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.
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Switch: MILBWI120MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
414-260 A Milwaukee Zone 1 WI 478J NUSO, LLC 356      
414-260 1 Milwaukee Zone 1 WI 478J NUSO, LLC 356   2020-07-20   
414-361 5 Milwaukee Zone 1 WI 478J NUSO, LLC 356   2024-04-27   
414-401 0 Milwaukee Zone 1 WI 478J NUSO, LLC 356   2024-09-08   
414-401 1 Milwaukee Zone 1 WI 478J NUSO, LLC 356   2024-09-08   
414-401 2 Milwaukee Zone 1 WI 478J NUSO, LLC 356   2024-09-08   

Last updated: Sun, 26 Jan 2025 15:59:20 UTC

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