NPAC Access

How can you gain access to America’s only portability registry?

The Number Portability Administration Center/Service Management System (NPAC/SMS) is the system that supports the implementation of Local Number Portability (LNP) and is used to facilitate number porting in the United States. Some reasons a telephone number may need to be ported:

  • Inter-carrier or competitive porting: when a telephone number moves from the current Service Provider to a new Service Provider.
  • Intra-carrier porting: when a telephone number moves from one switch to another within the same telecommunications service provider's network.
  • Number pooling: when a telephone number moves to a new Service Provider in blocks of 1,000 to create an inventory of unassigned telephone numbers.

To facilitate porting, a Service Provider sends porting information, called “Subscription Version” information, to the NPAC. Service providers choose their access method based on business need.

A Subscription Version can be entered or modified via a:

  • Non-mechanized web-based Low Tech Interface (LTI)
  • Mechanized Service Order Administration (SOA) system
  • Request via the NPAC Help Desk
  • Service Bureau


Once a ported number is activated, real-time network downloads are sent from the NPAC to   all Local Service Management Systems (LSMSs). 

NPAC Customer Portal 

npac sub page image 200x200 law enforcement RIGHT A.jpgThe NPAC Customer Portal is a valuable resource for all NPAC Users and PTRS Users. 

From the Customer Portal, you can:

  • Access the Service Catalog with information regarding Bulk Data Downloads, Connectivity, Porting Services, Reports, Contact Change Requests, Subscription Version Requests and Testing.
  • Access the Knowledge Base, which includes Methods and Procedures, User Manuals, Reports, Forms and FAQs.
  • Access your company’s Account information, including Users and Contacts, Bulletin Boards, Dashboards, Billing Portal and Trainings.
  • Open a ticket to report an issue or request a service Start a chat session with a live Help Desk Agent