Developers
E.164 phone number format: a practical guide for developers
How to normalize phone numbers to E.164 in JavaScript and Python, the pitfalls that break deduplication, and how the MobileValidate API normalizes input.
8 min read
Articles tagged “E.164”
6 articles.
Developers
E.164 regex: why a pattern is not enough to validate phone numbers
The common E.164 regex accepts impossible numbers. Real counterexamples, the shortest valid international numbers, and what to use a regex for instead.
7 min read
Research
How often do phone numbering plans change? 2019–2026 data
We counted 182 phone-metadata releases from 2019 to 2026: a median of 14 days apart, and 230 of 245 regions changed. Why validation goes stale.
8 min read
Developers
Phone number validation in JavaScript and Node.js
Validate phone numbers in JavaScript with libphonenumber-js: min vs max metadata, E.164, form input, and a live line-type check with runnable Node code.
8 min read
Developers
Phone number validation in PHP and Laravel
Validate phone numbers in PHP with libphonenumber-for-php, write a Laravel rule, and add a live line-type check with Guzzle that never breaks the form.
7 min read
Developers
Phone number validation in Python: phonenumbers, Pydantic and a live check
Validate phone numbers in Python with the phonenumbers library: is_valid vs is_possible, E.164, a Pydantic validator, pytest and a live check with httpx.
7 min read