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: RCMDINXB0MD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
765-333 A Union City IN 7440 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IN 937      
765-373 A Richmond IN 7440 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IN 937      
937-714 A Union City OH 7443 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OH 937      

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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