Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 508 [Rate centres in NPA 508] [Dial plan for NPA 508]

NXX: 600

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
508-600 A Hyannis MA   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2026-10-16   
508-600 0 Hyannis MA   883K AHOI LLC 128   2026-10-19   
508-600 9 Hyannis MA   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 128   2026-10-16   

Last updated: Tue, 01 Sep 2026 00:40:05 UTC

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