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

Block: A

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NPA-NXX BLOCK Rate Centre Region Switch OCN LATA LIR Eff date Disc date
603-404 A Derry NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-405 A Somersworth NH DOVRNHTHXEX  8299 TELEPORT COMMUNICATIONS AMERICA, LLC - NH 122      
603-406 A Concord NH MNCHNHCOCM1  6889 OMNIPOINT MIAMI E LICENSE, LLC 122      
603-407 A Belmont NH   829J PAETEC ITEL, LLC 122   2025-04-30   
603-408 A Berlin NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-409 A Laconia NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-410 A Concord NH   829J PAETEC ITEL, LLC 122   2025-04-30   
603-412 A Plymouth NH MNCHNHCOX4Z  6290 UNITED STATES CELLULAR - NH 122      
603-413 A Manchester NH   829J PAETEC ITEL, LLC 122   2025-04-30   
603-414 A Sunapee NH CNTCNHXARP0  853H TDS METROCOM, LLC - NH 122      
603-415 A Concord NH PTMONH073MD  8468 FREEDOM RING COMMUNICATIONS, LLC 122      
603-416 A Raymond NH MNCHNHCOCM1  6889 OMNIPOINT MIAMI E LICENSE, LLC 122      
603-417 A Nashua NH MNCHNHCOCM1  6889 OMNIPOINT MIAMI E LICENSE, LLC 122      
603-418 A Exeter NH   829J PAETEC ITEL, LLC 122   2025-04-30   
603-419 A Suncook NH MNCHNHCOX4Z  6290 UNITED STATES CELLULAR - NH 122      
603-420 A Merrimack NH MNCHNHACDS0  7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 122      
603-421 A Derry NH DRRYNHEBDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-422 A Portsmouth NH PTMONHISDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-423 A Merrimack NH MRMCNHYADS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-424 A Merrimack NH MRMCNHYADS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-425 A Derry NH DRRYNHEBDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-426 A Derry NH DRRYNHEBDS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-427 A Portsmouth NH PTMONHISPS0  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-428 A Henniker NH HNKRNHXARP0  3320 MERRIMACK CO. TELEPHONE CO., DBA CONTOOCOOK VALLEY 122      
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      
603-436 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   
603-439 A Keene NH   829J PAETEC ITEL, LLC 122   2025-04-30   
603-440 A Merrimack NH MRMCNHYADS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-441 A Rochester NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122      
603-442 A Lebanon NH LBNNNHBARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-443 A Lebanon NH LBNNNHBARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-444 A Littleton NH LTTNNHPLDS0  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-445 A North Walpole NH BLFLVTHERS2  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-446 A Marlow NH MRLWNHYARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-447 A Conway NH CNWYNHYARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-448 A Lebanon NH LBNNNHBARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-449 A Milan NH MILNNHPLRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-450 A Concord NH MNCHNHCOCM1  6889 OMNIPOINT MIAMI E LICENSE, LLC 122      
603-451 A Concord NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-452 A Conway NH PTMONH073MD  8468 FREEDOM RING COMMUNICATIONS, LLC 122      
603-453 A Hampstead NH MNCHNHCO37Z  7421 AT&T - LOCAL 122      
603-454 A Sunapee NH MNCHNHCOX4Z  6290 UNITED STATES CELLULAR - NH 122      

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

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