Look up any network port in seconds. Enter a port number or a service name to see what it is used for, or browse the full list of common ports — free, with no sign-up needed.
Enter a port number or service name above.
How to Use
- Type a port number (e.g. 443) or a service name (e.g. ssh).
- Click Look Up Port to see the match.
- Click Show All to browse every common port.
Key Features
- Lookup by port number or service name.
- Dozens of common ports with their protocols.
- Browse the full list with one click.
- Case-insensitive service search.
- 100% private — everything runs in your browser.
FAQs
Is this port lookup free?
Yes. It is completely free with no sign-up and no limits.
What is a network port?
A port is a numbered endpoint for network connections. Services listen on specific ports, so knowing the port tells you which service handles the traffic.
Why do some ports list TCP/UDP?
Some services can run over both transport protocols, so both are shown where that applies.
Is my data stored anywhere?
No. Everything runs in your browser and nothing you enter is sent or stored.