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: 559 [Rate centres in NPA 559] [Dial plan for NPA 559]

NXX: 524

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
559-524 A Sanger CA SNGRCAXFPMD  321J HD CARRIER LLC 728      
559-524 0 Sanger CA FRSMCA150MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 728      
559-524 1 Sanger CA SNGRCAXFWMD  649C ONVOY, LLC - CA 728      
559-524 2 Sanger CA FRSMCA150MD  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 728      
559-524 3 Sanger CA SNGRCAXF87A  4420 FRONTIER CALIFORNIA INC. 728      
559-524 4 Sanger CA SNGRCAXFWMD  649C ONVOY, LLC - CA 728      
559-524 5 Sanger CA FRSNCA01DS5  373F PEERLESS NETWORK OF CALIFORNIA, LLC - CA 728      
559-524 6 Sanger CA SNGRCAXF87A  4420 FRONTIER CALIFORNIA INC. 728      
559-524 7 Sanger CA SNGRCAXF87A  4420 FRONTIER CALIFORNIA INC. 728      
559-524 8 Sanger CA SNGRCAXFWMD  649C ONVOY, LLC - CA 728      
559-524 9 Sanger CA SNGRCAXFPMD  321J HD CARRIER LLC 728      

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

Sponsored by: FiberConX Communications Ltd.

Like this site? We accept donations via PayPal.