This plugin uses the Byteplant Phone-Validator API (https://www.phone-validator.net) to check if a phone number is really valid and callable. The plugin works seamlessly with: * Contact Form 7 * Gravity Forms * Ninja Forms * WooCommerce The plugin can also be easily integrated into any 3rd party form. How does it work? The Phone-Validator real-time validation API provides detailed information for each phone number: * Status: VALID/CONFIRMED, VALID/UNCONFIRMED or INVALID * Line type: FIXED_LINE, MOBILE, VOIP etc. * Geolocation: Region and city * Phone number correction and re-formatting according to national and international standards The plugin requires an API Key (free, no credit card required): https://www.phone-validator.net/api.html During the entire validation process, the phone number is not contacted in any way, nor will any phones connected to a line ring. Data Protection and Privacy Policy: see the Frequently Asked Questions section.