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: DNPHMO011MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
573-202 5 Rolla MO 6275 UNITED STATES CELLULAR - MO 520   2006-12-31   
573-466 5 Rolla MO 6275 UNITED STATES CELLULAR - MO 520   2021-12-15   
573-466 8 Rolla MO 6275 UNITED STATES CELLULAR - MO 520   2014-03-07   
573-466 9 Rolla MO 6275 UNITED STATES CELLULAR - MO 520   2009-03-28   
573-537 5 Rolla MO 6275 UNITED STATES CELLULAR - MO 520   2022-12-12   
573-889 0 Licking MO 6275 UNITED STATES CELLULAR - MO 520   2019-02-19   
573-889 1 Licking MO 6275 UNITED STATES CELLULAR - MO 520   2022-07-11   

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.