Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

NPA: 483 [Rate centres in NPA 483] [Dial plan for NPA 483]

NXX: 483

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
483-483 A Oakland (Chambers) AL   604E ONVOY, LLC - AL 438   2026-12-06   
483-483 4 Oakland (Chambers) AL   604E ONVOY, LLC - AL 438   2026-12-06   
483-483 8 Oakland (Chambers) AL   604E ONVOY, LLC - AL 438   2026-12-06   

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

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.