Local Calling Guide

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

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-878 0 Greenville NH GNVLNHADRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-878 1 Greenville NH GNVLNHADRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-878 2 Greenville NH GNVLNHADRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-878 3 Greenville NH GNVLNHADRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-878 4 Greenville NH GNVLNHADRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-878 5 Greenville NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122   2004-09-04   
603-878 6 Greenville NH GNVLNHADRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-878 7 Greenville NH   829J PAETEC ITEL, LLC 122   2003-05-05   
603-878 8 Greenville NH   145J TERRA NOVA TELECOM INC. 122   2021-05-27   
603-878 9 Greenville NH GNVLNHADRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-879 A Nashua NH NASHNHWPDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-879 0 Nashua NH   829J PAETEC ITEL, LLC 122   2005-11-01   
603-879 1 Nashua NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2023-04-20   
603-879 2 Nashua NH NASHNHWPDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-879 3 Nashua NH NASHNHWPDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-879 4 Nashua NH NASHNHWPDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-879 5 Nashua NH NASHNHWPDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-879 6 Nashua NH NASHNHWPDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-879 7 Nashua NH NASHNHWPDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-879 8 Nashua NH NASHNHWPDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-879 9 Nashua NH NASHNHWPDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-880 A Nashua NH MNCHNHCO23Z  073H TELNYX LLC 122      
603-880 0 Nashua NH NASHNHWPDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-880 1 Nashua NH NASHNHWPDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-880 2 Nashua NH MNCHNHCO23Z  073H TELNYX LLC 122   2022-05-13   
603-880 3 Nashua NH NASHNHWPDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-880 4 Nashua NH NASHNHWPDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-880 5 Nashua NH NASHNHWPDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-880 6 Nashua NH NASHNHWPDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-880 7 Nashua NH NASHNHWPDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-880 8 Nashua NH NASHNHWPDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-880 9 Nashua NH NASHNHWPDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-881 A Nashua NH NASHNHWPDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-881 0 Nashua NH NASHNHWPDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-881 1 Nashua NH NASHNHWPDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-881 2 Nashua NH NASHNHWPDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-881 3 Nashua NH NASHNHWPDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-881 4 Nashua NH NASHNHWPDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-881 5 Nashua NH NASHNHWPDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-881 6 Nashua NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2022-05-04   
603-881 7 Nashua NH NASHNHWPDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-881 8 Nashua NH NASHNHWPDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-881 9 Nashua NH NASHNHWPDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-882 A Nashua NH NASHNHWPDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-883 A Nashua NH NASHNHWPDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-884 A Nashua NH NASHNHWPDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-884 0 Nashua NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2024-10-10   
603-884 1 Nashua NH   6386 BELL ATLANTIC MOBILE, INC 122   2025-01-22   
603-884 2 Nashua NH   732J NUSO, LLC 122   2025-03-17   
603-884 3 Nashua NH NASHNHWPDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      

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Last updated: Tue, 31 Mar 2026 13:56:49 UTC

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