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: 792K CHARTER IP ENABLED SERVICES, LLC

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
413-610 2 Ludlow MA   126   2015-05-17   
413-643 3 Gilbertville MA   126   2022-06-15   
413-655 4 Hinsdale MA   126   2016-06-15   
423-202 3 Johnson City TN   956   2005-01-23   
423-202 7 Johnson City TN   956   2006-04-19   
423-212 0 Blountville TN   956   2005-01-23   
423-212 2 Blountville TN   956   2006-12-10   
423-213 5 Elizabethton TN   956   2005-01-28   
423-217 0 Bristol TN   956   2005-01-23   
423-217 1 Bristol TN   956   2006-04-16   
423-220 5 Erwin TN   956   2025-11-16   
423-228 4 South Pittsburg TN   472   2006-09-11   
423-237 6 Newport TN   474   2005-05-23   
423-256 2 Church Hill TN   956   2005-01-23   
423-256 3 Church Hill TN   956   2006-12-10   
423-262 8 Johnson City TN   956   2007-02-19   
423-264 8 Vonore TN   474   2023-05-10   
423-268 2 Johnson City TN   956   2013-03-17   
423-271 6 Sweetwater TN   474   2012-05-31   
423-278 7 Greeneville TN   956   2025-11-16   
423-281 A Butler TN BUVLTNAX0MD  956      
423-281 1 Butler TN   956   2011-12-16   
423-285 5 Dayton TN   472   2006-06-03   
423-293 0 Rogersville TN   474   2005-05-23   
423-293 3 Rogersville TN   474   2008-02-20   
423-297 1 Elizabethton TN   956   2006-11-10   
423-328 9 Johnson City TN   956   2014-05-12   
423-343 9 Kingsport TN   956   2008-04-18   
423-349 8 Sullivan Gardens TN   956   2005-01-23   
423-353 4 Morristown TN   474   2013-03-08   
423-382 4 Sneedville TN   474   2025-11-16   
423-390 1 Kingsport TN   956   2014-02-11   
423-391 7 Bluff City TN   956   2005-01-23   
423-391 8 Bluff City TN   956   2011-10-23   
423-393 A Bulls Gap TN MRTWTN281MD  474   2025-01-23   
423-393 1 Bulls Gap TN   474   2005-05-23   
423-398 5 Kingsport TN   956   2011-09-10   
423-401 5 Soddy Daisy TN   472   2025-12-26   
423-406 1 Midway (Sullivan) TN   956   2008-05-18   
423-423 A Limestone TN   956   2026-01-11   
423-423 1 Limestone TN   956   2026-01-11   
423-428 9 Dayton TN   472   2008-03-08   
423-446 5 Fall Branch TN   956   2017-07-08   
423-454 0 Decatur TN   472   2006-06-03   
423-458 1 Cleveland TN   472   2012-08-27   
423-458 4 Cleveland TN   472   2013-09-20   
423-460 1 Mountain City TN   956   2011-09-01   
423-460 3 Mountain City TN   956   2014-09-13   
423-461 0 Johnson City TN   956   2016-09-10   
423-473 3 Cleveland TN   472   2015-05-03   

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Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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