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.

Johnson Creek, WI

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
920-220 A   5562 METROPCS, INC. 356      
920-220 0 PEWTWICI4MD  5562 METROPCS, INC. 356      
920-220 1 PEWTWICI4MD  5562 METROPCS, INC. 356      
920-220 9   5562 METROPCS, INC. 356      
920-409 A MILWWI45XBX  508J CENTURYLINK COMMUNICATIONS, LLC 356      
920-409 0   6529 T-MOBILE USA, INC. 356   2024-03-21   
920-409 1   6529 T-MOBILE USA, INC. 356   2024-03-21   
920-409 2 MILWWIAUDS1  225C ONVOY, LLC - WI 356   2021-04-08   
920-409 3 MILWWI12XTX  624H ONVOY SPECTRUM, LLC 356   2021-06-25   
920-409 4 MILWWIAUDS1  225C ONVOY, LLC - WI 356   2020-01-06   
920-409 5 MILWWIAUDS1  225C ONVOY, LLC - WI 356   2021-07-26   
920-409 6 MILWWIHEVMD  7216 TELEPORT COMMUNICATIONS AMERICA, LLC WI 356   2019-06-28   
920-409 7 MILWWI45XBX  508J CENTURYLINK COMMUNICATIONS, LLC 356   2017-12-03   
920-409 8 MILWWIDK6MD  5489 LEVEL 3 COMMUNICATIONS, LLC - WI 356   2022-05-26   
920-409 9   6529 T-MOBILE USA, INC. 356   2024-03-21   
920-699 A JHCKWIXAPS0  0943 RIVERSIDE TELCOM, INC. 356      
920-699 0 JHCKWIXAPS0  0943 RIVERSIDE TELCOM, INC. 356      
920-699 1 JHCKWIXAPS0  0943 RIVERSIDE TELCOM, INC. 356      
920-699 2 JHCKWIXAPS0  0943 RIVERSIDE TELCOM, INC. 356      
920-699 3 JHCKWIXAPS0  0943 RIVERSIDE TELCOM, INC. 356      
920-699 4 JHCKWIXAPS0  0943 RIVERSIDE TELCOM, INC. 356      
920-699 5 JHCKWIXAPS0  0943 RIVERSIDE TELCOM, INC. 356      
920-699 6 JHCKWIXAPS0  0943 RIVERSIDE TELCOM, INC. 356      
920-699 7 JHCKWIXAPS0  0943 RIVERSIDE TELCOM, INC. 356      
920-699 8 JHCKWIXAPS0  0943 RIVERSIDE TELCOM, INC. 356      
920-699 9 FDULWIGN0MD  3839 CHARTER FIBERLINK, LLC - WI 356   2008-04-26   

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.