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: TRCYMIMNWMD

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
231-212 A Interlochen MI 508J CENTURYLINK COMMUNICATIONS, LLC 348      
231-221 A Harbor Springs MI 508J CENTURYLINK COMMUNICATIONS, LLC 348      
231-244 A Boyne City MI 508J CENTURYLINK COMMUNICATIONS, LLC 348      
231-422 A Pellston MI 508J CENTURYLINK COMMUNICATIONS, LLC 348      
269-230 A Schoolcraft MI 508J CENTURYLINK COMMUNICATIONS, LLC 348      
269-525 A Wayland MI 508J CENTURYLINK COMMUNICATIONS, LLC 348      
269-528 A Three Rivers MI 508J CENTURYLINK COMMUNICATIONS, LLC 348      
616-352 A Grand Rapids MI 508J CENTURYLINK COMMUNICATIONS, LLC 348      
616-382 A Grand Rapids MI 508J CENTURYLINK COMMUNICATIONS, LLC 348      
616-428 A Grand Rapids MI 508J CENTURYLINK COMMUNICATIONS, LLC 348      
616-441 A Lake Odessa MI 508J CENTURYLINK COMMUNICATIONS, LLC 348      

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

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