Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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NPA: 202 [Rate centres in NPA 202] [Dial plan for NPA 202]

NXX: 901

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
202-901 A Washington Zone 1 DC WASHDCDP8MD  9748 AMERICAN MESSAGING SERVICES, LLC 236      

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

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