---
title: "def NNACL Add/Edit field descriptions"
slug: "def-nnacl-add-edit-field-descriptions"
updated: 2026-08-10T20:20:17Z
published: 2026-08-10T20:20:17Z
canonical: "help.idibilling.com/def-nnacl-add-edit-field-descriptions"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://help.idibilling.com/llms.txt
> Use this file to discover all available pages before exploring further.

# def NNACL Add/Edit field descriptions

def NNACL Add/Edit field descriptions

| NPA | The Numbering Plan Area (Area Code) |
| --- | --- |
| NXX | The exchange or prefix |
| Nxx Type | The type used for the NXX as defined by Telcordia. |
| Switch Ident | The description of the switch that routes the calls. Usually the COMMON LANGUAGE® Location Identifier (CLLI™). (COMMON LANGUAGE is a registered trademark and CLLI is a trademark of Telcordia Technologies, Inc.) |
| LATA | The LATA number of the switch. |
| OCN | The Operating Company Number of the local service provider assigned the NXX. |
| SSC | The Special Service Code, used with the NXX, further defines special use of the NPANXX. |
| State | The name of the state associated with the NPANXX |
| Rate Center Name | The name of the area within the exchange |
| IsPortable | **Y** indicates some numbers may be ported to another company. |
| Is Local | Indication of whether or not your company has the right to sell local service in the NPANXX area. |
| Region Name | The name of the region your company has associated with the NPANXX |
| Local Prov Comp | The company that provides the local service. |
| Inter Prov Comp | The company that provides the long distance service. |
| Intra Prov Comp | The company that provides the extended local service. |
| Alt Inter Prov Comp | An alternative company that provides long distance service. |
| Alt Intra Prov Comp | An alternative company that provides the extended local service. |