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: 537

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
573-537 A Rolla MO ROLLMOXACMD  6529 T-MOBILE USA, INC. 520      
573-537 0 Rolla MO   6529 T-MOBILE USA, INC. 520   2022-01-09   
573-537 1 Rolla MO   6529 T-MOBILE USA, INC. 520   2022-01-09   
573-537 2 Rolla MO   6529 T-MOBILE USA, INC. 520   2022-01-09   
573-537 3 Rolla MO   6529 T-MOBILE USA, INC. 520   2022-01-09   
573-537 4 Rolla MO   6529 T-MOBILE USA, INC. 520   2022-01-09   
573-537 5 Rolla MO   6275 UNITED STATES CELLULAR - MO 520   2022-12-12   
573-537 6 Rolla MO   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520   2024-12-26   
573-537 7 Rolla MO   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520   2024-12-26   
573-537 8 Rolla MO   6534 NEW CINGULAR WIRELESS PCS, LLC - IL 520   2024-12-26   
573-537 9 Rolla MO   939H COMMIO, LLC 520   2023-05-26   

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.