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: 1888 GRAND RIVER MUTUAL TEL CO

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NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
660-938 A Meadville MO PRTNMOXADS0  524      
660-939 A Graham MO BTHNMOXADS0  524      
660-944 A Conception Junction MO BTHNMOXADS0  524      
660-946 A Browning MO PRTNMOXADS0  524      
660-986 A Parnell MO BTHNMOXADS0  524      

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Last updated: Tue, 31 Mar 2026 13:56:49 UTC

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