Port Reference
Quick reference for common TCP and UDP ports and services.
Look up a port
| Port | Protocol | Service | Description | Category |
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About This Tool
A searchable, filterable reference for common network port numbers used in web development, system administration, and networking.
- 100+ ports — covering web, email, databases, remote access, security, messaging, and more
- Search — filter by port number, service name, or description
- Categories — quick filter by Web, Email, Database, Remote Access, and more
- Port lookup — type any port number to instantly see what service uses it