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.

Pulaski, WI

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
920-503 A APPLWI01XWX  623D TIME WARNER CABLE INFORMATION SVCS (WISCONSIN) WI 350      
920-503 0   623D TIME WARNER CABLE INFORMATION SVCS (WISCONSIN) WI 350   2009-09-14   
920-503 1   939H COMMIO, LLC 350   2021-07-24   
920-503 2   520K TDS METROCOM, LLC 350   2022-12-19   
920-503 3   766H INTEGRATED PATH COMMUNICATIONS, LLC - WI 350   2018-07-13   
920-503 4   5489 LEVEL 3 COMMUNICATIONS, LLC - WI 350   2022-04-29   
920-503 6   7216 TELEPORT COMMUNICATIONS AMERICA, LLC WI 350   2021-12-01   
920-503 7   145J TERRA NOVA TELECOM INC. 350   2025-07-20   
920-503 8   939H COMMIO, LLC 350   2021-07-24   
920-822 A PLSKWIXARS0  0938 NORTHEAST TEL. CO. 350      
920-822 0   0938 NORTHEAST TEL. CO. 350      
920-822 1   0938 NORTHEAST TEL. CO. 350      
920-822 2   0938 NORTHEAST TEL. CO. 350      
920-822 3   0938 NORTHEAST TEL. CO. 350      
920-822 4   0938 NORTHEAST TEL. CO. 350      
920-822 5   0938 NORTHEAST TEL. CO. 350      
920-822 6   0938 NORTHEAST TEL. CO. 350      
920-822 7   0938 NORTHEAST TEL. CO. 350      
920-822 8   0938 NORTHEAST TEL. CO. 350      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.