Free Proxy Checker – Check Any IP Address for Proxy, VPN, TOR
Our free proxy checker and proxy detector lets you instantly verify any IP address for proxy, VPN or TOR use.
Free Proxy Checker | IP Proxy Checker
Enter any IP address below to run a proxy detection test and see if this IP is a proxy.
Use this proxy checker to detect proxy usage on any IPv4 or IPv6 IP address. Our proxy detection test delivers accuracy for checking proxy IPs, VPNs and TOR nodes in real time. Proxy detection data is powered by Fraudlogix’s Bot & Fraud API.
Integrate Fraudlogix’s API for Proxy Detection on Your Website
Proxy connections and anonymizing services can create vulnerabilities for fraudulent activity and automated bot traffic. Our advanced proxy checker and proxy detector technology provides a comprehensive solution for identifying suspicious IP addresses, including proxy servers, VPN endpoints, and TOR network connections.
Our proxy checker can be seamlessly integrated into your existing infrastructure. Process IP addresses through our bulk proxy detector or implement our API to start identifying proxy traffic within minutes.
This proxy detector operates worldwide with full IPv4 and IPv6 support. Whether you need a reliable proxy detector for fraud prevention or a comprehensive proxy checker for traffic analysis, our Bot & Fraud API delivers the precision and speed your business requires.
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What is proxy detection?
Proxy detection is the process of identifying whether internet traffic originates from a proxy server. By running a proxy IP lookup or IP proxy checker, you can:
- Block fraudulent transactions and bot farms
- Enforce geo restrictions
- Detect account sharing or cloaked traffic
Whether you need to detect proxy usage for fraud prevention, geo-targeting or compliance, our proxy detector gives you the insight you need.
How our proxy detection test works
Fraudlogix Bot & Fraud API runs a multi-signal proxy detect process:
- IP reputation history – tracks known proxy endpoints and anonymizer services
- Network metadata – analyzes routing/ASN to spot proxy infrastructure
- Behavioral patterns – flags rapid connection switches or shared endpoints
This layered approach lets our IP check proxy engine accurately detect proxy, VPN and TOR traffic.
Key benefits of our proxy checker tool
- High accuracy proxy detection – identify known proxy endpoints
- Real-time updates – blocklist refreshed hourly for instant threat intelligence
- Multi-signal analysis – combine proxy, VPN and TOR detection
- Easy integration – use our IP proxy checker in one API call
Sample API Call: Proxy Detection Test in Action
Use the following API request example to perform a proxy detection lookup:
Common Proxy Detection Use Cases & Benefits
- Detect proxy on user login – block suspicious sessions
- Check if IP is proxy – enforce geo-blocking on restricted content
- Proxy detection test at checkout – prevent payment fraud
- Proxy IP lookup for analytics – gain visibility into masked traffic
Whether you call it an IP proxy checker, proxy detector, or proxy detect API, the outcome is the same: you stop fraud and bot attacks.
Frequently Asked Questions About Proxy Checker and Proxy Detector
How do websites detect proxies?
They combine IP reputation, ASN checks, proxy or VPN databases, geolocation consistency, device fingerprints, and behavioral analysis.
Can you tell if someone is using a VPN?
Yes. VPN ranges often map to hosting providers or are flagged by detection APIs. Multiple signals reduce false negatives on consumer VPNs.
What is the difference between a proxy and a VPN?
A proxy masks the IP address. A VPN masks the IP and encrypts traffic. Both hide origin. VPNs typically provide higher privacy.
Is TOR always malicious?
No. It is often treated as high risk in fraud prevention because it limits attribution.
Are proxy servers safe?
It depends. Corporate and secure proxies are generally safe, but free public proxies can log data, inject ads, or expose users to malware.
Can a proxy be tracked?
Yes. While a proxy hides your IP, network operators, ISPs, and detection tools can often identify proxy use through traffic analysis and metadata.
How does a proxy work?
A proxy acts as an intermediary between a user and the internet, forwarding requests and masking the original IP address.
What does proxy mean?
In networking, a proxy is a server that represents another device, relaying traffic and hiding the true origin.
When should a proxy be used?
Proxies are commonly used for privacy, corporate traffic routing, caching, or accessing geo-restricted content.
Where is a proxy server located?
Proxies can be hosted in datacenters, residential ISP networks, or mobile carrier networks, depending on type and provider.
Which proxy is best?
For business use, secure corporate proxies or VPNs are recommended.
Why are proxies used?
They are used for anonymity, content access, traffic routing, load balancing, and in malicious contexts for fraud or scraping.
Try our free IP lookup tool
Get started right away with our free IP lookup tool. Use it to perform a quick proxy detection test, check proxy IPs, VPN status and more—all without writing a single line of code.
Ready to add real-time proxy detection?
Integrate Fraudlogix Bot & Fraud API today to protect against proxy-based fraud, bots and invalid traffic. Contact our team to learn more.