Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 623 [Rate centres in NPA 623] [Dial plan for NPA 623]

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
623-341 1 Phoenix AZ   6529 T-MOBILE USA, INC. 666      
623-341 2 Phoenix AZ   6529 T-MOBILE USA, INC. 666      
623-341 3 Phoenix AZ   6529 T-MOBILE USA, INC. 666      
623-341 4 Phoenix AZ   6529 T-MOBILE USA, INC. 666      
623-341 5 Phoenix AZ   6529 T-MOBILE USA, INC. 666      
623-341 6 Phoenix AZ   6529 T-MOBILE USA, INC. 666      
623-341 7 Phoenix AZ   6529 T-MOBILE USA, INC. 666      
623-341 8 Phoenix AZ   6529 T-MOBILE USA, INC. 666      
623-341 9 Phoenix AZ   6529 T-MOBILE USA, INC. 666      
623-343 A Phoenix AZ PHNXAZ28DS3  630E ONVOY, LLC - AZ 666      
623-343 0 Phoenix AZ   630E ONVOY, LLC - AZ 666   2022-10-31   
623-343 1 Phoenix AZ   630E ONVOY, LLC - AZ 666   2022-10-31   
623-343 2 Phoenix AZ   630E ONVOY, LLC - AZ 666   2022-10-31   
623-343 3 Phoenix AZ   630E ONVOY, LLC - AZ 666   2022-10-31   
623-343 4 Phoenix AZ   630E ONVOY, LLC - AZ 666   2022-10-31   
623-343 5 Phoenix AZ   630E ONVOY, LLC - AZ 666   2022-10-31   
623-343 6 Phoenix AZ   630E ONVOY, LLC - AZ 666   2022-10-31   
623-343 7 Phoenix AZ   630E ONVOY, LLC - AZ 666   2022-10-31   
623-343 8 Phoenix AZ   630E ONVOY, LLC - AZ 666   2022-10-31   
623-343 9 Phoenix AZ   630E ONVOY, LLC - AZ 666   2022-10-31   
623-344 A Phoenix AZ PHNZAZ87PS0  7175 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 666      
623-344 0 Phoenix AZ   7175 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 666      
623-344 1 Phoenix AZ   7175 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 666      
623-344 2 Phoenix AZ   7175 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 666      
623-344 3 Phoenix AZ   7175 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 666      
623-344 4 Phoenix AZ   7175 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 666      
623-344 5 Phoenix AZ   7175 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 666      
623-344 6 Phoenix AZ   7175 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 666      
623-344 7 Phoenix AZ   7175 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 666      
623-344 8 Phoenix AZ   7175 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 666      
623-344 9 Phoenix AZ   5562 METROPCS, INC. 666   2014-08-18   
623-349 A Phoenix AZ PHNZAZ87PS0  7175 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 666      
623-349 0 Phoenix AZ   630E ONVOY, LLC - AZ 666   2011-03-11   
623-349 1 Phoenix AZ   587F BANDWIDTH.COM CLEC, LLC - AZ 666   2010-04-25   
623-349 2 Phoenix AZ   5562 METROPCS, INC. 666   2013-11-15   
623-349 3 Phoenix AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666   2010-05-08   
623-349 4 Phoenix AZ   587F BANDWIDTH.COM CLEC, LLC - AZ 666   2010-04-25   
623-349 5 Phoenix AZ   7175 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 666      
623-349 6 Phoenix AZ   7175 ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM 666      
623-349 7 Phoenix AZ   587F BANDWIDTH.COM CLEC, LLC - AZ 666   2010-04-25   
623-349 8 Phoenix AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2025-02-10   
623-349 9 Phoenix AZ   5562 METROPCS, INC. 666   2013-12-09   
623-352 A Phoenix AZ PHNXAZ28DS3  630E ONVOY, LLC - AZ 666      
623-352 0 Phoenix AZ   630E ONVOY, LLC - AZ 666   2022-11-03   
623-352 1 Phoenix AZ   630E ONVOY, LLC - AZ 666   2022-11-03   
623-352 2 Phoenix AZ   630E ONVOY, LLC - AZ 666   2022-11-03   
623-352 3 Phoenix AZ   630E ONVOY, LLC - AZ 666   2022-11-03   
623-352 4 Phoenix AZ   630E ONVOY, LLC - AZ 666   2022-11-03   
623-352 5 Phoenix AZ   630E ONVOY, LLC - AZ 666   2022-11-03   
623-352 6 Phoenix AZ   630E ONVOY, LLC - AZ 666   2022-11-03   

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Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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