Proxy Checker & Tester
Test HTTP, HTTPS, and SOCKS5 proxies for connectivity, DNS leaks, UDP support, and latency
Test Your Proxy
Test Preset:
Supported Formats:
HTTP/HTTPS:
- โข host:port
- โข host:port:user:pass
- โข http://user:pass@host:port
SOCKS5:
- โข socks5://host:port
- โข socks5://host:port:user:pass
- โข socks5://user:pass@host:port
What is a Proxy Checker?
A proxy checker tests your proxy server's functionality, speed, anonymity level, and security. It helps verify that your proxy is working correctly and not leaking your real IP address.
Our tool tests HTTP, HTTPS, and SOCKS5 proxies for:
- Basic connectivity and IP detection
- DNS leak detection (TCP & UDP)
- UDP support for SOCKS5 proxies
- Latency and round-trip time
- OS fingerprinting detection
Why Test UDP Support?
UDP (User Datagram Protocol) testing is crucial for SOCKS5 proxies because many applications require UDP support:
- Video streaming & VoIP applications
- Online gaming with low latency
- DNS queries and DNS leak prevention
- Torrent downloads (DHT protocol)
- Real-time communication apps
Note: Only SOCKS5 proxies support UDP. HTTP/HTTPS proxies are TCP-only.
Frequently Asked Questions
What's the difference between HTTP and SOCKS5 proxies?
HTTP proxies only handle web traffic (HTTP/HTTPS), while SOCKS5 proxies work with any protocol including UDP, making them more versatile for gaming, streaming, and P2P applications.
Why do UDP tests fail on my SOCKS5 proxy?
Some SOCKS5 proxy providers disable UDP support or have firewall restrictions. Coronium's mobile proxies fully support UDP with no restrictions.
What is a DNS leak?
A DNS leak occurs when your DNS requests bypass the proxy and go directly to your ISP, potentially revealing your browsing activity. Our test checks both TCP and UDP DNS queries. Run a full DNS leak test.
How accurate is this proxy tester?
Our tool uses the ProxySmart API, a professional-grade proxy testing service used by enterprises. Tests run in parallel for fast, accurate results.
Related Testing Tools
Advanced Proxy Tester
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Check your current IP address, location, ISP, and connection details
Need help choosing a proxy? Compare Coronium mobile proxies