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: 573 [Rate centres in NPA 573] [Dial plan for NPA 573]

NXX:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
573-955 A Bismarck MO STLSMO09X2X  516C AT&T CORP. 520   2010-01-25   
573-955 0 Bismarck MO   093F ONVOY, LLC MO 520   2016-09-26   
573-955 1 Bismarck MO   093F ONVOY, LLC MO 520   2016-09-26   
573-955 5 Bismarck MO   965H FRACTEL, LLC 520   2020-01-11   
573-955 7 Bismarck MO   516C AT&T CORP. 520   2010-01-25   
573-955 8 Bismarck MO   093F ONVOY, LLC MO 520   2019-05-07   
573-955 9 Bismarck MO   093F ONVOY, LLC MO 520   2019-05-07   

Last updated: Thu, 10 Sep 2020 02:15:24 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.