Proxy Checker
Detect if an IP address or domain is behind a proxy, VPN, or Tor exit node. Check geolocation, open ports, and WHOIS info.
Supports IP addresses, domains, and IP:port format for proxy testing
Checking host information...
What is a Proxy Checker?
A proxy checker tests whether an IP address operates as a proxy server, VPN endpoint, or Tor exit node. It analyzes network characteristics, open ports, and hosting data to determine if traffic from that IP is likely anonymized or relayed.
How to Use
- Enter an IP address or domain in the search box (e.g.,
1.2.3.4orexample.com:8080) - Click "Check" or press Enter to start the analysis
- Review results including geolocation, proxy detection, and open port information
Features
Proxy Detection
Identifies if an IP is a known proxy, VPN, or Tor exit node using data center detection and port analysis.
IP Geolocation
Shows the physical location, ISP, and ASN information for any IP address worldwide.
Port Scanning
Checks common proxy ports (80, 443, 1080, 3128, 8080, 8118, 8888) for open services.
WHOIS Lookup
Retrieves domain registration details including registrar, creation date, and organization.
Why Use a Proxy Checker?
- Security: Identify traffic relay points and potential anonymization in your network
- Compliance: Ensure users aren't bypassing geo-restrictions via proxies
- Forensics: Investigate suspicious IP addresses for proxy/VPN behavior
- Privacy: Understand what information your own IP address reveals
Frequently Asked Questions
How does Proxy Checker work?
Free online proxy checker. Detect if an IP address is a proxy, VPN, or Tor exit node. Check IP geolocation, WHOIS, and open proxy ports. Everything runs locally in your browser for instant results and maximum privacy.
Is my data private when I use Proxy Checker?
Yes. Proxy Checker runs entirely in your browser using client-side JavaScript. Your input is never uploaded to any server, never logged, and never shared. Closing the tab clears everything from memory.
Do I need to sign up or create an account to use Proxy Checker?
No. Proxy Checker is 100% free with no signup, no email registration, no payment, and no ads. Open the page and start using it immediately.
Does Proxy Checker work without an internet connection?
Proxy Checker must reach public authoritative servers (DNS resolvers, WHOIS, certificate transparency logs, or exchange APIs) to fetch live data, so it requires an internet connection for live queries. Browser-based processing itself runs locally.
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