About OfficialAreaCode

OfficialAreaCode is a free, static website for understanding North American phone-number structure, area-code assignments, and common warning signs in suspicious communications. Our purpose is to explain what public numbering records mean and help visitors make safer decisions about unfamiliar calls and texts.

Where does the numbering information come from?

Area-code assignments come from a checked-in copy of the NANPA NPA report, dated 2026-09-28. US prefix assignments come from NANPA central-office records, dated 2026-09-29. Canadian prefix assignments come from the Canadian Numbering Administrator, dated 2026-09-28. Selected pages add narrower geographic details from regulators or carriers, with the relevant source link beside each detail.

How do we check and explain data?

The import scripts validate area-code and prefix formats, reject duplicate assignments, and record source dates. Pages distinguish an area code from a prefix assignment, an exchange or rate center from a city boundary, and a listed assignment company from a number’s current carrier. We show representative time-zone clocks only where a numbering area supports them; a clock is not a caller-location result.

Numbering plans and safety guidance can change. We label source dates and link to official records so you can check what was current when a page was built. Guides are reviewed against the linked agencies’ instructions. If a record appears wrong, use the contact page after a public contact address is configured; please include the page URL and source, without sending private phone numbers.

What can the tools tell you?

The interactive checks run in your browser. They can explain number structure, known numbering assignments, time zones, and selected message or URL patterns. OfficialAreaCode does not have a live subscriber directory, identify people, confirm a number is active, or assign live spam ratings. Read the tool limitations before relying on a result.

Where should a new visitor start?

For a number, try the phone-number checker and read how to interpret prefix records. For an unexpected demand, start with the suspicious-call guide. For a current numbering change, use the area-code change tracker and its administrator links.