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: 920 [Rate centres in NPA 920] [Dial plan for NPA 920]

NXX: 321

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
920-321 A Green Bay WI GNBYWI01ZMD  829J PAETEC ITEL, LLC 350      
920-321 0 Green Bay WI GNBYWI01ZMD  829J PAETEC ITEL, LLC 350      
920-321 1 Green Bay WI GNBYWI01ZMD  829J PAETEC ITEL, LLC 350      
920-321 2 Green Bay WI GNBYWI01ZMD  829J PAETEC ITEL, LLC 350      
920-321 3 Green Bay WI GNBYWI01ZMD  829J PAETEC ITEL, LLC 350      
920-321 4 Green Bay WI GNBYWIATUMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 350   2005-01-26   
920-321 5 Green Bay WI GNBYWI01ZMD  829J PAETEC ITEL, LLC 350      
920-321 6 Green Bay WI GNBYWIATUMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 350   2005-03-03   
920-321 7 Green Bay WI GNBYWI01ZMD  829J PAETEC ITEL, LLC 350      
920-321 8 Green Bay WI GNBYWIATUMD  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 350   2005-04-23   
920-321 9 Green Bay WI GNBYWI01ZMD  829J PAETEC ITEL, LLC 350      

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.