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: 205M LTE WIRELESS INC.

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
274-300 A Green Bay WI   350   2026-08-14   
274-300 0 Green Bay WI   350   2026-08-14   
274-300 1 Green Bay WI   350   2026-08-14   
274-300 2 Green Bay WI   350   2026-08-14   
274-300 3 Green Bay WI   350   2026-08-14   
274-300 4 Green Bay WI   350   2026-08-14   
274-300 5 Green Bay WI   350   2026-08-14   
274-300 6 Green Bay WI   350   2026-08-14   
274-300 7 Green Bay WI   350   2026-08-14   
274-300 8 Green Bay WI   350   2026-08-14   
274-300 9 Green Bay WI   350   2026-08-14   

Last updated: Fri, 10 Jul 2026 02:55:48 UTC

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