GF · GUF

French Guiana phone number format

Full synthetic number for UI, QA, and parser tests. It is deliberately invalid and cannot be used for real communication.

Calling code

Invalid test number

+594 185 296 307 4

For UI and QA tests only: cannot be used for communication or pass phone-number validity checks.

Example international grouping+594 XXX XX XX XX

This masked mobile example shows one possible grouping. Other number types and prefixes may differ; the invalid test number above is separate QA data.

Possible lengths (digits): 9. Possible national-number lengths across number types in the bundled phone metadata. The invalid test number exceeds the longest listed length.

Data provenance

Sources

ITU-T E.164
Google libphonenumber metadata

Data snapshot: 2026-09-21