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:

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
310-752 A Santa Monica: Santa Monica DA CA IRVECAEIDS2  7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 730      
310-752 0 Santa Monica: Santa Monica DA CA   4733 PAETEC COMMUNICATIONS, INC. - CA 730   2002-05-28   
310-752 1 Santa Monica: Santa Monica DA CA   7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 730      
310-752 2 Santa Monica: Santa Monica DA CA   7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 730      
310-752 3 Santa Monica: Santa Monica DA CA   6529 T-MOBILE USA, INC. 730   2006-06-02   
310-752 4 Santa Monica: Santa Monica DA CA   7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 730      
310-752 5 Santa Monica: Santa Monica DA CA   4733 PAETEC COMMUNICATIONS, INC. - CA 730   2006-02-24   
310-752 6 Santa Monica: Santa Monica DA CA   776C CHARTER FIBERLINK CA-CCO, LLC - CA 730   2006-05-14   
310-752 7 Santa Monica: Santa Monica DA CA   8827 BROADWING COMMUNICATIONS, LLC - CA 730   2006-04-30   
310-752 8 Santa Monica: Santa Monica DA CA   7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 730      
310-752 9 Santa Monica: Santa Monica DA CA   7240 MCI WORLDCOM COMMUNICATIONS, INC., CA 730      

Last updated: Sun, 10 Nov 2019 13:49:34 UTC

Sponsored by: VoIP Much Phone Company

Like this site? We accept donations via PayPal.