Port Number Lookup
A reference table of well-known TCP/UDP port numbers and services. Search by port number or service name. All processing happens inside your browser.
| Port | Protocol | Service | Description |
|---|
No matching port.
Frequently asked questions
What are well-known ports?
They are ports in the 0-1023 range assigned to standard services such as HTTP (80), HTTPS (443), and SSH (22). They are managed by IANA.
Can I search by port number or service name?
Yes. Enter a port number (e.g. 443) or service name (e.g. https) in the search box to filter and show only matching rows.
Does it check whether a port is actually open?
No. This tool is a reference table of standard port numbers and does not test whether a port is open on any particular server.