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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Switch: VLLJCA01DS1

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
707-648 5 Vallejo CA 9740 PACIFIC BELL 722      
707-648 7 Vallejo CA 9740 PACIFIC BELL 722      
707-648 8 Vallejo CA 9740 PACIFIC BELL 722      
707-648 9 Vallejo CA 9740 PACIFIC BELL 722      
707-649 A Vallejo CA 9740 PACIFIC BELL 722      
707-651 A Vallejo CA 9740 PACIFIC BELL 722      
707-651 0 Vallejo CA 9740 PACIFIC BELL 722      
707-651 1 Vallejo CA 9740 PACIFIC BELL 722      
707-651 2 Vallejo CA 9740 PACIFIC BELL 722      
707-651 3 Vallejo CA 9740 PACIFIC BELL 722      
707-651 4 Vallejo CA 9740 PACIFIC BELL 722      
707-651 5 Vallejo CA 9740 PACIFIC BELL 722      
707-651 7 Vallejo CA 9740 PACIFIC BELL 722      
707-652 A Vallejo CA 9740 PACIFIC BELL 722      
707-652 0 Vallejo CA 9740 PACIFIC BELL 722      
707-654 A Vallejo CA 9740 PACIFIC BELL 722      
707-654 1 Vallejo CA 9740 PACIFIC BELL 722      

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Last updated: Tue, 31 Mar 2026 13:56:49 UTC

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