Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 660 [Rate centres in NPA 660] [Dial plan for NPA 660]

NXX: 457

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
660-457 A Lancaster MO LNCSMOGLRS0  9533 SOUTHWESTERN BELL 524      
660-457 1 Lancaster MO LNCSMOGLRS0  9533 SOUTHWESTERN BELL 524      
660-457 2 Lancaster MO LNCSMOGLRS0  9533 SOUTHWESTERN BELL 524      
660-457 3 Lancaster MO LNCSMOGLRS0  9533 SOUTHWESTERN BELL 524      
660-457 7 Lancaster MO   114J EXIANT COMMUNICATIONS LLC 524   2026-09-03   

Last updated: Tue, 01 Sep 2026 00:40:05 UTC

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