Random Phone Number Generator

Random Phone Number Generator

Generates 1 through 1,000 phone-shaped test strings in either a mainland-China mobile pattern or a US +1-555 pattern.

Digits and prefixes are selected with crypto.getRandomValues and rejection sampling. Duplicate outputs are possible because results are generated independently.

The China option combines one of eight familiar mobile prefixes with eight random digits. Those results can coincide with assigned real numbers and must not be called, messaged or used as verified contact data.

The US option is formatted as +1-555-NNN-NNNN for visual test data. It does not validate an area code, carrier, assignment status, SMS delivery, E.164 reachability or national numbering rules.

Use these values only in isolated mockups and test fixtures. For software that may dial, send messages or contact users, use provider-issued sandbox numbers or clearly reserved test ranges instead.