Validate your input data in a simple way, an easy way and right way. no framework required.

Number Validation (NV) HTTP(s) API (Get, Post Method), This service validates if the phone number is in the correct format, verifies the correct country code, and identifies the original network where the number was registered. Unlike the HLR Lookup, the Number Validation service is offline and does not provide live data.

Validate common identity numbers in El Salvador. | Validar números de identidad en El Salvador.

Office365 有效号码检查器

A lightweight, client-side phone number validation library with comprehensive support for 181 countries and operator detection for 50+ telecommunications providers worldwide. Built with pure JavaScript and designed for privacy-first validation without external API dependencies.

A C++ library for validating user input, including numeric range checks, date validation, and safe string reading. It ensures robust and error-free input handling in console applications.

PHP Text Validator Lib is a library designed to validate input values in a consistent and reliable way. It allows you to verify whether a given string represents a valid email address, phone number, domain, IP address, numeric value, decimal number, binary content, date, or datetime...

Welcome to the official repository for Checky Verify Phone Number API – a powerful tool to determine the validity of phone numbers, retrieve comprehensive carrier information, and discover valid phone numbers within text inputs.

亚马逊数字检查器

Validate common identity numbers in El Salvador. | Validar números de identidad en El Salvador.

🔍 Validate strings with ease using PHP Text Validator Lib, a reliable library for checking emails, phone numbers, dates, and more to ensure data integrity.

Global Phone Validation & Carrier Lookup tool for high-volume batch processing (206 Countries Supported).