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
623-268 2 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2022-03-03   
623-268 3 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2022-03-03   
623-268 4 Phoenix AZ   624H ONVOY SPECTRUM, LLC 666   2021-05-23   
623-268 5 Phoenix AZ   624H ONVOY SPECTRUM, LLC 666   2021-05-23   
623-268 6 Phoenix AZ   624H ONVOY SPECTRUM, LLC 666   2021-05-23   
623-268 7 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2021-05-22   
623-268 8 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2021-05-22   
623-268 9 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2021-05-22   
623-269 A Phoenix AZ PHNXAZMAX1Z  318J COMCAST IP PHONE, LLC 666      
623-269 0 Phoenix AZ   624H ONVOY SPECTRUM, LLC 666   2021-02-25   
623-269 1 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2021-01-30   
623-269 2 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2021-01-30   
623-269 3 Phoenix AZ   3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 666   2021-01-31   
623-269 4 Phoenix AZ   3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 666   2021-01-31   
623-269 5 Phoenix AZ   7217 TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 666   2021-01-31   
623-269 6 Phoenix AZ   7217 TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 666   2021-01-31   
623-269 7 Phoenix AZ   7217 TELEPORT COMMUNICATIONS AMERICA, LLC - AZ 666   2021-01-31   
623-269 8 Phoenix AZ   073H TELNYX LLC 666   2021-01-31   
623-269 9 Phoenix AZ   073H TELNYX LLC 666   2021-01-31   
623-270 A Phoenix AZ PHNXAZMAX1Z  318J COMCAST IP PHONE, LLC 666      
623-270 0 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2021-07-12   
623-270 1 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2021-05-29   
623-270 2 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2021-05-29   
623-270 3 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2021-05-29   
623-270 4 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2021-05-29   
623-270 5 Phoenix AZ   3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 666   2021-06-12   
623-270 6 Phoenix AZ   3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 666   2021-06-12   
623-270 7 Phoenix AZ   3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 666   2021-07-04   
623-270 8 Phoenix AZ   3285 LEVEL 3 COMMUNICATIONS, LLC - AZ 666   2021-07-23   
623-270 9 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2021-07-12   
623-271 A Phoenix AZ PHNZAZZJAMD  6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666      
623-271 0 Phoenix AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666   2006-11-23   
623-271 1 Phoenix AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666   2006-11-23   
623-271 2 Phoenix AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666   2006-11-23   
623-271 3 Phoenix AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666   2006-11-23   
623-271 4 Phoenix AZ   6572 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ 666   2006-11-23   
623-271 5 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2007-01-19   
623-271 6 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2007-01-22   
623-271 7 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2007-01-22   
623-271 8 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2007-01-22   
623-271 9 Phoenix AZ   318J COMCAST IP PHONE, LLC 666   2007-01-22   
623-272 A Phoenix AZ TEMPAZNR5MD  6529 T-MOBILE USA, INC. 666      
623-272 0 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2021-02-07   
623-272 1 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2021-02-07   
623-272 2 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2021-02-07   
623-272 3 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2021-02-07   
623-272 4 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2021-02-07   
623-272 5 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2021-02-07   
623-272 6 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2021-02-07   
623-272 7 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2021-02-07   

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

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