| Port | Protocol | Service | Description |
|---|
A port number identifies a specific service or process on a networked machine. Ports 0–1023 are well-known ports assigned to core protocols such as HTTP (80), HTTPS (443), SSH (22) and FTP (21); ports 1024–49151 are registered for popular applications like MySQL (3306) and Redis (6379); higher ports are dynamic. This page lists 60+ of the ports you meet most often, with the transport protocol, service name and a short description.
Type in the search box to filter by port number (like 443), protocol (TCP/UDP) or service name (like MySQL). This is handy when configuring firewalls, reading logs, or debugging why a connection is refused. Everything runs locally in your browser.