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: 128L E. RITTER COMMUNICATIONS, LLC

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
270-654 A Owensboro KY   464   2026-02-19   
270-654 1 Owensboro KY   464   2026-02-19   
318-454 A Shreveport LA   486   2026-02-13   
318-454 1 Shreveport LA   486   2026-02-13   
417-584 A Springfield MO   522   2026-02-19   
417-584 1 Springfield MO   522   2026-02-19   
430-392 A Texarkana TX   554   2026-02-19   
430-392 1 Texarkana TX   554   2026-02-19   
479-592 A Fort Smith AR   526   2026-02-05   
479-592 1 Fort Smith AR   526   2026-02-05   
501-587 A Little Rock AR   528   2026-02-05   
501-587 1 Little Rock AR   528   2026-02-05   
557-248 A St Louis MO   520   2026-02-19   
557-248 1 St Louis MO   520   2026-02-19   
572-279 A Oklahoma City OK   536   2026-02-19   
572-279 1 Oklahoma City OK   536   2026-02-19   
629-338 A Nashville TN   470   2026-02-16   
629-338 1 Nashville TN   470   2026-02-16   
870-960 A Pine Bluff AR   530   2026-02-05   
870-960 1 Pine Bluff AR   530   2026-02-05   
901-773 A Memphis TN   468   2026-02-13   
901-773 1 Memphis TN   468   2026-02-13   
972-328 A Dallas TX   552   2026-02-19   
972-328 1 Dallas TX   552   2026-02-19   

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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