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.

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NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
248-677 A Royal Oak MI 770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 340      
248-687 A Troy MI 770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 340      
248-732 A Pontiac MI 770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 340      
313-324 A Detroit Zone 1 MI 770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 340      
313-429 A Detroit Zone 6 MI 770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 340      
586-430 A Richmond MI 770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 340      
586-738 A Mount Clemens MI 770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 340      
586-879 A Roseville MI 770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 340      
586-884 A Utica MI 770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 340      
734-780 A Ann Arbor MI 770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 340      
734-781 A Plymouth MI 770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 340      
810-269 A Sandusky MI 770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 340      
810-525 A Emmett MI 770E TELEPORT COMMUNICATIONS AMERICA, LLC - MI 340      

Last updated: Sun, 10 Nov 2019 13:49:34 UTC

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