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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
603-426 5 Derry NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-426 6 Derry NH   6386 BELL ATLANTIC MOBILE, INC 122   2025-03-27   
603-426 8 Derry NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-426 9 Derry NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-427 A Portsmouth NH PTMONHISPS0  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-427 0 Portsmouth NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-427 1 Portsmouth NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-427 2 Portsmouth NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-427 3 Portsmouth NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-427 4 Portsmouth NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-427 5 Portsmouth NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-427 6 Portsmouth NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-427 7 Portsmouth NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-427 8 Portsmouth NH   318J COMCAST IP PHONE, LLC 122   2011-07-13   
603-427 9 Portsmouth NH   8468 FREEDOM RING COMMUNICATIONS, LLC 122   2010-07-09   
603-428 A Henniker NH HNKRNHXARP0  3320 MERRIMACK CO. TELEPHONE CO., DBA CONTOOCOOK VALLEY 122      
603-428 0 Henniker NH   3320 MERRIMACK CO. TELEPHONE CO., DBA CONTOOCOOK VALLEY 122      
603-428 2 Henniker NH   3320 MERRIMACK CO. TELEPHONE CO., DBA CONTOOCOOK VALLEY 122      
603-428 3 Henniker NH   3320 MERRIMACK CO. TELEPHONE CO., DBA CONTOOCOOK VALLEY 122      
603-428 4 Henniker NH   145J TERRA NOVA TELECOM INC. 122   2025-07-11   
603-428 6 Henniker NH   3320 MERRIMACK CO. TELEPHONE CO., DBA CONTOOCOOK VALLEY 122      
603-428 7 Henniker NH   3320 MERRIMACK CO. TELEPHONE CO., DBA CONTOOCOOK VALLEY 122      
603-428 8 Henniker NH   3320 MERRIMACK CO. TELEPHONE CO., DBA CONTOOCOOK VALLEY 122      
603-428 9 Henniker NH   6889 OMNIPOINT MIAMI E LICENSE, LLC 122   2021-05-30   
603-429 A Merrimack NH MRMCNHYADS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-430 A Portsmouth NH PTMONHISDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-431 A Portsmouth NH PTMONHISDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-432 A Derry NH DRRYNHEBDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-433 A Portsmouth NH PTMONHISDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-434 A Derry NH DRRYNHEBDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-435 A Pittsfield NH PTFDNHBRRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-435 0 Pittsfield NH   314C IDT AMERICA, CORP. - NH 122   2008-04-18   
603-435 1 Pittsfield NH   829J PAETEC ITEL, LLC 122   2001-11-01   
603-435 2 Pittsfield NH   996E BANDWIDTH.COM CLEC, LLC - NH 122   2002-09-19   
603-435 3 Pittsfield NH   4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122   2004-09-07   
603-435 4 Pittsfield NH   318J COMCAST IP PHONE, LLC 122   2010-01-25   
603-435 5 Pittsfield NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-435 6 Pittsfield NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-435 7 Pittsfield NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-435 8 Pittsfield NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-435 9 Pittsfield NH   5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-436 A Portsmouth NH PTMONHISDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-437 A Derry NH DRRYNHEBDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-438 A Nashua NH MNCHNHCOCM1  6889 OMNIPOINT MIAMI E LICENSE, LLC 122   2024-02-09   
603-438 0 Nashua NH   6889 OMNIPOINT MIAMI E LICENSE, LLC 122      
603-438 1 Nashua NH   6889 OMNIPOINT MIAMI E LICENSE, LLC 122      
603-438 2 Nashua NH   6889 OMNIPOINT MIAMI E LICENSE, LLC 122      
603-438 3 Nashua NH   6889 OMNIPOINT MIAMI E LICENSE, LLC 122      
603-438 4 Nashua NH   6889 OMNIPOINT MIAMI E LICENSE, LLC 122      
603-438 5 Nashua NH   6889 OMNIPOINT MIAMI E LICENSE, LLC 122      

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Last updated: Thu, 29 Jan 2026 14:35:03 UTC

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