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on June 3, 2017
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Ringless voice mails from telemarketers
LRN database is kind of like the DNS of telephony. Since local numbers can be on any switch, LRN tells everyone which switch manages the number.
See: Location Routing Number
https://en.m.wikipedia.org/wiki/Location_Routing_Number
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See: Location Routing Number https://en.m.wikipedia.org/wiki/Location_Routing_Number