Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 310 [Rate centres in NPA 310] [Dial plan for NPA 310]

NXX:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
310-321 A El Segundo CA POMNCAAADS0  8322 MPOWER COMMUNICATIONS CORP - CA 730      
310-321 0 El Segundo CA   8322 MPOWER COMMUNICATIONS CORP - CA 730      
310-321 1 El Segundo CA   8322 MPOWER COMMUNICATIONS CORP - CA 730      
310-321 2 El Segundo CA   6529 T-MOBILE USA, INC. 730   2007-05-02   
310-321 3 El Segundo CA   7453 U.S. TELEPACIFIC CORP. - CA 730      
310-321 4 El Segundo CA   8826 LEVEL 3 COMMUNICATIONS, LLC - CA 730   2011-04-07   
310-321 5 El Segundo CA   7453 U.S. TELEPACIFIC CORP. - CA 730   2000-04-14   
310-321 6 El Segundo CA   7453 U.S. TELEPACIFIC CORP. - CA 730   2000-04-14   
310-321 7 El Segundo CA   8322 MPOWER COMMUNICATIONS CORP - CA 730   2003-04-11   
310-321 8 El Segundo CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2011-12-04   
310-321 9 El Segundo CA   6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA 730   2018-10-16   

Last updated: Sat, 27 Jul 2019 10:59:49 UTC

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