Phone Number Checker

Possible describes a supported length. Valid describes a numbering pattern in the pinned metadata. A result does not confirm assignment, activation, reachability, safety or the identity of the person using a number.

A shared calling code can leave several country candidates. The Checker does not choose the first country in a list. A non-geographic service code is shown as a service, rather than a country.

Significant leading zeros are preserved by the library. Extensions are kept separately from the base E.164 number. Formats of invalid input are metadata renderings, not dialing instructions.

Source-listed NPA regions are available only where the retained country-qualified NANPA reference supports them. They do not locate a subscriber or device. Subnational regions elsewhere, initially assigned operators and current carriers are not supplied by this Checker.

Why does a national number need a country?

The same local digits can belong to different numbering plans. Choose the country the number is written for, or enter an international number beginning with +. No country is guessed from national input.

How many numbers can I check?

One number, or up to 100 non-empty lines in a batch. Blank lines are ignored. A list above the limit is not partially processed; remove the extra lines before checking.

What stays private?

Numbers are processed locally. They are not added to URLs, requests, logs, browser storage or analytics. CSV is downloaded only when you choose it; use Clear to remove the current input and results.

Where can I find dialing instructions?

Select an origin above to open its reviewed guidance. A resolved destination links to its country guide. Shared-code, provider and number-type qualifications still apply; a formatted number alone is not a universal procedure.