Use our free Open Port Checker Tool to test if a specific port on your server or IP address is open and accessible from the internet. Great for devs, sysadmins, and gamers.

 Is Your Port Open? Use This Free Online Port Checker Tool to Find Out Instantly

Need to check if a specific port is open and reachable from the internet?

Whether you're setting up a web server, running a game server, or trying to debug a network issue, our Open Port Checker Tool lets you instantly test whether a TCP port on any public IP or domain is open and accepting connections.

🔍 What is a Port Checker?

A Port Checker is a tool that tests if a specific port number on a remote machine (IP or domain) is open, closed, or filtered.

Ports are digital gateways that handle different types of traffic:

• Port 80 → HTTP
• Port 443 → HTTPS
• Port 21 → FTP
• Port 22 → SSH
• Port 3306 → MySQL

When a port is closed, services relying on that port won’t work externally.

⚙️ How the Tool Works

• You enter an IP address (or domain) and a port number
• We send a connection request to that combination
• You receive a real-time response:
  • ✅ Open (Accepting connections)
  • ❌ Closed or filtered (Blocked by firewall or unreachable)

👉 Test your port now

💡 Why Use an Open Port Checker?

✅ Debug Server Issues

Hosting a website, game server, or database and can't connect? Check if the necessary ports are open.

✅ Security Testing

Ensure only the ports you want exposed are actually open. Helps in identifying misconfigurations.

✅ Port Forwarding Validation

If you're forwarding ports on a router (e.g., for a home server), verify it works from outside your network.

✅ Remote Access Checks

Ensure ports like 22 (SSH) or 3389 (RDP) are reachable when needed — or closed when not.

🧪 Real-World Example

You set up a new Minecraft server on your home network but your friends can’t join.

• You enter your public IP and port 25565 into the tool
• Result: ❌ Port is closed
• You realize port forwarding isn’t configured correctly
• You fix it and recheck — ✅ now it's open

Boom. Solved.

🔗 Related Tools You Might Like:

• Ping Tool: Check if your server is live
• Website Status Checker: Ensure your domain is online
• IP Lookup: View your server’s geolocation and ISP

🚀 Try the Open Port Checker Now (Free Forever)

✅ Instant response
 ✅ Browser-based – no install