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: JHCYTNXCPS0

Remotes:

Switch Switch name Switch type
ERWNTNXARS0  ERWIN  RSC 
JNBOTNXARP0  JONESBOROUGH  RP 
MDWYTNXARS2  MIDWAY (SULLIVAN)  RSC 

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
423-232 A Johnson City TN 4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-233 A Johnson City TN 6880 PRO PAGE PARTNERS, LLC 956      
423-262 A Johnson City TN 4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-262 0 Johnson City TN 4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-262 1 Johnson City TN 4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-262 2 Johnson City TN 4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-262 4 Johnson City TN 4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-262 5 Johnson City TN 4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-282 A Johnson City TN 4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-283 A Johnson City TN 4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-302 1 Johnson City TN 4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956   2010-02-08   
423-302 2 Johnson City TN 4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956   2010-02-08   
423-302 3 Johnson City TN 4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956   2010-02-08   
423-302 4 Johnson City TN 4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956   2010-02-08   
423-302 5 Johnson City TN 4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956   2010-02-08   
423-302 6 Johnson City TN 4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956   2010-02-08   
423-410 A Johnson City TN 4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-431 A Johnson City TN 4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-431 0 Johnson City TN 4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-431 1 Johnson City TN 4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-431 2 Johnson City TN 4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-431 3 Johnson City TN 4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-431 4 Johnson City TN 4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-431 5 Johnson City TN 4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-431 6 Johnson City TN 4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-431 7 Johnson City TN 4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-433 A Johnson City TN 4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-433 0 Johnson City TN 4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-433 1 Johnson City TN 4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-433 2 Johnson City TN 4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-433 3 Johnson City TN 4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-433 4 Johnson City TN 4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-433 5 Johnson City TN 4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-433 6 Johnson City TN 4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-434 A Johnson City TN 4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-439 A Johnson City TN 4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-439 0 Johnson City TN 4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-439 1 Johnson City TN 4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-439 2 Johnson City TN 4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-439 3 Johnson City TN 4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-439 4 Johnson City TN 4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-439 5 Johnson City TN 4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-439 6 Johnson City TN 4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-439 7 Johnson City TN 4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-439 8 Johnson City TN 4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-461 A Johnson City TN 4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-461 1 Johnson City TN 4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-461 2 Johnson City TN 4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-461 3 Johnson City TN 4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      
423-461 4 Johnson City TN 4510 UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN 956      

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Last updated: Sat, 10 Oct 2026 15:24:20 UTC

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