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.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

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

NXX: 458

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
650-458 A San Mateo CA SNFCCAMMDS0  485E ASTOUND BROADBAND, LLC - CA 722   2021-02-01   
650-458 0 San Mateo CA SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2011-08-29   
650-458 1 San Mateo CA OKLECAZVGT0  5562 METRO PCS, INC. 722   2008-12-21   
650-458 2 San Mateo CA SNJSCAYBDS0  7453 U.S. TELEPACIFIC CORP. - CA 722   2008-11-16   
650-458 3 San Mateo CA SNFCCAMMDS0  485E ASTOUND BROADBAND, LLC - CA 722      
650-458 4 San Mateo CA SNFCCASY5MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 722   2010-11-20   
650-458 5 San Mateo CA SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2012-06-18   
650-458 6 San Mateo CA SNFCCAMMDS0  485E ASTOUND BROADBAND, LLC - CA 722      
650-458 7 San Mateo CA SNFCCA21XUY  981E BANDWIDTH.COM CLEC, LLC - CA 722   2010-12-06   
650-458 8 San Mateo CA SNFCCAMMDS0  485E ASTOUND BROADBAND, LLC - CA 722      
650-458 9 San Mateo CA SNFCCAMMDS0  485E ASTOUND BROADBAND, LLC - CA 722      

Last updated: Sun, 28 Feb 2021 19:06:05 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.