Review suspicious signups
Add proxy and VPN context to account creation. Combine it with your own abuse signals before challenging or approving a new account.
Build your traffic policy →PROXY & VPN DETECTION FOR DEVELOPERS
Proxy & VPN
detection.
Made simple.
A proxy and VPN detection API for better decisions at signup, login and beyond. Check IP addresses for proxy, VPN, Tor and hosting signals in one request.
1,000 free queries every day · No credit card required
IPv4 + IPv6JSON or Y/NAny backend language
FREE IP LOOKUPNo signup needed
Is this IP a proxy?
Look for proxy, VPN, Tor and hosting signals.
Building an app?Get 1,000 free API queries/day →
IP intelligence.
Ready for your app.
ONE API. THE CONTEXT YOU NEED.
Turn an IP address
into a better decision.
Bring network signals into the moments that matter. Your application stays in control of what happens next.
Understand incoming traffic
Distinguish available VPN, Tor, hosting and public proxy signals. Give operations and support teams more context for an IP lookup.
Try the IP checker →Integrate in your own stack
Use one HTTPS endpoint from Python, Node.js, PHP or another backend. Choose readable JSON or a compact yes/no result.
Get the code examples →BUILT AROUND YOUR WORKFLOW
Detection is the start.
Make the decision yours.
One workspace for API usage, network context and the rules that fit your application. Available on free and paid accounts.
Your control center
Track daily usage, export reports, manage your API key and subscription, and get support from your account dashboard.
Explore the dashboard →Allow, block & custom lists
Organize IPv4 and IPv6 addresses, CIDR ranges and AS numbers. Keep trusted exceptions and unwanted networks in your own lists.
See how lists work →Rules for your application
Combine network flags, country, ASN and risk conditions. Choose allow, block or review, set priorities and test with a real IP.
Build a custom policy →Location & ASN context
Get available country, region, city, approximate coordinates and network organization alongside your detection result.
Explore the response →Explainable risk signals
A network exposure score with the reasons behind it. Use it alongside your own account and request signals.
Read the scoring rules →Tools for your stack
Start with WordPress, Cloudflare Workers, Node.js or a bulk CSV checker. Keep the same account key and query allowance.
Get an integration →FROM FIRST LOOKUP TO YOUR OWN RULES
A small request.
A useful answer.
Send a public IP address and read the result in your app. Start with the overall classification, then use the available network flags for more specific decisions.
- Create your free account. Get an API key from your dashboard.
- Send an IP address. Authenticate securely from your backend.
- Use the result. Allow, verify or review traffic according to your policy.
{
"status": "success",
"ip": "185.220.101.44",
"proxy": 1,
"flags": {
"vpn": false,
"hosting": true,
"tor": true,
"public_proxy": false,
"known_bot": false
}
}Response excerpt; full JSON also includes location, ASN and risk. A positive network signal is not proof of abuse.
START FREE. SCALE WITH YOUR TRAFFIC.
Simple plans. All the essentials.
1,000 free API queries per day. Need more? Choose a monthly plan with a larger daily allowance.
Personal
$7.99/ month
10,000 queries per day
- All detection categories
- IPv4 and IPv6 lookups
- JSON and plain responses
- Account usage dashboard
Pro
$14.99/ month
50,000 queries per day
- All detection categories
- IPv4 and IPv6 lookups
- JSON and plain responses
- Account usage dashboard
Business
$24.99/ month
100,000 queries per day
- All detection categories
- IPv4 and IPv6 lookups
- JSON and plain responses
- Account usage dashboard
Enterprise
$39.99/ month
200,000 queries per day
- All detection categories
- IPv4 and IPv6 lookups
- JSON and plain responses
- Account usage dashboard
CONNECT YOUR STACK
Less setup.
More building.
Start with a ready-to-configure integration, then choose the network policy that fits your application.
QUESTIONS, ANSWERED
Before your
first request.
What is a proxy detection API?
A proxy detection API checks an IP address for signs of proxy, VPN, Tor or hosting use. ProxyRadar returns a yes/no result and available network category flags so an application can decide whether to allow a request, add verification or apply a traffic rule.
Can I try ProxyRadar for free?
Yes. The browser checker offers a limited number of checks without an account. A free account includes an API key and 1,000 successful IP queries per day, with no credit card required.
Does ProxyRadar support IPv6?
Yes. The checker and API accept public IPv4 and IPv6 addresses. Private and reserved IP addresses are not supported.
What information does the API return?
The JSON response includes the checked IP, an overall proxy result and available flags for VPN, hosting, Tor, public proxy and known crawler networks. A compact Y/N response is also supported.
Does a positive result mean a visitor is malicious?
No. VPNs, Tor and hosting networks also have legitimate uses. A network classification is a signal for your application, not proof of abuse or a verdict about a person.
Which programming languages can I use?
Any backend that can make an HTTPS request can use ProxyRadar. The integration guide includes Python, Node.js and PHP examples. Keep the API key on your server.
BUILD YOUR FIRST INTEGRATION
Your API key is the next step.
Start with 1,000 free queries every day.