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TCP/UDP Port Reference

Search common TCP and UDP port numbers by port or service name. Covers web, email, database, file transfer, messaging, monitoring, and more.

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Port Protocol Service Category Description

What is TCP/UDP Port Reference?

TCP/UDP Port Reference lists common network ports and the services usually associated with them. It is useful for server setup, firewall rules, troubleshooting connectivity, and understanding what traffic a port number often represents.

How to Use TCP/UDP Port Reference

  1. Search for a port number or service name.
  2. Review the protocol and service mapping shown in the result.
  3. Compare nearby or related ports if you are debugging a connection issue.
  4. Use the reference while configuring firewalls, proxies, or monitoring alerts.

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Understand Port Number Reference ▾
Example
Input Port 22 →SSH (TCP): Secure Shell remote access
Output Port 80 →HTTP (TCP): Web traffic
Common Use Cases
  • Look up common service ports during networking or firewall debugging
  • Check whether a port is typically used by HTTP, SSH, databases, or DNS
  • Review well-known ports when configuring infrastructure and security groups
  • Use as a quick reference while reading logs or packet captures
Why Use This Tool
  • Useful for networking, firewall, proxy, and container debugging.
  • Helps map ports to common services quickly during ops work.
  • Runs locally as a fast reference without opening external docs.
Frequently Asked Questions
Does it include Docker and Kubernetes common ports?

Yes —popular container and orchestration tool ports (2376, 6443, 10250, etc.) are included.

Can two services use the same port number?

Only if they use different protocols (one TCP, one UDP). Two TCP services cannot share a port on the same interface.

What does TCP/UDP Port Reference —Common Port Numbers List do?

TCP/UDP Port Reference —Common Port Numbers List runs entirely in your browser and helps you complete this task without uploading data to a server.

Is TCP/UDP Port Reference —Common Port Numbers List free to use?

Yes. This tool is free to use and does not require sign-up.