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.

OCN: 993L DAYSTARR LLC DBA DAYSTARR COMMUNICATIONS

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
231-241 A Pentwater MI   348      
231-241 0 Pentwater MI   348   2006-12-10   
616-208 A Belding MI   348      
616-208 0 Belding MI   348   2014-07-15   
810-634 A New Lothrop MI   340      
810-634 0 New Lothrop MI   340   2012-12-21   

Last updated: Sat, 21 Mar 2026 23:53:39 UTC

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