Free tools
Small things we built and give away: check how a US number is formed, or see what public complaints say about a number.
About these tools
Free tools on this site do one small job well and show exactly what they checked.
- Free US phone number check: Check that a US phone number is well formed and see its area code, state and standard formats. In your browser, nothing sent.
- Free spam number lookup: See the line type, the carrier a number block was first assigned to, and a risk level from public complaint reports.
Each tool is free and needs no account.