840	BR.Digital Telecom AS14840
AS14907	Wikimedia Foundation Inc. WIKIMEDIA
AS17639	Converge ICT Solutions Inc. CONVERGE-AS
AS20326	TeraSwitch Networks Inc. TERASWITCH
AS20485	Joint Stock Company TransTeleCom TRANSTELECOM
AS20766	Association "Gitoyen" GITOYEN-MAIN-AS
AS20932	Services Industriels de Geneve SIG-ST
AS24482	SG.GS SGGS-AS-AP
AS25091	IP-Max SA IP-Max
AS28917	Fiord Networks, UAB Fiord-AS
AS29075	IELO-LIAZO SERVICES SAS IELO
AS29632	Netassist International EOOD NASSIST-AS
AS31500	Global Network Management Inc GNM-AS
AS34019	Hivane Association HIVANE
AS34927	iFog GmbH iFog-GmbH
AS37100	SEACOM Limited
AS37468	Angola Cables
AS37721	Virtual Technologies & Solutions
AS39122	Blacknight Internet Solutions Limited BLACKNIGHT-AS
AS39351	31173 Services AB ESAB-AS
AS41666	Institute for Pyrotechnical Cleaning (limited company) PYRO-AS
AS42541	Fiberby ApS FIBERBY
AS48185	team.blue NV team_blue
AS49434	FBW NETWORKS SAS FBWNETWORKS
AS49544	i3D.net B.V i3Dnet
AS50629	LWLcom GmbH LWLCOM
AS50673	Serverius Holding B.V. Serverius-as
AS51185	MainStreaming SpA MAINSTREAMING-AS
AS56987	ABACLOUDA SAS AS-ABACLOUDA
AS60144	3W Infra B.V. THREE-W-INFRA-AS
AS62167	Tismi BV Tismi
AS64475	Freifunk Frankfurt am Main e.V. FREIFUNK-FRANKFURT
AS198150	SIACOM JSC SIACOM-AS
AS199524	G-Core Labs S.A. GCORE
AS202580	A-Systems Sp. z o.o. AS-1-NL
AS205103	Telegraph42 Management GmbH TELEGRAPH-AS
AS205112	PHILUNET GmbH PHILUNET
AS209022	Tschajera Limited Tschajera-Limited
AS209823	Enki Multimedia EURL ENKI-AS
AS212483	LEVEL EIGHTY-SIX COMMUNICATIONS LTD level86
AS212635	Jurrian van Iersel AS212635
AS263152	MIGO TELECOM AS263152
AS271253	LINK BRASIL TELECOMUNICACOES LTDA AS271253

Upstream graph

Upstreams and their upstreams, from BGP paths

Network health

Grade A · 90/100

pass	Prefixes covered by valid ROAs 16 of 16 announced prefixes are RPKI valid.	25/25
pass	No RPKI invalid announcements None of the announcements is RPKI invalid.	10/10
pass	Announces IPv6 11 IPv6 prefixes.	15/15
pass	More than one upstream 4 upstreams seen in BGP.	10/10
pass	Working abuse contact abuse@cbws.nl is published.	15/15
fail	Publishes a geofeed No geofeed found. Without one, location databases have to guess.	0/10
pass	No prefixes smaller than /24 or /48 All prefixes are /24 (IPv4) or /48 (IPv6) or larger.	10/10
pass	Registry record maintained Last changed 2026-07-31.	5/5

Built from the announced prefixes, RPKI, the registry record and geofeeds. Checks without data are not counted. Also in the API.

Show this on your website

HTML

<a href="https://ip-fd.net/asn/57758"><img src="https://ip-fd.net/badge/asn/57758/health.svg" alt="AS57758 network health on IP-FD.net"></a>

Markdown

[![AS57758 network health](https://ip-fd.net/badge/asn/57758/health.svg)](https://ip-fd.net/asn/57758)

Use rpki.svg instead of health.svg for the RPKI badge.

