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: 650 [Rate centres in NPA 650] [Dial plan for NPA 650]

NXX: 557

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
650-557 A Pacifica CA PCFCCA11DS0  9740 PACIFIC BELL 722      
650-557 0 Pacifica CA PCFCCA11DS0  9740 PACIFIC BELL 722      
650-557 1 Pacifica CA PCFCCA11DS0  9740 PACIFIC BELL 722      
650-557 2 Pacifica CA SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
650-557 3 Pacifica CA SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722      
650-557 4 Pacifica CA SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722      
650-557 5 Pacifica CA SNVACAHZ0MD  508J CENTURYLINK COMMUNICATIONS, LLC 722      
650-557 6 Pacifica CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722      
650-557 7 Pacifica CA SNFCCAMKX1X  9262 UTILITY TELECOM GROUP, LLC - CA 722      
650-557 8 Pacifica CA OKLECAZVGT0  6529 T-MOBILE USA, INC. 722      
650-557 9 Pacifica CA PCFCCA11DS0  9740 PACIFIC BELL 722      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

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