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: 415 [Rate centres in NPA 415] [Dial plan for NPA 415]

NXX: 439

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
415-439 A San Francisco: Central DA CA SNFCCA01DS1  9740 PACIFIC BELL 722      
415-439 0 San Francisco: Central DA CA SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2010-02-26   
415-439 1 San Francisco: Central DA CA SNFCCA01DS1  9740 PACIFIC BELL 722      
415-439 2 San Francisco: Central DA CA SNFCCA01DS1  9740 PACIFIC BELL 722      
415-439 3 San Francisco: Central DA CA SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2005-08-17   
415-439 4 San Francisco: Central DA CA SNFCCA01DS1  9740 PACIFIC BELL 722      
415-439 5 San Francisco: Central DA CA SNFCCA01DS1  9740 PACIFIC BELL 722      
415-439 6 San Francisco: Central DA CA SNFCCA01DS1  9740 PACIFIC BELL 722      
415-439 7 San Francisco: Central DA CA SNFCCA01DS1  9740 PACIFIC BELL 722      
415-439 8 San Francisco: Central DA CA SNFCCA01DS1  9740 PACIFIC BELL 722      
415-439 9 San Francisco: Central DA CA SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2005-08-17   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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