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: 639

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
650-639 A San Mateo CA SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2025-01-16   
650-639 0 San Mateo CA   624H ONVOY SPECTRUM, LLC 722   2025-01-30   
650-639 1 San Mateo CA   624H ONVOY SPECTRUM, LLC 722   2025-05-16   
650-639 2 San Mateo CA   624H ONVOY SPECTRUM, LLC 722   2025-05-16   
650-639 3 San Mateo CA   624H ONVOY SPECTRUM, LLC 722   2025-05-16   
650-639 4 San Mateo CA   433E SONIC TELECOM, LLC - CA 722   2025-05-28   
650-639 5 San Mateo CA SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2025-01-16   
650-639 6 San Mateo CA SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2025-01-16   
650-639 7 San Mateo CA SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2025-01-16   
650-639 8 San Mateo CA SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2025-01-16   
650-639 9 San Mateo CA SNTDCAUJCM9  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2025-01-16   

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

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