Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 310 [Rate centres in NPA 310] [Dial plan for NPA 310]

NXX: 920

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
310-920 A Compton: Gardena DA CA TRNECAGB7MD  6529 T-MOBILE USA, INC. 730      

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

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