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: 983 [Rate centres in NPA 983] [Dial plan for NPA 983]

NXX: 219

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
983-219 A Denver CO   700J WAVENATION, LLC 656   2025-08-28   
983-219 0 Denver CO   700J WAVENATION, LLC 656   2025-08-28   
983-219 1 Denver CO   6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2025-12-10   
983-219 2 Denver CO   6010 NEW CINGULAR WIRELESS PCS, LLC 656   2025-10-24   
983-219 3 Denver CO   6010 NEW CINGULAR WIRELESS PCS, LLC 656   2025-10-24   
983-219 4 Denver CO   6010 NEW CINGULAR WIRELESS PCS, LLC 656   2025-10-24   
983-219 5 Denver CO   490J DISH WIRELESS, LLC 656   2025-09-05   
983-219 6 Denver CO   490J DISH WIRELESS, LLC 656   2025-10-13   
983-219 7 Denver CO   490J DISH WIRELESS, LLC 656   2025-11-17   
983-219 8 Denver CO   490J DISH WIRELESS, LLC 656   2025-12-10   
983-219 9 Denver CO   6567 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CO 656   2025-12-20   

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.