Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 650 [Rate centres in NPA 650] [Dial plan for NPA 650]

NXX: 250

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
650-250 A Palo Alto CA OKLECAZV1MD  6529 T-MOBILE USA, INC. 722      
650-250 0 Palo Alto CA   506J TWILIO INTERNATIONAL, INC. 722   2016-07-10   
650-250 1 Palo Alto CA   981E BANDWIDTH.COM CLEC, LLC - CA 722   2016-07-10   
650-250 2 Palo Alto CA   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2016-07-15   
650-250 3 Palo Alto CA   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2016-07-15   
650-250 4 Palo Alto CA   981E BANDWIDTH.COM CLEC, LLC - CA 722   2016-08-25   
650-250 5 Palo Alto CA   981E BANDWIDTH.COM CLEC, LLC - CA 722   2016-08-25   
650-250 6 Palo Alto CA   6010 NEW CINGULAR WIRELESS PCS, LLC 722   2016-08-15   
650-250 7 Palo Alto CA   6529 T-MOBILE USA, INC. 722   2016-08-18   
650-250 8 Palo Alto CA   7145 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 722   2017-02-22   
650-250 9 Palo Alto CA   6529 T-MOBILE USA, INC. 722   2016-06-13   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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