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: RONKVALKXLY

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
540-204 A Roanoke VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 244      
540-235 A Pearisburg VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 244      
540-329 A Glasgow VA 7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 244      

Last updated: Tue, 13 Jan 2026 21:50:02 UTC

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