About Port Reference
What It Does
A searchable reference for common TCP and UDP port numbers used across web development, system administration, databases, and networking.
Features
- 100+ ports — covering web, email, file transfer, remote access, databases, DNS, security, messaging, DevOps, and gaming
- Search — filter by port number, service name, protocol, or description
- Category filters — quick-filter by category with one click
- Port lookup — type any port number to instantly see what service uses it
- Responsive table — works on desktop and mobile
Privacy
Everything runs in your browser. No data is sent to any server.