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.

Columbia, MO

<< 1 2 3 4 5 6 7 8 9 10

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
573-988 2 JFCYMOXAXZX  5814 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MO 521   2024-10-01   
573-988 3 CLMBMOHRAMD  732J NUSO, LLC 521   2024-10-24   
573-988 4 CLMAMOXAXCX  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 521   2024-11-01   
573-988 5 CLMAMOXAXCX  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 521   2024-12-05   
573-988 6 CLMAMOXAXIX  093F ONVOY, LLC - MO 521   2024-09-14   
573-988 7 CLMAMOXAXIX  093F ONVOY, LLC - MO 521   2024-09-14   
573-988 8 CLMAMOXAXCX  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 521   2024-08-26   
573-988 9 CLMAMOXAXIX  093F ONVOY, LLC - MO 521   2024-09-14   
573-999 A CLMAMOXAXCX  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 521      

<< 1 2 3 4 5 6 7 8 9 10

Last updated: Tue, 31 Mar 2026 13:56:49 UTC

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.