Is my input uploaded?

No. This website tool runs in your browser. Only the optional public API version sends input to the authenticated API route.

Can I use this in an application?

Yes. The Developers documentation lists the authenticated endpoint, request parameters and response example.

Should I verify the result?

Yes. Deterministic tools are designed for repeatable results, but format-specific or heuristic output should still be checked for your use case.

IP & Network Tools

Port Number Lookup

Identify common network services and port ranges for TCP and UDP port numbers.

Free foreverRuns in your browserNo sign-up

Port number

Result

Enter your values and select look up port.

About the Port Number Lookup

Port Number Lookup is a focused browser-based utility. Identify common network services and port ranges for TCP and UDP port numbers.

The calculation runs locally in your browser, so the supplied value is not uploaded to ToolsOnDuty. The same capability is also available through the authenticated developer API.

Key features

Fast local processing with explicit validation
Copy-ready structured result
No account, upload or paid data provider required

How to use

1Enter a port number from 0 to 65535.
2Choose any available conversion or formatting options.
3Run the tool and review its range and common service.

Examples

Port Number Lookup example

Input: a port number from 0 to 65535

Output: its range and common service

Frequently asked questions

Is my input uploaded?: No. This website tool runs in your browser. Only the optional public API version sends input to the authenticated API route.
Can I use this in an application?: Yes. The Developers documentation lists the authenticated endpoint, request parameters and response example.
Should I verify the result?: Yes. Deterministic tools are designed for repeatable results, but format-specific or heuristic output should still be checked for your use case.