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: 757

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
520-757 A Casa Grande AZ   6529 T-MOBILE USA, INC. 666   2025-05-18   
520-757 7 Casa Grande AZ   6529 T-MOBILE USA, INC. 666   2025-05-18   
520-757 8 Casa Grande AZ   6529 T-MOBILE USA, INC. 666   2025-05-18   
520-757 9 Casa Grande AZ   6529 T-MOBILE USA, INC. 666   2025-05-18   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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