Local Calling Guide

Area code/prefix search

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NPA: 925 [Rate centres in NPA 925] [Dial plan for NPA 925]

NXX: 570

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
925-570 A Dublin-San Ramon CA OKLECAZV1MD  6529 T-MOBILE USA, INC. 722      
925-570 0 Dublin-San Ramon CA   6529 T-MOBILE USA, INC. 722      
925-570 1 Dublin-San Ramon CA   6529 T-MOBILE USA, INC. 722      
925-570 2 Dublin-San Ramon CA   649C ONVOY, LLC - CA 722   2021-07-30   
925-570 3 Dublin-San Ramon CA   6529 T-MOBILE USA, INC. 722      
925-570 4 Dublin-San Ramon CA   6529 T-MOBILE USA, INC. 722      
925-570 5 Dublin-San Ramon CA   6529 T-MOBILE USA, INC. 722      
925-570 6 Dublin-San Ramon CA   5562 METROPCS, INC. 722      
925-570 7 Dublin-San Ramon CA   6529 T-MOBILE USA, INC. 722      
925-570 8 Dublin-San Ramon CA   6529 T-MOBILE USA, INC. 722      
925-570 9 Dublin-San Ramon CA   6529 T-MOBILE USA, INC. 722      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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