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: 310 [Rate centres in NPA 310] [Dial plan for NPA 310]

NXX: 765

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
310-765 A El Segundo CA IRVECAEIDS2  7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 730      
310-765 0 El Segundo CA CYCMCALLCM5  6010 NEW CINGULAR WIRELESS PCS, LLC 730   2006-08-16   
310-765 1 El Segundo CA IRVECAEIDS2  7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 730      
310-765 2 El Segundo CA IRVECAEIDS2  7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 730      
310-765 3 El Segundo CA IRVECAEIDS2  7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 730      
310-765 4 El Segundo CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730   2001-03-09   
310-765 5 El Segundo CA IRVECAEIDS2  7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 730      
310-765 6 El Segundo CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730   2006-08-31   
310-765 7 El Segundo CA LSANCARCD3S  649C ONVOY, LLC - CA 730   2005-09-28   
310-765 8 El Segundo CA LSANCARC80Z  9262 UTILITY TELECOM GROUP, LLC - CA 730   2006-07-06   
310-765 9 El Segundo CA IRVECAEIDS2  7240 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - CA 730      

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

Sponsored by: LES.NET

Like this site? We accept donations via PayPal.