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: CLMAMOXAYMD

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
573-810 3 Columbia MO 6529 T-MOBILE USA, INC. 521   2021-04-25   
573-814 8 Columbia MO 5562 METROPCS, INC. 521   2014-10-24   
573-818 9 Columbia MO 6529 T-MOBILE USA, INC. 521   2011-11-29   
573-940 1 Ashland MO 5562 METROPCS, INC. 521   2026-07-11   
573-940 4 Ashland MO 6529 T-MOBILE USA, INC. 521   2025-12-15   
573-969 5 Centralia MO 6529 T-MOBILE USA, INC. 521   2021-03-10   
573-969 9 Centralia MO 6529 T-MOBILE USA, INC. 521   2022-02-09   
573-982 7 Centralia MO 6529 T-MOBILE USA, INC. 521   2022-02-09   
573-982 9 Centralia MO 5562 METROPCS, INC. 521   2004-09-24   

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Last updated: Thu, 16 Jul 2026 02:21:55 UTC

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