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.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

Last updated: Sat, 25 Oct 2014 11:08:09 UTC

How to use this page

NPA: 510 [Rate centres in NPA 510] [Dial plan for NPA 510]

NXX: 981

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA Eff date Disc date Map
510-981 A Oakland: Berkeley DA CA BKLYCA01DS0 9740 PACIFIC BELL [link] 722 map
510-981 0 Oakland: Berkeley DA CA 9740 PACIFIC BELL [link] 722
510-981 1 Oakland: Berkeley DA CA 9740 PACIFIC BELL [link] 722
510-981 2 Oakland: Berkeley DA CA 9740 PACIFIC BELL [link] 722
510-981 3 Oakland: Berkeley DA CA 9740 PACIFIC BELL [link] 722
510-981 4 Oakland: Berkeley DA CA 9740 PACIFIC BELL [link] 722
510-981 5 Oakland: Berkeley DA CA 9740 PACIFIC BELL [link] 722
510-981 6 Oakland: Berkeley DA CA 9740 PACIFIC BELL [link] 722
510-981 7 Oakland: Berkeley DA CA 9740 PACIFIC BELL [link] 722
510-981 8 Oakland: Berkeley DA CA 9740 PACIFIC BELL [link] 722
510-981 9 Oakland: Berkeley DA CA 6006 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - CA [link] 722 2013-12-18



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