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: 506

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
559-506 A Hanford CA FRSNCA01XNY  9748 AMERICAN MESSAGING SERVICES, LLC 728      

Last updated: Wed, 18 Jun 2025 02:30:00 UTC

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