Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Casa Grande, AZ

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NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
520-866 3 FLRNAZMARS1  9636 QWEST CORPORATION 666   2007-06-11   
520-866 4 FLRNAZMARS1  9636 QWEST CORPORATION 666      
520-866 5 FLRNAZMARS1  9636 QWEST CORPORATION 666      
520-866 6 FLRNAZMARS1  9636 QWEST CORPORATION 666      
520-866 7 FLRNAZMARS1  9636 QWEST CORPORATION 666      
520-866 8 FLRNAZMARS1  9636 QWEST CORPORATION 666   2007-06-11   
520-866 9 MRCPAZMADS0  9636 QWEST CORPORATION 666   2007-07-16   
520-868 A FLRNAZMARS1  9636 QWEST CORPORATION 666      
520-876 A CSGRAZMADS0  9636 QWEST CORPORATION 666      

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Last updated: Sun, 17 May 2026 03:26:51 UTC

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