Hi @Bharathi Hattikal , Welcome to Microsoft Q&A,
Microsoft does not have such an API yet. Consider using libphonenumber-csharp - a C# port of Google's libphonenumber. It can parse and validate phone numbers, and automatically identify the country if the number is in international format (with a "+" prefix), without requiring you to pre-specify the country code or default region.
The library has examples on the Nuget page and github.
Best Regards,
Jiale
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