Countries
View All Number Validator APIs →Retrieve the list of supported countries with names and dialling codes. Use to build country selectors, validate dial codes before validation calls, or display reference data for international number input.
API Features
Supported areas reference Returns the full list of supported regions including country names and dialling codes
Parameter-free request Single POST with no body returns all supported countries; ideal for cache or startup load
Dial code mapping Use returned codes to validate or format international numbers before calling the validate endpoint
Structured JSON list Machine-readable list for building country pickers and validation logic in forms or APIs
Live API Demo
No parameters required. Click Query to call the API.
API Response (JSON)
{} Need Help?
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Use Cases
- Registration and contact forms: populate country or dial code dropdowns for phone input
- Pre-validation: resolve or check dial code before running full number validation to avoid invalid requests
- International number formatting: reference correct dial codes when normalizing user input to E.164
- Documentation and help: display supported countries and codes in product or API docs
- Multi-region apps: load country and dial code reference once and reuse across validation and display