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.

Switch: MILWWI45XIX

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
920-374 4 Manitowoc WI 318J COMCAST IP PHONE, LLC 356   2015-10-09   
920-717 A Manitowoc WI 318J COMCAST IP PHONE, LLC 356      
920-717 0 Manitowoc WI 318J COMCAST IP PHONE, LLC 356   2014-04-11   
920-717 5 Manitowoc WI 318J COMCAST IP PHONE, LLC 356   2020-12-28   
920-796 7 Whitelaw WI 318J COMCAST IP PHONE, LLC 356   2015-01-23   
920-874 1 Newtonburg WI 318J COMCAST IP PHONE, LLC 356   2023-05-10   
920-953 6 Valders WI 318J COMCAST IP PHONE, LLC 356   2022-09-16   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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