VPN & Proxy Detection — FinlandDetect VPN, Proxy & Bot Traffic from Finland
Sentinel scores every visitor's network in real time — flagging VPN exit nodes, residential proxies, datacenter ASNs, and headless browsers originating from Finland. Free API. Under 40ms. No CAPTCHAs.
Why Finland traffic needs special scrutiny
Datacenter ASN concentration
Finland is Hetzner Helsinki and UpCloud datacenter ranges drive nearly all Finnish VPN exit traffic.
Residential proxy resale
Consumer ISP ranges in Finland 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 Finland. Sentinel 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 Finnish-targeted SaaS, fintech, and e-commerce increasingly uses Kameleo, GoLogin, or AdsPower to spoof device fingerprints. Sentinel scores these at the device layer, not the IP layer.
What Sentinel detects for Finland traffic
- Every major VPN provider's Finnish exit nodes (NordVPN, ExpressVPN, ProtonVPN, Mullvad, Surfshark, and 40+ more)
- Commercial or peer-to-peer residential proxy pools using consumer Finnish IPs
- Datacenter ASNs commonly used for automation (AWS, GCP, Azure, OVH, Hetzner, DigitalOcean, Vultr, Linode)
- Tor exit nodes and known anonymous relays advertising Finnish geolocations
- Headless browsers (Puppeteer, Playwright, Selenium) and antidetect tooling driving sessions from Finland
- Country-spoofing — when a session claims to be in Finland but the network telemetry says otherwise
One API call. Bearer token. Done.
const r = await fetch('https://sntlhq.com/v1/evaluate', {
method: 'POST',
headers: { 'Authorization': 'Bearer sk_live_...' },
body: JSON.stringify({ token: sentinelToken })
});
const { decision, country, network } = await r.json();
if (country === 'FI' && network.vpn) blockOrChallenge();
Stop Finnish VPN, proxy & bot fraud today
Free tier: 1,000 requests/hour. No card, no expiry. Detects VPN, residential proxy, datacenter, and bot traffic from Finland and 195 other countries.