VPN & Proxy Detection — FranceDetect VPN, Proxy & Bot Traffic from France
Sentinel scores every visitor's network in real time — flagging VPN exit nodes, residential proxies, datacenter ASNs, and headless browsers originating from France. Free API. Under 40ms. No CAPTCHAs.
Why France traffic needs special scrutiny
Datacenter ASN concentration
France is OVH-hosted residential proxy services account for a disproportionate share of fraudulent traffic into French SaaS platforms.
Residential proxy resale
Consumer ISP ranges in France are routinely sold through residential proxy networks like ShadowNode and Bright Data. These IPs look real but rotate every few minutes — a clear bot signature once you know what to look for.
VPN exit-node clustering
The same handful of hosting providers dominate VPN exit nodes in France. 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 French-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 France traffic
- Every major VPN provider's French exit nodes (NordVPN, ExpressVPN, ProtonVPN, Mullvad, Surfshark, and 40+ more)
- Residential proxy networks reselling consumer French IPs (ShadowNode, Bright Data, Smartproxy, Oxylabs)
- Datacenter ASNs commonly used for automation (AWS, GCP, Azure, OVH, Hetzner, DigitalOcean, Vultr, Linode)
- Tor exit nodes and known anonymous relays advertising French geolocations
- Headless browsers (Puppeteer, Playwright, Selenium) and antidetect tooling driving sessions from France
- Country-spoofing — when a session claims to be in France 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 === 'FR' && network.vpn) blockOrChallenge();
Stop French VPN, proxy & bot fraud today
Free tier. 1,000 API requests per hour. No credit card. Detects VPN, residential proxy, datacenter, and bot traffic from France and 195 other countries.