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 OWBOKYMAX3Y  464   2026-02-19   
270-654 1 Owensboro KY OWBOKYMAX3Y  464   2026-02-19   
318-454 A Shreveport LA SHPTLAMA38Z  486   2026-02-13   
318-454 1 Shreveport LA SHPTLAMA38Z  486   2026-02-13   
417-584 A Springfield MO SPFDMOTLX2Z  522   2026-02-19   
417-584 1 Springfield MO SPFDMOTLX2Z  522   2026-02-19   
430-392 A Texarkana TX LGVWTXPLXPY  554   2026-02-19   
430-392 1 Texarkana TX LGVWTXPLXPY  554   2026-02-19   
479-592 A Fort Smith AR FTSMARSUX5Y  526   2026-02-05   
479-592 1 Fort Smith AR FTSMARSUX5Y  526   2026-02-05   
501-587 A Little Rock AR LTRKARFR11Z  528   2026-02-05   
501-587 1 Little Rock AR LTRKARFR11Z  528   2026-02-05   
557-248 A St Louis MO STLSMO05X1Y  520   2026-02-19   
557-248 1 St Louis MO STLSMO05X1Y  520   2026-02-19   
572-279 A Oklahoma City OK OKCYOKCE38Z  536   2026-02-19   
572-279 1 Oklahoma City OK OKCYOKCE38Z  536   2026-02-19   
629-338 A Nashville TN NSVLTNWM4MD  470   2026-02-16   
629-338 1 Nashville TN NSVLTNWM4MD  470   2026-02-16   
870-960 A Pine Bluff AR PNBLARJEX2Z  530   2026-02-05   
870-960 1 Pine Bluff AR PNBLARJEX2Z  530   2026-02-05   
901-773 A Memphis TN MMPHTNMAYLY  468   2026-02-13   
901-773 1 Memphis TN MMPHTNMAYLY  468   2026-02-13   
972-328 A Dallas TX DLLSTXRIXUZ  552   2026-02-19   
972-328 1 Dallas TX DLLSTXRIXUZ  552   2026-02-19   

Last updated: Sat, 01 Aug 2026 03:19:33 UTC

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