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.

Switch: JHCYTNXCXYX

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
423-890 6 Bristol TN 6214 NEW CINGULAR WIRELESS PCS, LLC - GA 956   2023-11-05   
423-890 7 Bristol TN 6214 NEW CINGULAR WIRELESS PCS, LLC - GA 956   2023-11-05   
423-890 8 Bristol TN 6214 NEW CINGULAR WIRELESS PCS, LLC - GA 956   2023-11-05   
423-890 9 Bristol TN 6214 NEW CINGULAR WIRELESS PCS, LLC - GA 956   2023-11-05   
423-900 4 Johnson City TN 6214 NEW CINGULAR WIRELESS PCS, LLC - GA 956   2020-04-04   
423-900 5 Johnson City TN 6214 NEW CINGULAR WIRELESS PCS, LLC - GA 956   2020-04-04   
423-900 6 Johnson City TN 6214 NEW CINGULAR WIRELESS PCS, LLC - GA 956   2020-04-04   
423-900 9 Johnson City TN 6214 NEW CINGULAR WIRELESS PCS, LLC - GA 956   2020-04-04   
423-905 0 Johnson City TN 6214 NEW CINGULAR WIRELESS PCS, LLC - GA 956   2021-09-05   
423-905 1 Johnson City TN 6214 NEW CINGULAR WIRELESS PCS, LLC - GA 956   2021-09-05   
423-905 2 Johnson City TN 6214 NEW CINGULAR WIRELESS PCS, LLC - GA 956   2021-09-05   
423-905 3 Johnson City TN 6214 NEW CINGULAR WIRELESS PCS, LLC - GA 956   2021-09-05   
423-905 4 Johnson City TN 6214 NEW CINGULAR WIRELESS PCS, LLC - GA 956   2021-09-05   
423-905 5 Johnson City TN 6214 NEW CINGULAR WIRELESS PCS, LLC - GA 956   2021-09-05   
423-905 6 Johnson City TN 6214 NEW CINGULAR WIRELESS PCS, LLC - GA 956   2021-09-05   
423-905 7 Johnson City TN 6214 NEW CINGULAR WIRELESS PCS, LLC - GA 956   2021-09-05   
423-905 8 Johnson City TN 6214 NEW CINGULAR WIRELESS PCS, LLC - GA 956   2021-09-05   
423-952 9 Johnson City TN 6214 NEW CINGULAR WIRELESS PCS, LLC - GA 956   2020-04-04   
423-979 9 Johnson City TN 6214 NEW CINGULAR WIRELESS PCS, LLC - GA 956   2021-09-05   

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Last updated: Tue, 16 Jun 2026 00:09:45 UTC

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