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: 551

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
573-551 A Kennett MO STLSMOWQDS2  093F ONVOY, LLC - MO 520      
573-551 0 Kennett MO STLSMOWQDS2  093F ONVOY, LLC - MO 520   2016-09-28   
573-551 1 Kennett MO STLVMOOH3MD  5562 METROPCS, INC. 520   2021-05-08   
573-551 2 Kennett MO STLSMOWQCMD  515J IP HORIZON LLC 520   2023-12-30   
573-551 3 Kennett MO STLVMOOH2MD  6529 T-MOBILE USA, INC. 520   2021-09-06   
573-551 4 Kennett MO STLSMOWQCMD  515J IP HORIZON LLC 520   2023-12-30   
573-551 5 Kennett MO   145J TERRA NOVA TELECOM INC. 520   2024-05-10   
573-551 6 Kennett MO STLSMOWQDS2  093F ONVOY, LLC - MO 520   2021-07-24   
573-551 7 Kennett MO STLVMOOH2MD  6529 T-MOBILE USA, INC. 520   2021-03-10   
573-551 8 Kennett MO STLSMOGZ6MD  073H TELNYX LLC 520   2017-06-13   
573-551 9 Kennett MO STLVMOOH2MD  6529 T-MOBILE USA, INC. 520   2016-12-20   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.