Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 424 [Rate centres in NPA 424] [Dial plan for NPA 424]

NXX: 540

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
424-540 A San Pedro CA   7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 730   2025-02-17   
424-540 6 San Pedro CA   7139 TELEPORT COMMUNICATIONS AMERICA, LLC - CA 730   2025-02-17   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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