Port Number Lookup - Common TCP/UDP Ports Reference Free

How to Use the Port Lookup

1. Search by port number — type a number (e.g. 80, 443, 22)
2. Or search by service name — type “HTTP”, “SSH”, “DNS”
3. Browse the table — scroll through common ports with descriptions

Perfect for network administrators, firewall configurators, CCTV installers setting up remote access, and IT professionals.

Features

• Quick search — filter by port number or service name
• Well-known ports — 0-1023 with official assignments
• Registered ports — common services above 1024
• CCTV-specific — includes common surveillance ports (RTSP, ONVIF, HTTP for cameras)
• Color-coded — well-known, registered, and dynamic ports visually distinguished