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: OXFRWIXADS2

NPA-NXX BLOCK Rate Centre Region OCN LATA LIR Eff date Disc date
608-584 A Brooks WI 0908 MARQUETTE-ADAMS TEL. COOP., INC. 354      
608-586 A Oxford WI 0908 MARQUETTE-ADAMS TEL. COOP., INC. 354      
608-587 A Endeavor WI 0908 MARQUETTE-ADAMS TEL. COOP., INC. 354      
608-589 A Packwaukee WI 0908 MARQUETTE-ADAMS TEL. COOP., INC. 354      

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

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