VPN & Proxy Detection — NetherlandsDetect VPN, Proxy & Bot Traffic from Netherlands
Maskbreak scores every visitor's network in real time — flagging VPN exit nodes, residential proxies, datacenter ASNs, and headless browsers originating from the Netherlands. Free API. Under 40ms server-side. No CAPTCHAs.
The networks Netherlands traffic actually arrives from
Netherlands has 1,095 autonomous systems on the public registry. 126 of them are hosting, cloud or transit networks holding 41.8M addresses between them — the ranges a commercial VPN or datacenter proxy exits from. Residential broadband is the rest, and that is the traffic worth watching, because a residential proxy hides inside it.
| ASN | Network | IPv4 space |
|---|---|---|
| AS20940 | AKAMAI-ASN1 | 8.1M addresses |
| AS1136 | KPN KPN National | 7.3M addresses |
| AS1103 | SURFNET-NL SURFnet, The Netherlands | 7.2M addresses |
| AS33915 | TNF-AS | 6.6M addresses |
| AS1101 | IP-EEND-AS IP-EEND BV | 1.9M addresses |
| AS50266 | ODIDO | 1.8M addresses |
| AS15830 | EQUINIX | 1.5M addresses |
| AS6830 | LIBERTYGLOBAL Liberty Global formerly UPC Broadband Holding, aka AORTA | 1.2M addresses |
Largest hosting-shaped networks registered in Netherlands, by IPv4 allocation. Registry data, refreshed daily. A datacenter ASN is not evidence of fraud on its own — it is one signal, weighed alongside device and behaviour.
Why Netherlands traffic needs special scrutiny
Datacenter ASN concentration
The Netherlands is Europe's most VPN-saturated country per capita — most paid VPN providers run their primary EU exits here.
Residential proxy resale
Consumer ISP ranges in Netherlands can appear in commercial or peer-to-peer residential proxy pools. A consumer ISP label is not proof of fraud; combine it with device, session, and routing signals.
VPN exit-node clustering
The same handful of hosting providers dominate VPN exit nodes in Netherlands. Maskbreak maintains live mappings of these ranges so a new IP from a known VPN ASN is flagged within seconds of going live.
Antidetect browser usage
Multi-accounting fraud against Dutch-targeted SaaS, fintech, and e-commerce increasingly uses Kameleo, GoLogin, or AdsPower to spoof device fingerprints. Maskbreak scores these at the device layer, not the IP layer.
What Maskbreak detects for Netherlands traffic
- Every major VPN provider's Dutch exit nodes (NordVPN, ExpressVPN, ProtonVPN, Mullvad, Surfshark, and 40+ more)
- Commercial or peer-to-peer residential proxy pools using consumer Dutch IPs
- Datacenter ASNs commonly used for automation (AWS, GCP, Azure, OVH, Hetzner, DigitalOcean, Vultr, Linode)
- Tor exit nodes and known anonymous relays advertising Dutch geolocations
- Headless browsers (Puppeteer, Playwright, Selenium) and antidetect tooling driving sessions from Netherlands
- Country-spoofing — when a session claims to be in Netherlands but the network telemetry says otherwise
VPN use & data rules in the Netherlands
The Netherlands enforces the GDPR through the Autoriteit Persoonsgegevens, with fraud prevention recognized as a legitimate interest. The Dutch specifics are infrastructural: Amsterdam is one of Europe's largest internet exchange and hosting hubs, so an outsized share of "Dutch" traffic is actually datacenter egress — VPS boxes, VPN exit nodes, and crawler fleets renting space in AMS-region facilities. A datacenter ASN flag on Netherlands-geolocated traffic is therefore one of the highest-confidence block signals you can act on, while genuine Dutch consumer traffic (KPN, Ziggo, Odido ranges) deserves the opposite default.
One API call. Bearer token. Done.
// Server-side only: an sk_live_ key must never reach the browser.
const r = await fetch('https://maskbreak.com/v1/evaluate', {
method: 'POST',
headers: {
'Authorization': 'Bearer sk_live_...',
'Content-Type': 'application/json'
},
body: JSON.stringify({ token: req.body.monocle })
});
const { decision, country, network } = await r.json();
if (country === 'NL' && network.vpn) blockOrChallenge();
Stop Dutch VPN, proxy & bot fraud today
Free tier: 1,000 requests/hour. No card, no expiry. Detects VPN, residential proxy, datacenter, and bot traffic from Netherlands and 195 other countries.