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.

Milwaukee Zone 4, WI

<< 1 2 3 4 5 6 7 >>

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
414-381 A PEWTWICI7MD  6529 T-MOBILE USA, INC. 356      
414-381 0 MILWWI12XWX  007F BANDWIDTH.COM CLEC, LLC - WI 356   2022-11-17   
414-381 1 MILWWI12XWX  007F BANDWIDTH.COM CLEC, LLC - WI 356   2022-11-17   
414-381 2 MILWWIAUDS1  225C ONVOY, LLC - WI 356   2023-03-06   
414-381 3 MILWWIAUDS1  225C ONVOY, LLC - WI 356   2023-07-30   
414-381 4 MILWWIAUDS1  225C ONVOY, LLC - WI 356   2023-06-26   
414-381 5 PEWTWICI7MD  6529 T-MOBILE USA, INC. 356   2023-09-06   
414-381 6 PEWTWICI7MD  6529 T-MOBILE USA, INC. 356   2023-09-06   
414-381 7 MILWWIAUDS1  225C ONVOY, LLC - WI 356   2024-05-05   
414-381 8 MILWWI12XWX  007F BANDWIDTH.COM CLEC, LLC - WI 356   2022-11-17   
414-381 9 PEWTWICI7MD  6529 T-MOBILE USA, INC. 356   2022-10-30   
414-392 A MILWWIAUDS1  225C ONVOY, LLC - WI 356   2024-06-01   
414-392 0 MILWWIAUDS1  225C ONVOY, LLC - WI 356   2024-06-01   
414-392 1 MILWWIAUDS1  225C ONVOY, LLC - WI 356   2024-07-18   
414-392 2 MILWWIAU11Z  490J BOOST SUBSCRIBERCO L.L.C. 356   2024-08-29   
414-392 3   225C ONVOY, LLC - WI 356   2025-09-27   
414-392 4   225C ONVOY, LLC - WI 356   2025-10-26   
414-392 5 MILWWI12XWX  007F BANDWIDTH.COM CLEC, LLC - WI 356   2024-09-15   
414-392 6 MILWWI12XWX  007F BANDWIDTH.COM CLEC, LLC - WI 356   2024-09-15   
414-392 7 MILWWI12XWX  007F BANDWIDTH.COM CLEC, LLC - WI 356   2024-09-15   
414-392 8 MILWWIAUDS1  225C ONVOY, LLC - WI 356   2024-12-14   
414-392 9   225C ONVOY, LLC - WI 356   2025-03-01   
414-410 A WALLWIFIDS0  7216 TELEPORT COMMUNICATIONS AMERICA, LLC WI 356      
414-410 0 WALLWIFIDS0  7216 TELEPORT COMMUNICATIONS AMERICA, LLC WI 356      
414-410 1 WALLWIFIDS0  7216 TELEPORT COMMUNICATIONS AMERICA, LLC WI 356      
414-410 2 WALLWIFIDS0  7216 TELEPORT COMMUNICATIONS AMERICA, LLC WI 356      
414-410 3 WALLWIFIDS0  7216 TELEPORT COMMUNICATIONS AMERICA, LLC WI 356      
414-410 4 WALLWIFIDS0  7216 TELEPORT COMMUNICATIONS AMERICA, LLC WI 356      
414-410 5 WALLWIFIDS0  7216 TELEPORT COMMUNICATIONS AMERICA, LLC WI 356      
414-410 6 WALLWIFIDS0  7216 TELEPORT COMMUNICATIONS AMERICA, LLC WI 356      
414-410 7 WALLWIFIDS0  7216 TELEPORT COMMUNICATIONS AMERICA, LLC WI 356      
414-410 8 WALLWIFIDS0  7216 TELEPORT COMMUNICATIONS AMERICA, LLC WI 356      
414-410 9 MILWWI12XWX  007F BANDWIDTH.COM CLEC, LLC - WI 356   2015-03-12   
414-420 A MILWWIAUDS1  225C ONVOY, LLC - WI 356      
414-420 0 MILWWIAUDS2  227F PEERLESS NETWORK OF WISCONSIN, LLC - WI 356   2019-12-31   
414-420 1 MILWWIAUDS1  225C ONVOY, LLC - WI 356   2020-03-02   
414-420 2 MILWWIAUDS1  225C ONVOY, LLC - WI 356   2019-12-10   
414-420 3 MILWWIAUDS1  225C ONVOY, LLC - WI 356   2019-12-10   
414-420 4 MILWWIAUDS1  225C ONVOY, LLC - WI 356   2019-12-10   
414-420 5 MILWWIAUDS1  225C ONVOY, LLC - WI 356   2019-12-10   
414-420 6 MILWWIDK6MD  5489 LEVEL 3 COMMUNICATIONS, LLC - WI 356   2019-10-05   
414-420 7 MILWWIAUDS1  225C ONVOY, LLC - WI 356   2019-05-04   
414-420 8 MILWWIAUDS1  225C ONVOY, LLC - WI 356   2019-05-04   
414-420 9 MILWWIAUDS1  225C ONVOY, LLC - WI 356   2020-03-02   
414-434 A MILWWI12X8Y  829J PAETEC ITEL, LLC 356      
414-434 0 MILWWI12X8Y  829J PAETEC ITEL, LLC 356      
414-434 1 MILWWI12X8Y  829J PAETEC ITEL, LLC 356      
414-434 2 MILWWI12X8Y  829J PAETEC ITEL, LLC 356      
414-434 3 MILWWI12X8Y  829J PAETEC ITEL, LLC 356      
414-434 4 MILWWI12X8Y  829J PAETEC ITEL, LLC 356      

<< 1 2 3 4 5 6 7 >>

Last updated: Thu, 05 Feb 2026 23:41:55 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.