Open Port Checker

Quickly verify network port accessibility for seamless connectivity and security.

Port Check Result

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What is a Port Checker?

A Port Checker is an effective online tool designed to check open ports on your device, computer or server. This tool is essential for troubleshooting connection issues with applications such as email clients or instant messaging programs that may be hindered by port blocking from your ISP or your router’s firewall.

It’s particularly helpful in ensuring proper port forwarding settings are in place for online gaming servers like Minecraft, where correct configuration allows external players to connect.

Additionally, this tool serves a crucial role in network security by helping you verify which ports are open or closed, enhancing your system’s safety.

Learn SMTP Ports

Known Ports

  • 20- FTP (File Transfer Protocol)
  • 21 – FTP (File Transfer Protocol)
  • 22 – SSH (Secure Shell)
  • 23 – Telnet, a Remote Login Service
  • 25 – SMTP (Simple Mail Transfer Protocol)
  • 53 – DNS (Domain Name System)
  • 80 – HTTP (Hypertext Transfer Protocol)
  • 110 – POP3 (Post Office Protocol 3)
  • 115 – SFTP (Secure File Transfer Protocol)
  • 123 – NTP (Network Time Protocol)
  • 143 – IMAP (Internet Message Access Protocol)
  • 161 – SNMP (Simple Network Management Protocol
  • 194 – IRC (Internet Relay Chat)
  • 443 – SSL / HTTPS (Hypertext Transfer Protocol Secure)
  • 445 – SMB

Known Ports

  • 465 – SMTPS (Simple Mail Transfer Protocol over SSL)
  • 554 – RTSP (Real Time Stream Control Protocol)
  • 873 – RSYNC (RSYNC File Transfer Services)
  • 993 – IMAPS (Internet Message Access Protocol over SSL)
  • 995 – POP3S (Post Office Protocol 3 over SSL)
  • 3389 – RDP (Remote Desktop Protocol)
  • 5631 – PC Anywhere
  • 3306 – MySQL
  • 5432 – PostgreSQL
  • 5672 – RabbitMQ
  • 5900 – VNC
  • 6379 – Redis
  • 8123 – ClickHouse
  • 8333 – Bitcoin
  • 11211 – Memcached
  • 25565- Minecraft

Frequently Asked Questions

A Port Checker is an online tool that allows you to check if specific ports on your network are open or closed. It works by attempting to connect to the port on your device or computer using the specified IP address. If the connection is successful, the port is open; if not, it is closed.

Checking your ports can help diagnose and resolve issues with internet-connected applications and services, such as email servers, gaming servers, and communication platforms. It ensures that your network is configured properly for the applications you use, which require certain ports to be open to function correctly.

Yes, using a Port Checker can enhance your network security by allowing you to verify that only the necessary ports are open. This minimizes vulnerabilities that can be exploited by unauthorized users and helps you maintain a secure network environment.

Absolutely. Using a Port Checker is a safe and passive check that does not expose your network to security risks. It simply checks the status of specified ports without making any changes to your network configuration.

For online gaming, particularly for games like Minecraft, a Port Checker can be used to ensure that your gaming server port (typically 25565 for Minecraft) is open and properly set up for port forwarding. This is crucial for allowing friends and other players to connect to your server from different networks.