Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 559 [Rate centres in NPA 559] [Dial plan for NPA 559]

NXX: 638

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
559-638 A Reedley CA RDLYCAXF63K  2319 FRONTIER CALIFORNIA INC. 728      

Last updated: Sun, 07 Dec 2025 22:02:11 UTC

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