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: MILWWI12XAY

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
920-782 4 Cleveland WI 793K TWC IP ENABLED SERVICES, LLC 356   2007-05-03   
920-828 A Howards Grove WI 793K TWC IP ENABLED SERVICES, LLC 356      
920-828 0 Howards Grove WI 793K TWC IP ENABLED SERVICES, LLC 356      
920-871 A Hilbert WI 793K TWC IP ENABLED SERVICES, LLC 356      
920-871 4 Hilbert WI 793K TWC IP ENABLED SERVICES, LLC 356   2007-03-27   
920-881 A St Nazianz WI 793K TWC IP ENABLED SERVICES, LLC 356      
920-881 4 St Nazianz WI 793K TWC IP ENABLED SERVICES, LLC 356   2007-07-18   
920-953 A Valders WI 793K TWC IP ENABLED SERVICES, LLC 356      
920-953 4 Valders WI 793K TWC IP ENABLED SERVICES, LLC 356   2007-06-20   

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Last updated: Thu, 16 Jul 2026 02:21:55 UTC

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