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, 15 Aug 2014 01:34:43 UTC

How to use this page

NPA: 423 [Rate centres in NPA 423] [Dial plan for NPA 423]

NXX: 646

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA Eff date Disc date Map
423-646 A Bristol TN JHCYTNDD2MD 8645 SUNCOM DBA T-MOBILE USA [link] 956 map
423-646 0 Bristol TN 8645 SUNCOM DBA T-MOBILE USA [link] 956 2009-04-13
423-646 1 Bristol TN 8645 SUNCOM DBA T-MOBILE USA [link] 956
423-646 2 Bristol TN 8645 SUNCOM DBA T-MOBILE USA [link] 956
423-646 3 Bristol TN 8645 SUNCOM DBA T-MOBILE USA [link] 956
423-646 4 Bristol TN 8645 SUNCOM DBA T-MOBILE USA [link] 956
423-646 5 Bristol TN 8645 SUNCOM DBA T-MOBILE USA [link] 956
423-646 6 Bristol TN 8645 SUNCOM DBA T-MOBILE USA [link] 956
423-646 7 Bristol TN 8645 SUNCOM DBA T-MOBILE USA [link] 956
423-646 8 Bristol TN 8645 SUNCOM DBA T-MOBILE USA [link] 956
423-646 9 Bristol TN 8645 SUNCOM DBA T-MOBILE USA [link] 956



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