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.

NPA: 920 [Rate centres in NPA 920] [Dial plan for NPA 920]

NXX: 732

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
920-732 A Whitelaw WI WHLWWIXARS0  0886 FRONTIER NORTH INC. - WI 356      
920-732 1 Whitelaw WI WHLWWIXARS0  0886 FRONTIER NORTH INC. - WI 356      
920-732 2 Whitelaw WI MILWWIAUDS1  225C ONVOY, LLC - WI 356   2021-07-02   
920-732 3 Whitelaw WI WHLWWIXARS0  0886 FRONTIER NORTH INC. - WI 356      
920-732 4 Whitelaw WI WHLWWIXARS0  0886 FRONTIER NORTH INC. - WI 356      
920-732 5 Whitelaw WI MILWWIAUXZZ  965H FRACTEL, LLC 356   2020-03-19   
920-732 6 Whitelaw WI MILWWI12XWX  007F BANDWIDTH.COM CLEC, LLC - WI 356   2008-11-22   
920-732 7 Whitelaw WI MILWWI45XBX  508J CENTURYLINK COMMUNICATIONS, LLC 356   2015-01-05   
920-732 8 Whitelaw WI PLMOWIXAEMD  624H ONVOY SPECTRUM, LLC 356   2021-06-27   

Last updated: Sun, 27 Apr 2025 12:48:38 UTC

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.