scope:

Purpose

The purpose of this document is to provide guidelines for NPA code relief planning activities. This includes the relief planning process, industry notification process and NANPA's¹ responsibilities to affected parties and applicable regulatory authorities within the North American Numbering Plan area. It also provides relief planning principles, administrative responsibilities and industry notification requirements. The steps of the NPA code relief planning process are listed and the alternative methods of providing relief and their various attributes are described.

¹ In the U.S., CO Code Administration and NPA Relief Coordination is currently done by the NANPA except in those states that have chosen to act as their own NPA Relief Coordinator. Presently, the Ohio PSC has chosen to be the NPA Relief Coordinator for the state of Ohio. ATIS INC Central Office Code (NXX) Assignment Guidelines (ATIS-0300051), and ATIS NGIIF- Recommended Notification Procedures to Industry for Changes in Access Network Architecture (ATIS-0300046).