Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 669 [Rate centres in NPA 669] [Dial plan for NPA 669]

NXX: 577

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
669-577 A Sunnyvale CA SNJUCACL7MD  965H FRACTEL, LLC 722      
669-577 0 Sunnyvale CA   649C ONVOY, LLC - CA 722   2021-08-30   
669-577 1 Sunnyvale CA   649C ONVOY, LLC - CA 722   2021-08-30   
669-577 2 Sunnyvale CA   649C ONVOY, LLC - CA 722   2021-08-30   
669-577 3 Sunnyvale CA   649C ONVOY, LLC - CA 722   2021-08-30   
669-577 4 Sunnyvale CA   6529 T-MOBILE USA, INC. 722   2021-10-30   
669-577 5 Sunnyvale CA   6529 T-MOBILE USA, INC. 722   2021-10-30   
669-577 6 Sunnyvale CA   6529 T-MOBILE USA, INC. 722   2021-10-30   
669-577 7 Sunnyvale CA   965H FRACTEL, LLC 722   2021-08-29   
669-577 8 Sunnyvale CA   624H ONVOY SPECTRUM, LLC 722   2021-11-15   
669-577 9 Sunnyvale CA   624H ONVOY SPECTRUM, LLC 722   2021-11-15   

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

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