Proxy detection
Run a proxy check on any IP and see the proxy type, whether it is an anonymous proxy, and how confident the verdict is.
HTTP, HTTPS, SOCKS, residential, and datacenter proxies, each reported with its own label.
Proxy lookups run in milliseconds, so you can screen traffic as it arrives.
Residential pools and anonymizers that pass a simple ASN check still get flagged on reputation.
Understanding proxy detection
A proxy hides a user by routing their traffic through another server, so a website sees the proxy's IP instead of the real one. Proxy detection works out whether an IP belongs to one of these relays (a VPN, public proxy, SOCKS proxy, Tor exit node, data-center IP, or residential proxy) rather than an ordinary home or business connection.
Proxy types
Commercial providers that route traffic through their own servers to hide the user's real IP.
Open servers that relay general traffic. Usually unreliable, sometimes outright insecure.
Protocol-level proxies that forward requests at the application or transport layer.
The last relay before Tor traffic reaches the open internet, closely tied to users seeking anonymity.
Addresses owned by hosting and cloud providers rather than ISPs, and a favorite of bots.
Route through real home addresses, so they're harder to spot but still show up through behavior.
Detection signals
No single method catches every proxy type, so the engine combines several.
Scores an address against past abuse, fraud reports, and public blacklists.
Traps and forensic analysis surface IPs that are actively relaying anonymized traffic.
Picks out hosting ranges and autonomous systems linked to proxy networks.
Classifies connection patterns to flag even the hard-to-spot residential proxies.
Business applications
Buyers using stolen cards hide their location behind a proxy. Detection flags them.
Unexpected proxy use can mean an account takeover or a compromised login.
Hold the line on regional rights by catching masked locations.
Most automated attacks and scrapers come through proxies and data-center IPs.
Frequently asked questions
IPScanner
Teams use IPScanner to tell real users apart from masked and automated traffic.
Verdicts come with a 0 to 100 confidence score, so you tune the threshold to your own risk instead of trusting one number.
The API runs on infrastructure sized for production traffic, with a 99.9% uptime target for business-critical use.
We refresh VPN, proxy, and Tor lists continuously, so newly spun-up servers get caught quickly.
A plain REST API works with any language or framework. Most teams are live the same afternoon.
Worked examples in curl, JavaScript, and Python, plus straight notes on what each signal does and doesn't mean.
Support comes from engineers who work on IP detection every day, not a generic help desk.
Your key is on screen as soon as you sign up, with no card. Claim 25,000 free credits when you want to block or run lookups.