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Phone utility

Phone Number Validator

Check whether a number follows a supported North American format and uses an in-service area code.

Validate a number

Enter a 10-digit +1 North American number. We check its structure and area-code record, not the caller’s identity or whether the line is active.

Processed locally in your browser. Nothing you enter is sent to OfficialAreaCode or saved.

What does “valid” mean here?

Correct punctuation and ten digits are only the first checks. The area code must also be in service, and a full number can still be unassigned or inactive. This tool cannot call the number or query carrier records.

If you need to understand the code’s numbering region, use the area-code finder. If you need a display format, use the phone number formatter.