Local Calling Guide

Area code/prefix search

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

NXX: 503

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-503 A Lancaster NH MNCHNHACDS0  7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 122      
603-503 0 Lancaster NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2022-10-14   
603-503 3 Lancaster NH MNCHNHAC7MD  145J TERRA NOVA TELECOM INC. 122   2023-11-16   
603-503 4 Lancaster NH   145J TERRA NOVA TELECOM INC. 122   2021-05-27   
603-503 5 Lancaster NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2018-11-05   
603-503 9 Lancaster NH MNCHNHACDS0  7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 122      

Last updated: Tue, 16 Apr 2024 01:38:01 UTC

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