Can UDP ports be tested?

No. This tool only performs TCP connection tests. Check server-side logs for UDP.

Port shows open but proxy doesn't work?

An open port doesn't mean the service is configured correctly. Test credentials and protocol with Proxy Checker.

Can I test local network addresses?

No. Private and local addresses (localhost, 192.168.x.x) are rejected for security reasons.

Which ports do WeProxy proxies use?

WeProxy datacenter and residential proxies use standard HTTP (8080) and SOCKS (1080) ports; get assigned port info from your dashboard.

Why can’t some ports be tested?

For security, sensitive service ports such as SSH, databases, and email are blocked, as are many different ports tried in a short time. Proxy ports assigned in the dashboard stay open to test.

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Tools

Test Port Reachability Instantly

Proxy server, web server or game server — find out in seconds whether a target host and port is open or closed.

Enter the domain or IP address and port number to check. The tool tests reachability by attempting a TCP connection.

TCP

Protocol

1–65535

Port range

<5 s

Query time

Why this tool?

Why Port Checker?

Port Checker is essential for proxy infrastructure setup and firewall configuration. WeProxy customers use it to verify assigned ports are reachable externally; closed ports usually indicate firewall or misconfiguration issues.

01Tests any public host and port
02Clearly shows open / closed status
03Ideal for proxy server setup
04No sign-up or installation required

How it works

Step-by-step process

Enter Host

Type the domain name or IP address in the host field.

Set Port

Enter the port number to test (e.g. 8080, 1080).

Run Check

Click Run check; a TCP connection attempt begins.

Interpret Result

Open means reachable; closed indicates firewall or service issues.

Tips

During proxy setup, verify the port is open with Port Checker first, then test authentication with Proxy Checker.
Check both inbound and outbound firewall rules; a port may be open externally but blocked by outbound rules.

FAQ

Frequently asked questions

Short, clear answers to the most common questions about this tool.

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Get Started

Get started with Port Checker

Try our free tools today. For production workloads with high uptime, low latency and reliable exit IPs, switch to WeProxy residential or datacenter proxies.

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