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]

NXX: 212

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
623-212 A Phoenix AZ TEMPAZNR5MD  6529 T-MOBILE USA, INC. 666      
623-212 0 Phoenix AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2023-04-07   
623-212 1 Phoenix AZ   663G RE-INVENT TELECOM, LLC - AZ 666   2023-03-23   
623-212 2 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2023-03-04   
623-212 3 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2023-03-04   
623-212 4 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2023-03-04   
623-212 5 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2023-03-04   
623-212 6 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2023-03-04   
623-212 7 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2023-03-04   
623-212 8 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2023-03-04   
623-212 9 Phoenix AZ   6529 T-MOBILE USA, INC. 666   2023-03-04   

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

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