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: 906

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
310-906 A El Segundo CA LSANCARCD9S  4129 O1 COMMUNICATIONS, INC. - CA 730      
310-906 0 El Segundo CA LSANCA039MD  981E BANDWIDTH.COM CLEC, LLC - CA 730   2009-08-17   
310-906 1 El Segundo CA LSANCARCD9S  4129 O1 COMMUNICATIONS, INC. - CA 730      
310-906 2 El Segundo CA LSANCARCD9S  4129 O1 COMMUNICATIONS, INC. - CA 730      
310-906 3 El Segundo CA LSANCAGJDS4  7453 U.S. TELEPACIFIC CORP. - CA 730   2009-09-11   
310-906 4 El Segundo CA LSANCA54DS7  8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730   2013-01-07   
310-906 5 El Segundo CA TRNECAGBGT3  6529 T-MOBILE USA, INC. 730   2007-01-25   
310-906 6 El Segundo CA BLTNCAADGMD  6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2004-11-12   
310-906 7 El Segundo CA TRNECAGBGT3  6529 T-MOBILE USA, INC. 730   2007-01-25   
310-906 8 El Segundo CA TRNECAGBGT3  6529 T-MOBILE USA, INC. 730   2007-01-25   
310-906 9 El Segundo CA TRNECAGBGT3  6529 T-MOBILE USA, INC. 730   2007-01-25   

Last updated: Sun, 07 Feb 2021 01:52:50 UTC

Sponsored by: Callcentric - VoIP Internet phone service

Like this site? We accept donations via PayPal.