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.

OCN: 8645 SUNCOM DBA T-MOBILE USA

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
336-970 8 Winston-Salem NC   424   2015-07-03   
336-989 9 High Point NC   424   2016-05-16   
423-270 3 Erwin TN   956   2015-12-25   
423-292 A Fall Branch TN JHCYTNDD2MD  956      
423-328 4 Johnson City TN   956   2009-03-26   
423-330 2 Erwin TN   956   2003-10-25   
423-330 3 Erwin TN   956   2003-10-25   
423-330 5 Erwin TN   956   2003-10-25   
423-340 7 Bristol TN   956   2017-07-21   
423-340 9 Bristol TN   956   2017-07-21   
423-383 A Bristol TN JHCYTNDD2MD  956      
423-384 A Fall Branch TN JHCYTNDD2MD  956      
423-557 A Johnson City TN JHCYTNDD2MD  956   2004-11-26   
423-557 0 Johnson City TN   956   2006-02-27   
423-557 9 Johnson City TN   956   2004-11-26   
423-646 A Bristol TN JHCYTNDD2MD  956      
423-646 0 Bristol TN   956   2009-04-13   
423-646 1 Bristol TN   956      
423-646 2 Bristol TN   956      
423-646 3 Bristol TN   956      
423-646 4 Bristol TN   956      
423-646 5 Bristol TN   956      
423-646 6 Bristol TN   956      
423-646 7 Bristol TN   956      
423-646 8 Bristol TN   956      
423-646 9 Bristol TN   956      
423-647 A Butler TN JHCYTNDD2MD  956      
423-647 0 Butler TN   956   2009-10-02   
423-647 1 Butler TN   956      
423-647 2 Butler TN   956      
423-647 3 Butler TN   956      
423-647 4 Butler TN   956      
423-647 5 Butler TN   956      
423-647 6 Butler TN   956      
423-647 7 Butler TN   956      
423-647 8 Butler TN   956      
423-647 9 Butler TN   956      
423-676 A Johnson City TN JHCYTNDD2MD  956      
423-676 0 Johnson City TN   956   2009-03-26   
423-676 1 Johnson City TN   956      
423-676 2 Johnson City TN   956      
423-676 3 Johnson City TN   956      
423-676 4 Johnson City TN   956      
423-676 5 Johnson City TN   956      
423-676 6 Johnson City TN   956      
423-676 7 Johnson City TN   956      
423-676 8 Johnson City TN   956      
423-676 9 Johnson City TN   956      
423-677 A Fall Branch TN JHCYTNDD2MD  956      
423-677 0 Fall Branch TN   956      

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Last updated: Sat, 11 Jul 2020 20:37:26 UTC

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