Proxy & VPN detection · live

Live proxy & VPN detection.

Detects proxy, VPN and remote desktop traffic with 99% accuracy. The engine is testing the connection you are reading this on.

Detection engine v5 · Nov 5, 2026

Your connection

Analysing…

Proxy score –

VPN score –

Processing…

01 — Integration

Put this detection on your own site.

Add one script tag to your site. We POST a JSON verdict for every visitor to your server. Nothing to host.

01

Create a free account

Your API key is ready on the dashboard. It is public by design and only identifies your site.
02

Paste one line of HTML

Before </body>. Works with any HTML, CMS or tag manager.
03

Receive the verdict

Set a callback URL. Your server gets a JSON POST per visitor and decides: allow, CAPTCHA or block.

The snippet

<script src="https://engine.proxydetect.live/pd-lib.js?pdKey=YOUR_API_KEY&pdVal=SESSION_ID" async></script>

SESSION_ID is any id you choose. It comes back unchanged in the result.

What your server receives

{
  "type": "active",
  "uuid": "59d68ddfa135f3f0",
  "pdVal": "SESSION_ID",
  "ip": "185.220.101.34",
  "is_proxy": true,
  "is_vpn": false
}

02 — Method

IP blocklists are outdated the moment they are published. Our engine classifies live traffic instead.

New proxy clusters and residential pools come online every hour.

Attackers rotate to clean mobile and residential IPs that no blocklist has seen yet.

TCP/IP fingerprints, latency and network flows expose tunnelled traffic as it happens.

03 — Tests

Each of these runs against the connection you are on and shows its evidence.