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.
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Switch: ROCHNYEI6MD

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
585-867 5 Rochester NY 939H COMMIO, LLC 974   2017-05-20   
585-873 2 Caledonia NY 939H COMMIO, LLC 974   2023-08-20   
585-873 3 Caledonia NY 939H COMMIO, LLC 974   2023-08-20   
585-873 4 Caledonia NY 939H COMMIO, LLC 974   2023-08-20   
585-873 5 Caledonia NY 939H COMMIO, LLC 974   2023-08-20   
585-873 7 Caledonia NY 939H COMMIO, LLC 974   2023-08-20   
585-940 4 Leicester NY 939H COMMIO, LLC 974   2023-08-20   
585-940 6 Leicester NY 939H COMMIO, LLC 974   2023-08-20   
585-940 7 Leicester NY 939H COMMIO, LLC 974   2023-08-20   
585-940 8 Leicester NY 939H COMMIO, LLC 974   2023-08-20   
585-940 9 Leicester NY 939H COMMIO, LLC 974   2023-08-20   

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Last updated: Thu, 16 Jul 2026 02:21:55 UTC

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