A Location Routing Number (LRN) is a unique identifier used in telecommunications to route calls efficiently within a network. It is particularly significant in the context of the Public Switched Telephone Network (PSTN) and is employed to direct calls to their intended destinations, typically in mobile networks or when managing calls between different service providers. LRNs are often associated with specific geographic locations or service areas, which helps keep track of where a call should be directed based on the number dialed.
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