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.

Switch: CENLMOAS0MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
573-682 0 Centralia MO 6275 UNITED STATES CELLULAR - MO 521   2003-04-27   
573-682 4 Centralia MO 6275 UNITED STATES CELLULAR - MO 521   2003-04-27   
573-682 7 Centralia MO 6275 UNITED STATES CELLULAR - MO 521   2003-04-27   
573-933 0 Centralia MO 6275 UNITED STATES CELLULAR - MO 521   2010-06-03   
573-933 1 Centralia MO 6275 UNITED STATES CELLULAR - MO 521   2012-10-22   
573-933 8 Centralia MO 6275 UNITED STATES CELLULAR - MO 521   2021-03-01   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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