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.

A Flutter plugin that lets you make HTTP requests over cellular, even when on WiFi. It is meant to be used as part of the Vonage Number Verification flow.