Free IP tool
Identify proxies and Tor exit nodes behind any IP address in real time. One endpoint covers HTTP, SOCKS, residential and datacenter proxies.
Overview
A proxy detection API tells you whether an IP address is acting as an intermediary: an HTTP or SOCKS proxy, a residential proxy network, a datacenter proxy or a Tor exit node. IPScanner classifies the proxy type and returns a confidence score so you can decide whether to block, challenge or allow the request. It removes the need to maintain proxy blocklists yourself.
Signals
Different proxy types leak different signals, we look for all of them.
Detection of exposed HTTP/HTTPS and SOCKS4/5 proxy endpoints.
Identifies IPs sold through residential proxy pools despite looking like home connections.
Hosting and cloud ASNs commonly used for proxying at scale.
Live correlation against the public Tor exit list.
Forwarding headers and timing patterns typical of relayed traffic.
Each result names the proxy type and a 0–100 confidence value.
API
curl -H 'Authorization: Bearer YOUR_API_KEY' \ 'https://ipscanner.io/v1/proxy/185.220.101.1'
One request, one verdict. A free key gets 7 days of Starter, then 1,000 lookups a month with no card, and every response carries the network class and a confidence score.
Use cases
Block scrapers that rotate through proxy pools.
Filter invalid traffic coming from proxy infrastructure.
Catch multi-accounting hidden behind residential proxies.
Verify the true origin of a request for KYC and licensing.
FAQ
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.
New accounts get 7 days of Starter from their first request. No card, and your key is on screen as soon as you sign up.