Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
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NPA: 314 [Rate centres in NPA 314] [Dial plan for NPA 314]

NXX: 579

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
314-579 A Creve Coeur MO STLSMO27DS0  9533 SOUTHWESTERN BELL 520      
314-579 0 Creve Coeur MO STLSMO27DS0  9533 SOUTHWESTERN BELL 520      
314-579 1 Creve Coeur MO STLSMO27DS0  9533 SOUTHWESTERN BELL 520      
314-579 2 Creve Coeur MO STLSMO27DS0  9533 SOUTHWESTERN BELL 520      
314-579 3 Creve Coeur MO STLSMOWQDS2  093F ONVOY, LLC MO 520   2019-09-27   
314-579 4 Creve Coeur MO STLSMO27DS0  9533 SOUTHWESTERN BELL 520      
314-579 5 Creve Coeur MO STLSMO27DS0  9533 SOUTHWESTERN BELL 520      
314-579 6 Creve Coeur MO STLSMO27DS0  9533 SOUTHWESTERN BELL 520      
314-579 7 Creve Coeur MO STLSMO27DS0  9533 SOUTHWESTERN BELL 520      
314-579 8 Creve Coeur MO STLSMO27DS0  9533 SOUTHWESTERN BELL 520      
314-579 9 Creve Coeur MO STLSMO27DS0  9533 SOUTHWESTERN BELL 520      

Last updated: Tue, 04 May 2021 15:04:27 UTC

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