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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
603-474 1 Seabrook NH SBRKNHNRDS0  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-474 2 Seabrook NH SBRKNHNRDS0  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-474 3 Seabrook NH SBRKNHNRDS0  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-474 4 Seabrook NH MNCHNHCO45Z  829J PAETEC ITEL, LLC 122   2001-04-20   
603-474 5 Seabrook NH SBRKNHNRDS0  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-474 6 Seabrook NH SBRKNHNRDS0  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-474 7 Seabrook NH SBRKNHNRDS0  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-474 8 Seabrook NH SBRKNHNRDS0  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-474 9 Seabrook NH SBRKNHNRDS0  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-475 A Salem NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-476 A Center Sandwich NH MLBONHYARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-476 2 Center Sandwich NH MLBONHYARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-476 3 Center Sandwich NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122   2004-09-04   
603-476 4 Center Sandwich NH MNCHNHCO47Z  829J PAETEC ITEL, LLC 122   2016-07-20   
603-476 5 Center Sandwich NH MLBONHYARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-476 7 Center Sandwich NH MNCHNHCO42Z  793K TWC IP ENABLED SERVICES, LLC 122   2012-10-02   
603-476 8 Center Sandwich NH MLBONHYARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-477 A Claremont NH MNCHNHCOX4Z  6290 UNITED STATES CELLULAR - NH 122      
603-477 0 Claremont NH MNCHNHCOX4Z  6290 UNITED STATES CELLULAR - NH 122      
603-477 1 Claremont NH MNCHNHCOX4Z  6290 UNITED STATES CELLULAR - NH 122      
603-477 2 Claremont NH MNCHNHCOX4Z  6290 UNITED STATES CELLULAR - NH 122      
603-477 3 Claremont NH MNCHNHCOX4Z  6290 UNITED STATES CELLULAR - NH 122      
603-477 4 Claremont NH MNCHNHCOX4Z  6290 UNITED STATES CELLULAR - NH 122      
603-477 5 Claremont NH MNCHNHCOX4Z  6290 UNITED STATES CELLULAR - NH 122      
603-477 6 Claremont NH MNCHNHCOX4Z  6290 UNITED STATES CELLULAR - NH 122      
603-477 7 Claremont NH MNCHNHCOX4Z  6290 UNITED STATES CELLULAR - NH 122      
603-477 8 Claremont NH MNCHNHCOX4Z  6290 UNITED STATES CELLULAR - NH 122      
603-477 9 Claremont NH MNCHNHCOX4Z  6290 UNITED STATES CELLULAR - NH 122      
603-478 A Hillsboro Upper Village NH WEARNHXADS1  0039 GRANITE STATE TEL., INC. 122      
603-479 A Derry NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-480 A Manchester NH MNCHNHCOXCZ  996E BANDWIDTH.COM CLEC, LLC - NH 122      
603-481 A Plymouth NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-481 0 Plymouth NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-481 1 Plymouth NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-481 2 Plymouth NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-481 3 Plymouth NH   145J TERRA NOVA TELECOM INC. 122   2021-12-12   
603-481 5 Plymouth NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2025-09-06   
603-481 6 Plymouth NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-481 7 Plymouth NH MNCHNHCO45Z  829J PAETEC ITEL, LLC 122   2005-08-18   
603-481 8 Plymouth NH MNCHNHCO45Z  829J PAETEC ITEL, LLC 122   2005-08-18   
603-482 A Errol NH ERRLNHYARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-482 3 Errol NH ERRLNHYARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-482 6 Errol NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122   2004-09-04   
603-482 7 Errol NH   145J TERRA NOVA TELECOM INC. 122   2022-07-01   
603-482 9 Errol NH ERRLNHYARS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122   2014-06-20   
603-483 A Candia NH CANDNHDERS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-483 0 Candia NH CANDNHDERS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-483 1 Candia NH CANDNHDERS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-483 2 Candia NH CANDNHDERS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-483 3 Candia NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122   2004-09-03   

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Last updated: Tue, 01 Sep 2026 00:40:05 UTC

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