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: RCPTMO020MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
660-442 1 Mound City MO 454H MIDWEST DATA CENTER, INC. - MO 524   2015-04-16   
660-623 6 Tarkio MO 454H MIDWEST DATA CENTER, INC. - MO 524   2015-04-16   
660-683 1 Craig MO 454H MIDWEST DATA CENTER, INC. - MO 524   2018-05-25   
660-686 1 Fairfax MO 454H MIDWEST DATA CENTER, INC. - MO 524   2015-04-16   
660-771 A Maryville MO 454H MIDWEST DATA CENTER, INC. - MO 524      
660-771 0 Maryville MO 454H MIDWEST DATA CENTER, INC. - MO 524   2015-03-19   

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

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