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: JHCYTNXCX9Y

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
423-501 A Mountain City TN 081J SKYBEST COMMUNICATIONS, INC. - TN 956      
423-501 1 Mountain City TN 081J SKYBEST COMMUNICATIONS, INC. - TN 956   2017-12-24   
423-576 3 Elizabethton TN 081J SKYBEST COMMUNICATIONS, INC. - TN 956   2024-08-25   
423-678 6 Roan Mountain TN 081J SKYBEST COMMUNICATIONS, INC. - TN 956   2024-08-25   
423-692 A Butler TN 081J SKYBEST COMMUNICATIONS, INC. - TN 956      
423-692 1 Butler TN 081J SKYBEST COMMUNICATIONS, INC. - TN 956   2021-10-23   
423-873 4 Stoney Creek TN 081J SKYBEST COMMUNICATIONS, INC. - TN 956   2024-08-25   
423-896 4 Hampton TN 081J SKYBEST COMMUNICATIONS, INC. - TN 956   2024-08-25   

Last updated: Sat, 05 Apr 2025 03:03:23 UTC

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