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: 805 [Rate centres in NPA 805] [Dial plan for NPA 805]

NXX: 540

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
805-540 A San Luis Obispo CA SNLOCA014MD  9262 UTILITY TELECOM GROUP, LLC - CA 740      
805-540 0 San Luis Obispo CA SNLOCA01XEY  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 740   2006-01-07   
805-540 1 San Luis Obispo CA SNLOCA01XEY  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 740   2007-06-07   
805-540 2 San Luis Obispo CA SNLOCA014MD  9262 UTILITY TELECOM GROUP, LLC - CA 740   2011-07-11   
805-540 3 San Luis Obispo CA SNLOCA014MD  9262 UTILITY TELECOM GROUP, LLC - CA 740   2007-07-26   
805-540 4 San Luis Obispo CA SNLOCA01XEY  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 740   2006-01-07   
805-540 5 San Luis Obispo CA SNLOCA014MD  9262 UTILITY TELECOM GROUP, LLC - CA 740   2005-04-02   
805-540 6 San Luis Obispo CA SNLOCA014MD  9262 UTILITY TELECOM GROUP, LLC - CA 740   2009-04-15   
805-540 7 San Luis Obispo CA SNLOCA014MD  9262 UTILITY TELECOM GROUP, LLC - CA 740   2008-05-12   
805-540 8 San Luis Obispo CA SNLOCA01XEY  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 740   2006-08-10   
805-540 9 San Luis Obispo CA SNLOCA01XEY  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 740   2006-08-10   

Last updated: Fri, 22 Mar 2024 03:02:44 UTC

Sponsored by: ISP Telecom

Like this site? We accept donations via PayPal.