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: FRSNCACE0MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
559-557 0 Visalia CA 6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 728   2020-12-07   
559-557 1 Visalia CA 6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 728   2020-12-07   
559-557 2 Visalia CA 6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 728   2020-12-07   
559-557 3 Visalia CA 6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 728   2020-12-07   
559-831 1 Madera CA 6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 728   2015-06-04   

Last updated: Sun, 28 Feb 2021 19:06:05 UTC

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