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: Fri, 17 May 2013 01:26:12 UTC

How to use this page

NPA: 530 [Rate centres in NPA 530] [Dial plan for NPA 530]

NXX: 550

NPA-NXX-X Rate Centre Region Switch OCN LATA Eff date Disc date Map
530-550 Truckee CA TRUCCA11DS0 9740 PACIFIC BELL [link] 726 map
530-550-0 Truckee CA 9740 PACIFIC BELL [link] 726 map
530-550-1 Truckee CA 9740 PACIFIC BELL [link] 726
530-550-2 Truckee CA 9740 PACIFIC BELL [link] 726
530-550-3 Truckee CA 9740 PACIFIC BELL [link] 726
530-550-4 Truckee CA 9262 UTILITY TELEPHONE, INC. - CA [link] 726 2005-04-26
530-550-5 Truckee CA 9740 PACIFIC BELL [link] 726
530-550-6 Truckee CA 9740 PACIFIC BELL [link] 726 2008-07-01
530-550-7 Truckee CA 9740 PACIFIC BELL [link] 726
530-550-8 Truckee CA 9740 PACIFIC BELL [link] 726
530-550-9 Truckee CA 9740 PACIFIC BELL [link] 726


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