Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 520 [Rate centres in NPA 520] [Dial plan for NPA 520]

NXX: 763

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
520-763 A Casa Grande AZ   6529 T-MOBILE USA, INC. 666   2025-09-05   
520-763 0 Casa Grande AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2025-11-07   
520-763 1 Casa Grande AZ   6010 NEW CINGULAR WIRELESS PCS, LLC 666   2025-11-07   
520-763 2 Casa Grande AZ   6529 T-MOBILE USA, INC. 666   2025-10-12   
520-763 3 Casa Grande AZ   6529 T-MOBILE USA, INC. 666   2025-10-12   
520-763 4 Casa Grande AZ   6529 T-MOBILE USA, INC. 666   2025-10-12   
520-763 5 Casa Grande AZ   6529 T-MOBILE USA, INC. 666   2025-10-12   
520-763 7 Casa Grande AZ   6529 T-MOBILE USA, INC. 666   2025-09-05   
520-763 8 Casa Grande AZ   6529 T-MOBILE USA, INC. 666   2025-09-05   
520-763 9 Casa Grande AZ   6529 T-MOBILE USA, INC. 666   2025-09-05   

Last updated: Thu, 16 Oct 2025 03:04:18 UTC

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