VPN & Proxy Detection — SpainDetect VPN, Proxy & Bot Traffic from Spain
Maskbreak scores every visitor's network in real time — flagging VPN exit nodes, residential proxies, datacenter ASNs, and headless browsers originating from Spain. Free API. Under 40ms server-side. No CAPTCHAs.
The networks Spain traffic actually arrives from
Spain has 967 autonomous systems on the public registry. 77 of them are hosting, cloud or transit networks holding 29.2M 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 |
|---|---|---|
| AS3352 | TELEFONICA_DE_ESPANA | 10.5M addresses |
| AS12479 | UNI2-AS | 7M addresses |
| AS12430 | VODAFONE_ES | 3.7M addresses |
| AS6739 | ONO-AS Cableuropa - ONO | 1.8M addresses |
| AS766 | REDIRIS RedIRIS Autonomous System | 1.4M addresses |
| AS15704 | XTRA Telecom | 836K addresses |
| AS12338 | EUSKALTEL | 514K addresses |
| AS29119 | SERVIHOSTING-AS AireNetworks | 477K addresses |
Largest hosting-shaped networks registered in Spain, 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 Spain traffic needs special scrutiny
Datacenter ASN concentration
Residential proxy abuse is rising rapidly, particularly via Movistar and Vodafone consumer ranges resold by botnets.
Residential proxy resale
Consumer ISP ranges in Spain 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 Spain. 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 Spanish-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 Spain traffic
- Every major VPN provider's Spanish exit nodes (NordVPN, ExpressVPN, ProtonVPN, Mullvad, Surfshark, and 40+ more)
- Commercial or peer-to-peer residential proxy pools using consumer Spanish IPs
- Datacenter ASNs commonly used for automation (AWS, GCP, Azure, OVH, Hetzner, DigitalOcean, Vultr, Linode)
- Tor exit nodes and known anonymous relays advertising Spanish geolocations
- Headless browsers (Puppeteer, Playwright, Selenium) and antidetect tooling driving sessions from Spain
- Country-spoofing — when a session claims to be in Spain but the network telemetry says otherwise
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 === 'ES' && network.vpn) blockOrChallenge();
Stop Spanish VPN, proxy & bot fraud today
Free tier: 1,000 requests/hour. No card, no expiry. Detects VPN, residential proxy, datacenter, and bot traffic from Spain and 195 other countries.