[2] The LRN is stored in a database called a Service Control Point (SCP) that identifies a switching port for a local telephone exchange.
Using LRN, when a telephone number has been dialed, the local telephone exchange queries or "dips" a routing database, usually the SCP, for the LRN associated with the subscriber number.
The LRN removes the need for the public telephone number to identify the local exchange carrier.
On March 26, 2015, the FCC approved the recommendation of the North American Numbering Council (NANC) to award the contract to Telcordia Technologies, doing business as iconectiv, as the next Local Number Portability Administrator (LNPA), after 18 years of management by Neustar.
[6] With commission oversight, North American Portability Management, LLC (NAPM) negotiated the terms of a Master service agreement (MSA) with iconectiv.