Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Brock, MO

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
660-328 A GNCYMOXADS0  1931 NORTHEAST MISSOURI RURAL TEL. CO. 524      
660-328 0 GNCYMOXADS0  1931 NORTHEAST MISSOURI RURAL TEL. CO. 524      
660-328 6 GNCYMOXADS0  1931 NORTHEAST MISSOURI RURAL TEL. CO. 524      
660-328 7 GNCYMOXADS0  1931 NORTHEAST MISSOURI RURAL TEL. CO. 524      
660-328 9 GNCYMOXADS0  1931 NORTHEAST MISSOURI RURAL TEL. CO. 524      

Last updated: Sat, 10 Oct 2026 15:24:20 UTC

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