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
623-304 6 Phoenix AZ   630E ONVOY, LLC - AZ 666   2022-08-05   
623-304 7 Phoenix AZ   630E ONVOY, LLC - AZ 666   2022-08-05   
623-304 8 Phoenix AZ   630E ONVOY, LLC - AZ 666   2022-08-05   
623-304 9 Phoenix AZ   630E ONVOY, LLC - AZ 666   2022-08-05   
623-305 A Phoenix AZ PHNXAZMAXMD  6010 NEW CINGULAR WIRELESS PCS, LLC 666      
623-305 0 Phoenix AZ   630E ONVOY, LLC - AZ 666   2023-06-26   
623-305 1 Phoenix AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2023-04-23   
623-305 2 Phoenix AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2023-04-23   
623-305 3 Phoenix AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2023-04-23   
623-305 4 Phoenix AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2023-04-23   
623-305 5 Phoenix AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2023-04-23   
623-305 6 Phoenix AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2023-04-23   
623-305 7 Phoenix AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2023-04-23   
623-305 8 Phoenix AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2023-04-23   
623-305 9 Phoenix AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2023-04-23   
623-306 A Phoenix AZ PHNXAZMAXQY  624H ONVOY SPECTRUM, LLC 666      
623-306 0 Phoenix AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666   2023-11-21   
623-306 1 Phoenix AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666   2023-11-21   
623-306 2 Phoenix AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666   2023-11-21   
623-306 3 Phoenix AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666   2023-11-21   
623-306 4 Phoenix AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2023-12-22   
623-306 5 Phoenix AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2023-12-22   
623-306 6 Phoenix AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2023-12-22   
623-306 7 Phoenix AZ   197D VONAGE AMERICA LLC 666   2023-10-21   
623-306 8 Phoenix AZ   624H ONVOY SPECTRUM, LLC 666   2022-12-12   
623-306 9 Phoenix AZ   145J TERRA NOVA TELECOM INC. 666   2024-05-26   
623-307 A Phoenix AZ PHNXAZ28X6X  710A ALLO COMMUNICATIONS, LLC - NE 666      
623-307 0 Phoenix AZ   630E ONVOY, LLC - AZ 666   2023-06-26   
623-307 1 Phoenix AZ   710A ALLO COMMUNICATIONS, LLC - NE 666   2023-06-18   
623-307 2 Phoenix AZ   624H ONVOY SPECTRUM, LLC 666   2023-07-12   
623-307 3 Phoenix AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666   2023-11-21   
623-307 4 Phoenix AZ   630E ONVOY, LLC - AZ 666   2023-06-26   
623-307 5 Phoenix AZ   630E ONVOY, LLC - AZ 666   2023-06-26   
623-307 6 Phoenix AZ   630E ONVOY, LLC - AZ 666   2023-06-26   
623-307 7 Phoenix AZ   630E ONVOY, LLC - AZ 666   2023-06-26   
623-307 8 Phoenix AZ   630E ONVOY, LLC - AZ 666   2023-06-26   
623-307 9 Phoenix AZ   630E ONVOY, LLC - AZ 666   2023-06-26   
623-308 A Phoenix AZ PHNYAZUXDS0  7217 TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 666      
623-308 0 Phoenix AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2003-12-22   
623-308 1 Phoenix AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2003-12-22   
623-308 2 Phoenix AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2003-12-22   
623-308 3 Phoenix AZ   7217 TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 666      
623-308 4 Phoenix AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2004-01-31   
623-308 5 Phoenix AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2004-01-31   
623-308 6 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2005-02-19   
623-308 7 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2005-09-23   
623-308 8 Phoenix AZ   7217 TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 666      
623-308 9 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2005-09-23   
623-309 A Phoenix AZ PHNXAZMAXQY  624H ONVOY SPECTRUM, LLC 666      
623-309 0 Phoenix AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2024-07-06   

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

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