Free VPN Checker – Check Any IP Address for VPN, Proxy, TOR
Our free VPN checker and VPN detector lets you instantly verify any IP address for VPN, proxy or TOR use.
Free VPN Detector | IP VPN Checker
Enter any IP address below to run a VPN detection test and see if this IP is a VPN.
Use this VPN checker to detect VPN usage on any IPv4 or IPv6 IP address. Our VPN detection test delivers accuracy for checking VPN IPs, proxies and TOR nodes in real time. VPN detection data is powered by Fraudlogix’s Bot & Fraud API.
Integrate Fraudlogix’s API for VPN Detection on Your Website
VPN connections and anonymizing services can create vulnerabilities for fraudulent activity and automated bot traffic. Our advanced VPN checker and VPN detector technology provides a comprehensive solution for identifying suspicious IP addresses, including VPN endpoints, proxy servers, and TOR network connections.
Our VPN checker can be seamlessly integrated into your existing infrastructure. Process IP addresses through our bulk VPN detector or implement our API to start identifying VPN traffic within minutes.
This VPN detector operates worldwide with full IPv4 and IPv6 support. Our VPN checker accurately identifies connections from major providers including NordVPN, ProtonVPN, ExpressVPN, Private Internet Access, and SurfShark.
Whether you need a reliable VPN detector for fraud prevention or a comprehensive VPN checker for traffic analysis, our Bot & Fraud API delivers the precision and speed your business requires.
Learn More About Our Products
What is VPN detection?
VPN detection is the process of identifying whether internet traffic originates from a Virtual Private Network (VPN). By running a VPN IP lookup or IP VPN checker, you can:
- Block fraudulent transactions and bot farms
- Enforce geo restrictions
- Detect account sharing or cloaked traffic
Whether you need to detect VPN usage for fraud prevention, geo‑targeting or compliance, our VPN detector gives you the insight you need.
For a deep dive into how VPNs actually work, see the VPN overview on Wikipedia.
How our VPN detection test works
Fraudlogix Bot & Fraud API runs a multi‑signal VPN detect process:
- IP reputation history – Tracks known VPN exit nodes and proxy services
- Network metadata – Analyzes routing paths to spot VPN tunnels
- Behavioral patterns – Flags rapid connection switches or shared endpoints
This layered approach lets our IP check VPN engine accurately detect VPN, proxy and TOR traffic.
Key benefits of our VPN checker IP tool
- High accuracy VPN detection – identify known VPN exit nodes
- Real time updates – VPN blocklist refreshed hourly for instant threat intelligence
- Multi‑signal analysis – combine VPN, proxy and TOR detection
- Easy integration – Use our IP VPN checker in one API call
With our VPN detection API, you can quickly detect VPN usage before it impacts your business.
Sample API Call: VPN Detection Test in Action
Use the following API Request example to perform a VPN detection lookup:
Use this IP VPN checker example to detect VPN, proxy and TOR in a single IP check VPN request.
Common VPN Detection Use Cases & Benefits
- Detect VPN on user login – Block suspicious sessions
- Check if IP is VPN – Enforce geo‑blocking on restricted content
- VPN detection test at checkout – Prevent payment fraud
- VPN IP lookup for analytics – Gain visibility into masked traffic
Whether you call it an IP VPN checker, VPN detector, or VPN detect API, the outcome is the same: you stop fraud and bot attacks.
Frequently Asked Questions About VPN Checker and VPN Detector
What is a VPN checker?
A VPN checker is a tool that tests an IP address to see if it’s routing through a virtual private network. Our VPN checker flags VPN, proxy and TOR nodes in real time.
How does your VPN detector work?
Fraudlogix’s VPN detector uses multi‑signal analysis—IP reputation, network metadata and behavioral patterns—to identify VPN exit nodes, proxy services and TOR traffic.
Is the VPN checker free to use?
Yes. Our free VPN checker lets you test any IP right in your browser. For automated bulk checks, integrate our API. Sign up and receive 1,000 free API lookups.
How accurate is the VPN detection?
We maintain an hourly‑updated blocklist of 30 million+- IPs. This yields a high true‑positive rate on known VPN nodes while minimizing false positives.
What data do I need to run a VPN IP check?
Just the target IP address. Pass it into our API endpoint and you’ll receive VPN, proxy, TOR and risk‑score signals in one response.
Can I detect proxy and TOR alongside VPN?
Absolutely. Our API returns flags for VPN, proxy and TOR in a single lookup, so you can block all forms of non‑human or masked traffic.
Try our free IP lookup tool
Get started right away with our free IP lookup tool. Use it to perform a quick VPN detection test, check VPN IPs, proxy status and more—all without writing a single line of code.
Ready to add real-time VPN detection?
Integrate Fraudlogix Bot & Fraud API today to protect against VPN‑based fraud, bots and invalid traffic. Contact our team to learn more.