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.

Bromide, OK

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
580-638 A BRMDOKXARP0  2010 MID-AMERICA TEL., INC. 536      
580-638 0   2010 MID-AMERICA TEL., INC. 536      
580-638 1   624H ONVOY SPECTRUM, LLC 536   2025-01-22   
580-638 2   2010 MID-AMERICA TEL., INC. 536      
580-638 4   2010 MID-AMERICA TEL., INC. 536      
580-638 8   409F ONVOY, LLC - OK 536   2023-11-25   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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