Anonymous Proxy Checker
Anonymous Proxy Checker
Check whether an IP is an anonymous proxy concealing its user’s real address. See the proxy type and a confidence score in seconds.
What is an anonymous proxy?
An anonymous proxy hides the real IP address of the person behind it, so the destination server only sees the proxy. “Elite” or high-anonymity proxies go further and strip the headers that would reveal a proxy is in use at all. An anonymous proxy checker tests an IP for these behaviours and tells you whether the address is concealing its true origin, so you can decide how much to trust the request.
How the anonymous proxy check works
Anonymity levels differ, so we look for both obvious and hidden proxies.
Header inspection
Missing or forged forwarding headers that signal high-anonymity proxies.
Open proxy tests
Detection of reachable anonymous proxy endpoints.
Pool & reputation
Membership in proxy pools and prior anonymising behaviour.
Tor & relays
Correlation with Tor exit nodes and known relays.
ASN context
Hosting vs. residential ownership of the IP.
Confidence score
A 0–100 score reflecting how certain the proxy verdict is.
Where teams use it
Fraud screening
Treat anonymised orders and signups with extra caution.
Forum & marketplace trust
Reduce abuse from users hiding behind proxies.
Access control
Restrict sensitive actions from anonymising IPs.
Investigations
Confirm whether a suspicious IP is concealing its origin.
Explore related detection tools
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Frequently asked questions
Why Choose IPScanner
Teams use IPScanner to tell real users apart from masked and automated traffic.
Accuracy you can measure
Verdicts come with a 0 to 100 confidence score, so you tune the threshold to your own risk instead of trusting one number.
Built to scale
The API runs on infrastructure sized for production traffic, with a 99.99% uptime target for business-critical use.
Data that stays fresh
We refresh VPN, proxy, and Tor lists continuously, so newly spun-up servers get caught quickly.
Easy to wire in
A plain REST API works with any language or framework. Most teams are live the same afternoon.
Documentation that's honest
Worked examples in curl, JavaScript, and Python, plus straight notes on what each signal does and doesn't mean.
People who know the domain
Support comes from engineers who work on IP detection every day, not a generic help desk.
