Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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OCN: 879H BARR TELL USA, INC. - DC

NPA-NXX BLOCK Rate Centre Region Switch LATA LIR Eff date Disc date
202-855 A Washington Zone 1 DC WASHDC126MD  236      
202-855 5 Washington Zone 1 DC   236   2016-08-18   

Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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