Country-Specific Phone Number Lengths

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Here are some examples of typical phone number lengths (including country code):

Country Example Phone Number Total Digits (w/ country code)

Depending on the country, the length may vary, but storing phone numbers in E.164 format ensures a unified approach.

Best Practices for Storing Phone Numbers in a Database
1. Use a String or VARCHAR Data Type
Avoid using numeric types (like INT or BIGINT) for canada mobile phone number list phone numbers. These can:

Strip leading zeroes (critical in some regions)

Limit the size of international numbers

Prevent storing special characters like "+"

Recommended:
Use VARCHAR(15) to VARCHAR(20) depending on whether you store formatting characters (like dashes or parentheses).

2. Normalize to E.164 Format
Ensure that all phone numbers are stored in E.164 format during data entry or import. This avoids inconsistencies and simplifies querying or integration with external services.

3. Separate Country Code (Optional)
For multi-country applications, consider storing the country code separately. This can improve searchability and allow for better UI filtering.

Example schema:

country_code (e.g., +1)



4. Use Input Validation
Integrate input validation to check for:

Valid country code

Correct length per region

No illegal characters or spaces

Use libraries like Google’s libphonenumber for accurate validation and formatting.

Common Mistakes to Avoid
Using Numeric Data Types
Numeric data types can’t accommodate characters like “+” or “-”, and they strip essential leading zeroes.