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: OKLDCAAN3KD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
650-220 A San Mateo CA 9748 AMERICAN MESSAGING SERVICES, LLC 722      
650-221 A Redwood City CA 6906 AMERICAN MESSAGING SERVICES, LLC 722      
650-239 A Millbrae CA 7379 MATRIX TELECOM, LLC. SII TNCI - CA 722      
650-240 A San Mateo CA 7379 MATRIX TELECOM, LLC. SII TNCI - CA 722      
650-247 A Palo Alto CA 6906 AMERICAN MESSAGING SERVICES, LLC 722      
650-249 A Redwood City CA 7379 MATRIX TELECOM, LLC. SII TNCI - CA 722      
650-277 A Redwood City CA 6967 33 WIRELESS INC. 722      
650-284 A Half Moon Bay CA 7379 MATRIX TELECOM, LLC. SII TNCI - CA 722      
650-360 A South San Francisco CA 7379 MATRIX TELECOM, LLC. SII TNCI - CA 722      
650-406 A Mountain View CA 6906 AMERICAN MESSAGING SERVICES, LLC 722      
650-408 A San Mateo CA 6906 AMERICAN MESSAGING SERVICES, LLC 722      
650-423 A Redwood City CA 7379 MATRIX TELECOM, LLC. SII TNCI - CA 722      
650-456 A Pescadero CA 7379 MATRIX TELECOM, LLC. SII TNCI - CA 722      
650-500 A San Carlos-Belmont CA 6906 AMERICAN MESSAGING SERVICES, LLC 722      
650-523 A San Mateo CA 7379 MATRIX TELECOM, LLC. SII TNCI - CA 722      
650-590 A San Carlos-Belmont CA 7379 MATRIX TELECOM, LLC. SII TNCI - CA 722      
650-618 A Palo Alto CA 7379 MATRIX TELECOM, LLC. SII TNCI - CA 722      
650-644 A Palo Alto CA 7379 MATRIX TELECOM, LLC. SII TNCI - CA 722      
650-649 A Redwood City CA 7379 MATRIX TELECOM, LLC. SII TNCI - CA 722      
650-684 A Millbrae CA 7379 MATRIX TELECOM, LLC. SII TNCI - CA 722      
650-870 A South San Francisco CA 7379 MATRIX TELECOM, LLC. SII TNCI - CA 722      
650-887 A Los Altos CA 7379 MATRIX TELECOM, LLC. SII TNCI - CA 722      
650-899 A La Honda CA 7379 MATRIX TELECOM, LLC. SII TNCI - CA 722      
650-963 A Mountain View CA 7379 MATRIX TELECOM, LLC. SII TNCI - CA 722      

Last updated: Sat, 14 Sep 2019 01:44:23 UTC

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