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LERG Routing Guide
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{{Short description|Database of telecommunications}} {{More citations needed|date=May 2018}} The '''Local Exchange Routing Guide''' ('''LERG''') is a database of telecommunications numbering resources for use in the administration and operation of the [[North American Numbering Plan]] (NANP) by the [[North American Numbering Plan Administrator|NANP administrator]] (NANPA) and [[telecommunications service provider]]s. This data supports the local exchange network of the NANP and identifies planning changes in the network. The database has been maintained by private sector entities assigned by the [[Federal Communications Commission]] (FCC) to perform the NANPA function. The database is produced in the ''TruOps Telecom Routing Administration'' (TRA) product group of [[iconectiv|iconectiv, LLC]], formerly named [[Telcordia]], a division of [[Ericsson]] since 2012.
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