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: 821

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
920-821 A Beaver Dam WI MILXWI142MD  7767 OVATION COMMUNICATIONS OF WISCONSIN, INC. 356      
920-821 0 Beaver Dam WI MILXWI142MD  7767 OVATION COMMUNICATIONS OF WISCONSIN, INC. 356      
920-821 1 Beaver Dam WI MILWWIAUDS1  225C ONVOY, LLC - WI 356   2015-05-10   
920-821 2 Beaver Dam WI MILXWI142MD  7767 OVATION COMMUNICATIONS OF WISCONSIN, INC. 356      
920-821 3 Beaver Dam WI MILXWIJIGT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 356   2015-05-28   
920-821 4 Beaver Dam WI MILXWI142MD  7767 OVATION COMMUNICATIONS OF WISCONSIN, INC. 356      
920-821 5 Beaver Dam WI MILXWI142MD  7767 OVATION COMMUNICATIONS OF WISCONSIN, INC. 356      
920-821 6 Beaver Dam WI MILXWIJIGT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 356   2015-05-28   
920-821 7 Beaver Dam WI MILXWIJIGT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 356   2018-03-17   
920-821 8 Beaver Dam WI MILXWIJIGT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 356   2018-02-01   
920-821 9 Beaver Dam WI MILXWI142MD  7767 OVATION COMMUNICATIONS OF WISCONSIN, INC. 356      

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.