Local Calling Guide

Area code/prefix search

Search by area code/prefix (NPA/NXX) or OCN

  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
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Last updated: Fri, 17 May 2013 01:26:12 UTC

How to use this page

NPA: 213 [Rate centres in NPA 213] [Dial plan for NPA 213]

NXX: 531

NPA-NXX-X Rate Centre Region Switch OCN LATA Eff date Disc date Map
213-531 Los Angeles: DA 10 CA IRVECAEIDS0 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA [link] 730 map
213-531-0 Los Angeles: DA 10 CA 7240 MCI WORLDCOM COMMUNICATIONS, INC., CA [link] 730 map
213-531-1 Los Angeles: DA 10 CA 899D METROPCS NETWORKS, LLC [link] 730 2011-01-16
213-531-2 Los Angeles: DA 10 CA 293G MOSAIC NETWORX LLC - CA [link] 730 2011-12-10
213-531-3 Los Angeles: DA 10 CA 7262 XO CALIFORNIA, INC. [link] 730 2005-06-04
213-531-4 Los Angeles: DA 10 CA 7262 XO CALIFORNIA, INC. [link] 730 2005-06-04
213-531-5 Los Angeles: DA 10 CA 293G MOSAIC NETWORX LLC - CA [link] 730 2011-12-10
213-531-6 Los Angeles: DA 10 CA 899D METROPCS NETWORKS, LLC [link] 730 2008-05-05
213-531-7 Los Angeles: DA 10 CA 6529 T-MOBILE USA, INC. [link] 730 2007-09-08
213-531-8 Los Angeles: DA 10 CA 7262 XO CALIFORNIA, INC. [link] 730 2005-06-04
213-531-9 Los Angeles: DA 10 CA 899D METROPCS NETWORKS, LLC [link] 730 2009-01-16


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