Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Pacific MCA5, MO

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
636-271 A PCFCMO61RS0  9533 SOUTHWESTERN BELL 520      
636-271 0   9533 SOUTHWESTERN BELL 520      
636-271 1   9533 SOUTHWESTERN BELL 520      
636-271 2   9533 SOUTHWESTERN BELL 520      
636-271 3   9533 SOUTHWESTERN BELL 520      
636-271 4   993E BANDWIDTH.COM CLEC, LLC - MO 520   2014-05-24   
636-271 5   993E BANDWIDTH.COM CLEC, LLC - MO 520   2015-09-20   
636-271 6   9533 SOUTHWESTERN BELL 520      
636-271 7   9533 SOUTHWESTERN BELL 520      
636-271 8   9533 SOUTHWESTERN BELL 520      
636-271 9   9533 SOUTHWESTERN BELL 520      

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

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