Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
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Washington, NH

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
603-495 A WEARNHXADS1  0039 GRANITE STATE TEL., INC. 122      
603-710 A DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-710 0 DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2023-07-02   
603-710 7 DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2025-10-15   
603-710 8 DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2021-04-16   
603-710 9 DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2021-04-16   

Last updated: Thu, 16 Jul 2026 02:21:55 UTC

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