Local Calling Guide

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NPA: 385 [Rate centres in NPA 385] [Dial plan for NPA 385]

NXX: 421

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
385-421 A Alta UT SLKDUTBTAMD  6571 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 660      
385-421 0 Alta UT SLKDUTBTAMD  6571 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 660   2017-09-01   
385-421 1 Alta UT SLKDUTBTAMD  6571 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 660   2018-02-19   
385-421 2 Alta UT SLKDUTYI3MD  3231 LEVEL 3 COMMUNICATIONS, LLC - UT 660   2019-06-15   
385-421 3 Alta UT SLKDUTYI3MD  3231 LEVEL 3 COMMUNICATIONS, LLC - UT 660   2020-03-20   
385-421 4 Alta UT WVCYUT14DS1  871E ONVOY, LLC - UT 660   2019-07-08   
385-421 5 Alta UT WVCYUT14DS1  871E ONVOY, LLC - UT 660   2019-07-08   
385-421 6 Alta UT SLKCUTMAXLY  506J TWILIO INTERNATIONAL, INC. 660   2020-12-29   
385-421 7 Alta UT SLKDUTBTAMD  6571 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 660   2020-08-20   
385-421 8 Alta UT SLKDUTBTAMD  6571 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - UT 660   2018-08-26   
385-421 9 Alta UT WVCYUT14DS1  871E ONVOY, LLC - UT 660   2021-04-14   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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