Phone Number Grader

US phone-numbering data: NANPA, 20 Sep 2026

Drop your list here, or click to choose a file

CSV or tab-delimited (VAN, PDI, or the state voter file export). Nothing leaves this browser -- see the page's own Content-Security-Policy in the page source.

Runs entirely in this tab. The page contains no code that sends data anywhere, and its Content-Security-Policy above (default-src 'none') blocks it from fetching or loading anything from the network -- your list never leaves this computer.

This tool never confirms a number is live or belongs to the named person -- it only removes numbers the public numbering data shows provably cannot be live, and ranks the rest. See README.md for what free data can and cannot prove, and for the TCPA / 52 USC 30111(a)(4) rules on using the output.

A "no" in the mobile column does not mean landline -- numbers move between carriers after porting, so never use it to clear a number for autodialed or prerecorded calls or texts.