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: ROCHMNROXBY

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
507-979 A Rochester MN 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 620   2024-07-02   
507-979 9 Rochester MN 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 620   2024-07-02   

Last updated: Thu, 20 Nov 2025 13:34:34 UTC

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