Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 820 [Rate centres in NPA 820] [Dial plan for NPA 820]

NXX: 246

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
820-246 A Atascadero CA   6529 T-MOBILE USA, INC. 740   2026-01-03   
820-246 2 Atascadero CA   6529 T-MOBILE USA, INC. 740   2026-02-05   
820-246 3 Atascadero CA   6529 T-MOBILE USA, INC. 740   2026-02-05   
820-246 4 Atascadero CA   6529 T-MOBILE USA, INC. 740   2026-02-05   
820-246 5 Atascadero CA   6529 T-MOBILE USA, INC. 740   2026-02-05   
820-246 6 Atascadero CA   6529 T-MOBILE USA, INC. 740   2026-01-03   
820-246 7 Atascadero CA   6529 T-MOBILE USA, INC. 740   2026-01-03   
820-246 8 Atascadero CA   6529 T-MOBILE USA, INC. 740   2026-01-03   
820-246 9 Atascadero CA   6529 T-MOBILE USA, INC. 740   2026-01-03   

Last updated: Thu, 05 Feb 2026 23:41:55 UTC

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