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: 266

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
920-266 A Fond du Lac WI FDULWI01DS0  9327 WISCONSIN BELL INC 356      
920-266 0 Fond du Lac WI FDULWI01DS0  9327 WISCONSIN BELL INC 356      
920-266 1 Fond du Lac WI MILXWIJIGT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 356   2023-06-04   
920-266 2 Fond du Lac WI PEWTWICI4MD  5562 METROPCS, INC. 356   2011-09-15   
920-266 3 Fond du Lac WI MILXWIJIGT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 356   2006-04-07   
920-266 4 Fond du Lac WI MILXWIILDS0  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 356   2007-02-07   
920-266 5 Fond du Lac WI MILXWIJIGT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 356   2007-03-04   
920-266 6 Fond du Lac WI MILXWIJIGT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 356   2006-08-24   
920-266 7 Fond du Lac WI MILXWIJIGT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 356   2008-01-28   
920-266 8 Fond du Lac WI MILWWIHEWMD  516C AT&T CORP. 356   2006-06-30   
920-266 9 Fond du Lac WI MILWWI12XWX  007F BANDWIDTH.COM CLEC, LLC - WI 356   2008-11-22   

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

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.