uncheckederror PhoneNumbersNA by: uncheckederror .NET 10.0 This package targets .NET 10.0. The package is compatible with this framework or higher. 125,940 total downloads last updated 11/20/2025 Latest version: 1.0.19 Phone Numbers NANPA VOIP Telephony NPA NXX XXXX Validation Parsing A library for parsing phone numbers. Built around the North American Numbering Plan and the NANPA formal specification.