Local Calling Guide

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

NXX: 337

NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-337 A Rochester NH ROCHNHHIPS0  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-337 0 Rochester NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-337 1 Rochester NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-337 2 Rochester NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-337 3 Rochester NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-337 4 Rochester NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-337 5 Rochester NH   4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2009-01-05   
603-337 8 Rochester NH   6889 OMNIPOINT MIAMI E LICENSE, LLC 122   2026-01-22   
603-337 9 Rochester NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      

Last updated: Thu, 01 Jan 2026 03:59:49 UTC

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