Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 483 [Rate centres in NPA 483] [Dial plan for NPA 483]

NXX: 666

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
483-666 A Gantt AL   604E ONVOY, LLC - AL 478   2026-12-05   
483-666 0 Gantt AL   604E ONVOY, LLC - AL 478   2026-12-05   
483-666 6 Gantt AL   604E ONVOY, LLC - AL 478   2026-12-05   

Last updated: Sat, 10 Oct 2026 15:24:20 UTC

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