VPN & Proxy Detection
See through anonymizers.
The most comprehensive VPN and proxy detection available. 8-layer detection combining ASN matching (152 VPN ASNs), 13 provider APIs, 36 DNS lists, active port probing, rDNS patterns, WHOIS keywords, and RIPE Atlas triangulation.
8-Layer Detection
ASN matching across 152 VPN ASNs, 13 provider APIs, 36 DNS lists, active port probing, rDNS patterns, WHOIS keywords, and RIPE Atlas geo-triangulation.
13+ Protocol Detection
Identify OpenVPN, WireGuard, SOCKS5/4, IPSec/IKEv2, L2TP, PPTP, Shadowsocks, V2Ray, SSH tunnels, HTTP proxy, and Tor bridges.
109-Port Active Scanning
Probe 109 ports across all supported protocols in parallel. ~5 seconds per IP with 50 concurrent scans.
Behavioral Proxy Detection
Detect residential proxies via user-agent diversity (20+ unique UAs), request volume bursts, and cross-customer access patterns.
Confidence Scoring
Every detection includes a 0-100 VPN confidence score and per-field confidence ratings (0.0-1.0) for granular risk decisions.
Provider Identification
Identify the specific VPN provider by name and tier for granular, policy-based access control decisions.
Sample Response
{
"is_vpn": true,
"vpn_provider": "detected-provider",
"vpn_confidence": 92,
"is_proxy": false,
"is_residential_proxy": false,
"has_wireguard": true,
"open_ports": [51820]
}Ready to get started?
5,000 free requests per month. No credit card required.