Find any 945- phone number in Texas

# Texas Area Code 945

## Overview of Area Code 945

Area code 945 serves the Rio Grande Valley region of South Texas, covering cities such as Brownsville, Harlingen, and McAllen. This area code was established in 2015 as an overlay to the existing 956 area code, meaning both numbers serve the same geographic region. The 945 area code was created in response to the growing population and increased telecommunications demand in South Texas, particularly as the Rio Grande Valley experienced significant economic development and population growth. Residents and businesses in this region can obtain phone numbers with either the 945 or 956 area code, depending on availability and carrier assignment.

## The North American Numbering Plan System

Area codes like 945 are part of the North American Numbering Plan (NANP), a comprehensive system that organizes telephone numbers across the United States, Canada, and several Caribbean nations. The NANP assigns three-digit area codes to geographic regions, followed by a seven-digit local phone number, creating the familiar 10-digit format (NPA-NXX-XXXX). The Federal Communications Commission (FCC) and the North American Numbering Plan Administrator (NANPA) oversee the assignment and management of area codes to ensure efficient allocation of telephone numbers and prevent conflicts. When regions exhaust available numbers within an existing area code, overlay area codes like 945 are introduced, allowing continued growth without requiring all existing numbers to change.