Local Calling Guide

Area code/prefix search

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NPA: 603 [Rate centres in NPA 603] [Dial plan for NPA 603]

NXX: 788

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-788 A Lancaster NH LNCSNHHIRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-788 2 Lancaster NH LNCSNHHIRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-788 3 Lancaster NH LNCSNHHIRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-788 4 Lancaster NH LNCSNHHIRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-788 5 Lancaster NH LNCSNHHIRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-788 6 Lancaster NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2024-10-01   
603-788 7 Lancaster NH   5562 METROPCS, INC. 122   2025-04-11   
603-788 8 Lancaster NH MNCHNHCO42Z  793K TWC IP ENABLED SERVICES, LLC 122   2012-10-02   
603-788 9 Lancaster NH LNCSNHHIRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122   2014-06-20   

Last updated: Sun, 01 Jun 2025 02:18:11 UTC

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