Routing changes

Last 30 days

2026-10-04 10:57 UTC	Neighbour gone	AS202365	peer
2026-10-04 10:57 UTC	Neighbour gone	AS137409	upstream
2026-10-04 10:57 UTC	Neighbour gone	AS58299	peer
2026-10-04 10:57 UTC	Neighbour gone	AS58057	upstream
2026-10-04 10:57 UTC	Neighbour gone	AS50869	upstream
2026-10-04 10:57 UTC	Neighbour gone	AS50263	upstream
2026-10-04 10:57 UTC	Neighbour gone	AS42295	upstream
2026-10-04 10:57 UTC	Neighbour gone	AS41051	upstream
2026-10-04 10:57 UTC	Neighbour gone	AS30886	upstream
2026-10-04 10:57 UTC	Neighbour gone	AS20764	upstream
2026-10-04 10:57 UTC	Neighbour gone	AS9044	upstream
2026-10-04 10:57 UTC	New neighbour	AS271253	peer
2026-10-04 10:57 UTC	New neighbour	AS17639	peer
2026-10-04 10:57 UTC	Relationship changed	AS8298	upstream to peer
2026-10-04 10:57 UTC	Relationship changed	AS7713	upstream to peer
2026-10-04 10:57 UTC	Relationship changed	AS6696	upstream to peer
2026-10-04 10:57 UTC	Relationship changed	AS6204	upstream to peer
2026-10-04 10:57 UTC	Relationship changed	AS60144	upstream to peer
2026-10-04 10:57 UTC	Relationship changed	AS5405	upstream to peer
2026-10-04 10:57 UTC	Relationship changed	AS50673	upstream to peer
2026-10-04 10:57 UTC	Relationship changed	AS39351	upstream to peer
2026-10-04 10:57 UTC	Relationship changed	AS37468	upstream to peer
2026-10-04 10:57 UTC	Relationship changed	AS37100	upstream to peer
2026-10-04 10:57 UTC	Relationship changed	AS34019	upstream to peer
2026-10-04 10:57 UTC	New neighbour	AS31500	peer
2026-10-04 10:57 UTC	New neighbour	AS29632	peer
2026-10-04 10:57 UTC	Relationship changed	AS25091	upstream to peer
2026-10-04 10:57 UTC	Relationship changed	AS209022	upstream to peer
2026-10-04 10:57 UTC	Relationship changed	AS20766	upstream to peer
2026-10-04 10:57 UTC	New neighbour	AS205103	peer
2026-10-04 10:57 UTC	Relationship changed	AS20485	upstream to peer
2026-10-04 10:57 UTC	Relationship changed	AS20326	upstream to peer
2026-10-04 10:57 UTC	New neighbour	AS202580	peer
2026-10-04 10:57 UTC	Relationship changed	AS14840	upstream to peer
2026-10-04 10:57 UTC	Relationship changed	AS1103	upstream to peer
2026-10-04 10:57 UTC	Relationship changed	AS1031	upstream to peer

WHOIS

aut-num:        AS57758
as-name:        CBWS-AS
org:            ORG-CHB6-RIPE
remarks:        --- Transits ---
remarks:        
remarks:        = Cogent
remarks:        = Joint Transit
remarks:        = Open Peering
remarks:        = True
remarks:        
remarks:        --- Internet Exchanges ---
remarks:        
remarks:        = Frys-IX
remarks:        = NL-IX
remarks:        = SPEED-IX
remarks:        = LSIX - LayerSwitch Connect
remarks:        
remarks:        --- Customers ---
remarks:        
remarks:        = Marlin Cremers
remarks:        = Zerospace Cloud
remarks:        = YottaSrc
remarks:        
admin-c:        CN7276-RIPE
tech-c:         CN7276-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         MNT-CBWS
created:        2016-09-14T11:47:11Z
last-modified:  2026-07-31T07:50:41Z
source:         RIPE
% 22 routing policy lines (import/export) not shown

Routing data

Updated just now

Registry record

Fetched just now from RIPE

Prefixes and neighbours come from the RIPE RIS route collectors. Data older than 5 minutes is refreshed when this page is opened.

API

curl -H "X-API-Key: YOUR_KEY" https://ip-fd.net/api/v1/asn/57758

const res = await fetch('https://ip-fd.net/api/v1/asn/57758', {
  headers: { 'X-API-Key': 'YOUR_KEY' }
});
const data = await res.json();
console.log(data);

import requests

r = requests.get('https://ip-fd.net/api/v1/asn/57758', headers={'X-API-Key': 'YOUR_KEY'}, timeout=10)
r.raise_for_status()
print(r.json())

<?php
$ch = curl_init('https://ip-fd.net/api/v1/asn/57758');
curl_setopt($ch, CURLOPT_HTTPHEADER, ['X-API-Key: YOUR_KEY']);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$data = json_decode(curl_exec($ch), true);
print_r($data);

req, _ := http.NewRequest("GET", "https://ip-fd.net/api/v1/asn/57758", nil)
req.Header.Set("X-API-Key", "YOUR_KEY")
res, err := http.DefaultClient.Do(req)
if err != nil {
    log.Fatal(err)
}
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))

Works without a key at a lower rate. Get a free key.

AS174
AS6939	Hurricane Electric LLC HURRICANE
AS20562	Broadband Hosting B.V. OPEN-PEERING-AS
AS24785	Broadband Hosting B.V. JOINTTRANSIT-AS

AS201801	Christian Wittenberg trading as Zerospace Cloud ZEROSPACE
AS211593	HNielsen Technologies ApS hnielsen-networks
AS213535	YottaSrc YOTTASRC