Number Portability

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The action required by a 9-1-1 Database Management System Provider, upon notification from a Donor Company, that makes the end user's telephone number record available for the Recipient Company to replace the customer details and Company ID.

LNP (Local Number Portability)

A process by which a telephone number may be reassigned from one Local Exchange Carrier to another.

Local Number Portability Administration Center (NPAC) Database

The eight (8) regional Number Portability Administration Center Databases which contain current Service Provider switching specific information about TNs involved in porting activity.

NPAC (Number Portability Administration Center)

Porting data is available throughout the U.S. from the NPAC database via IVR access. Throughout the 02-011 document referral to access porting data, does NOT mean IVR access.

GNP (Geographic Number Portability)

A form of telephone number portability, where a telephone number may be ported outside its originally assigned rate center (e.g., across LATA boundaries, or to another state). This is different from Local Number Portability (LNP) where the telephone number must be reused within the same rate center.

INP (Interim Number Portability)

The practice of moving a customer to a new carrier using a new telephone number, with the old telephone number forwarded to the new telephone number.