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In today’s interconnected world, phone numbers play a vital role in digital communication, enabling services from messaging and voice calls to authentication and marketing. However, managing and validating international phone numbers is complex due to varying formats, country codes, number lengths, and usage conventions. That’s where phone number libraries come into play. These libraries are critical tools for developers building applications that need to work reliably across international borders.

What Is a Phone Number Library?
A phone number library is a software library that provides tools phone number library for parsing, validating, formatting, and handling phone numbers in a consistent and standardized way. These libraries are especially useful for developers who work with global applications where users come from different countries and regions.

Instead of manually writing logic to determine if a number is valid or to format it according to local rules, developers can rely on these libraries to manage the complexity. Popular phone number libraries include Google’s libphonenumber, PhoneNumbers for Python, and PhoneNumberKit for Swift.