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: 557

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
920-557 A Beaver Dam WI MILWWIHEVMD  7216 TELEPORT COMMUNICATIONS AMERICA, LLC WI 356      
920-557 0 Beaver Dam WI MILWWI12XWX  007F BANDWIDTH.COM CLEC, LLC - WI 356      
920-557 1 Beaver Dam WI MILXWIJIGT0  6534 NEW CINGULAR WIRELESS PCS, LLC - IL 356      
920-557 2 Beaver Dam WI MILWWIAUDS1  225C ONVOY, LLC - WI 356      
920-557 3 Beaver Dam WI MILWWIAUDS1  225C ONVOY, LLC - WI 356      
920-557 4 Beaver Dam WI MILWWIAUDS2  227F PEERLESS NETWORK OF WISCONSIN, LLC - WI 356      
920-557 6 Beaver Dam WI MILWWIHEVMD  7216 TELEPORT COMMUNICATIONS AMERICA, LLC WI 356      
920-557 7 Beaver Dam WI MILWWIAUDS1  225C ONVOY, LLC - WI 356      
920-557 8 Beaver Dam WI MILWWIAUDS1  225C ONVOY, LLC - WI 356      
920-557 9 Beaver Dam WI MILWWI12XWX  007F BANDWIDTH.COM CLEC, LLC - WI 356      

Last updated: Wed, 20 Nov 2024 21:20:06 UTC

Sponsored by: VoIP.ms

Like this site? We accept donations via PayPal.