Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 925 [Rate centres in NPA 925] [Dial plan for NPA 925]

NXX: 554

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
925-554 A Antioch CA OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2026-03-05   
925-554 0 Antioch CA CNCRCADOCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 722   2026-03-06   
925-554 1 Antioch CA SNFCCAMKDS3  649C ONVOY, LLC - CA 722   2026-03-14   
925-554 2 Antioch CA OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2026-04-17   
925-554 3 Antioch CA OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2026-04-17   
925-554 4 Antioch CA OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2026-04-17   
925-554 5 Antioch CA OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2026-03-05   
925-554 9 Antioch CA OKLECAZV1MD  6529 T-MOBILE USA, INC. 722   2026-03-05   

Last updated: Tue, 01 Sep 2026 00:40:05 UTC

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