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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
603-310 1 Bedford NH MNCHNHCO23Z  073H TELNYX LLC 122   2022-10-27   
603-310 2 Bedford NH MNCHNHCOX1Y  8299 TELEPORT COMMUNICATIONS AMERICA, LLC - NH 122   2002-11-15   
603-310 3 Bedford NH   829J PAETEC ITEL, LLC 122   2007-05-04   
603-310 4 Bedford NH   829J PAETEC ITEL, LLC 122   2002-09-10   
603-310 5 Bedford NH   829J PAETEC ITEL, LLC 122   2015-03-03   
603-310 6 Bedford NH MNCHNHACDS0  7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 122   2020-03-24   
603-310 7 Bedford NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2015-01-12   
603-310 8 Bedford NH MNCHNHAC3MD  939H COMMIO, LLC 122   2022-11-05   
603-310 9 Bedford NH   829J PAETEC ITEL, LLC 122   2001-01-05   
603-312 A Dover NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-313 A Keene NH MNCHNHCOX4Z  6290 UNITED STATES CELLULAR - NH 122      
603-313 0 Keene NH   6290 UNITED STATES CELLULAR - NH 122      
603-313 1 Keene NH   6290 UNITED STATES CELLULAR - NH 122      
603-313 2 Keene NH   6290 UNITED STATES CELLULAR - NH 122      
603-313 3 Keene NH   6290 UNITED STATES CELLULAR - NH 122      
603-313 4 Keene NH   6290 UNITED STATES CELLULAR - NH 122      
603-313 5 Keene NH   6290 UNITED STATES CELLULAR - NH 122      
603-313 6 Keene NH   6290 UNITED STATES CELLULAR - NH 122      
603-313 7 Keene NH   6290 UNITED STATES CELLULAR - NH 122      
603-313 8 Keene NH   6290 UNITED STATES CELLULAR - NH 122      
603-313 9 Keene NH   6290 UNITED STATES CELLULAR - NH 122      
603-314 A Manchester NH   829J PAETEC ITEL, LLC 122   2025-04-30   
603-314 0 Manchester NH   829J PAETEC ITEL, LLC 122      
603-314 1 Manchester NH   829J PAETEC ITEL, LLC 122      
603-314 2 Manchester NH   829J PAETEC ITEL, LLC 122      
603-314 3 Manchester NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2020-03-04   
603-314 4 Manchester NH   829J PAETEC ITEL, LLC 122      
603-314 5 Manchester NH   829J PAETEC ITEL, LLC 122      
603-314 6 Manchester NH   829J PAETEC ITEL, LLC 122      
603-314 7 Manchester NH   829J PAETEC ITEL, LLC 122      
603-314 8 Manchester NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2020-04-02   
603-315 A Manchester NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-316 A Milford NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-316 0 Milford NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2017-11-30   
603-316 1 Milford NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2018-01-04   
603-316 2 Milford NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2021-08-02   
603-316 3 Milford NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2021-05-07   
603-316 4 Milford NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2018-10-05   
603-316 5 Milford NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2022-01-15   
603-316 6 Milford NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2021-08-02   
603-316 7 Milford NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2020-12-25   
603-316 8 Milford NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2019-05-18   
603-316 9 Milford NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2021-08-24   
603-317 A Milan NH MNCHNHACDS0  7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 122      
603-317 1 Milan NH MNCHNHCO42Z  793K TWC IP ENABLED SERVICES, LLC 122   2024-01-01   
603-317 4 Milan NH PTMONH073MD  9827 OTEL TELEKOM, INC. - NH 122   2002-09-19   
603-317 5 Milan NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122   2005-09-15   
603-317 8 Milan NH   5562 METROPCS, INC. 122   2025-12-05   
603-317 9 Milan NH MNCHNHACDS0  7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 122      
603-318 A Nashua NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-318 0 Nashua NH PTMONH073MD  9827 OTEL TELEKOM, INC. - NH 122      
603-318 1 Nashua NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2004-04-07   
603-318 2 Nashua NH MNCHNHCOXCZ  996E BANDWIDTH.COM CLEC, LLC - NH 122      
603-318 3 Nashua NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122      
603-318 4 Nashua NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2014-05-01   
603-318 5 Nashua NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2004-04-07   
603-318 6 Nashua NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2004-08-02   
603-318 7 Nashua NH   829J PAETEC ITEL, LLC 122   2004-11-09   
603-318 8 Nashua NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2006-02-03   
603-318 9 Nashua NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2006-02-25   
603-319 A Portsmouth NH   829J PAETEC ITEL, LLC 122   2025-04-30   
603-319 0 Portsmouth NH   829J PAETEC ITEL, LLC 122      
603-319 1 Portsmouth NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122   2005-04-23   
603-319 2 Portsmouth NH   829J PAETEC ITEL, LLC 122      
603-319 3 Portsmouth NH   829J PAETEC ITEL, LLC 122      
603-319 4 Portsmouth NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122   2005-04-23   
603-319 5 Portsmouth NH MNCHNHCOXCZ  996E BANDWIDTH.COM CLEC, LLC - NH 122   2006-06-22   
603-319 6 Portsmouth NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2013-10-03   
603-319 7 Portsmouth NH MNCHNHCOCM1  6889 OMNIPOINT MIAMI E LICENSE, LLC 122   2011-03-02   
603-319 8 Portsmouth NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2008-01-22   
603-320 A Nashua NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-320 0 Nashua NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-320 1 Nashua NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-320 2 Nashua NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-320 3 Nashua NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-320 4 Nashua NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-320 5 Nashua NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-320 6 Nashua NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-320 7 Nashua NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-320 8 Nashua NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-320 9 Nashua NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2007-10-22   
603-321 A Nashua NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-322 A West Lebanon NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-322 0 West Lebanon NH MNCHNHCOCM1  6889 OMNIPOINT MIAMI E LICENSE, LLC 122   2022-06-16   
603-322 1 West Lebanon NH MNCHNHCOCM1  6889 OMNIPOINT MIAMI E LICENSE, LLC 122   2021-05-30   
603-322 3 West Lebanon NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122      
603-322 5 West Lebanon NH   145J TERRA NOVA TELECOM INC. 122   2023-04-25   
603-322 8 West Lebanon NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2017-01-14   
603-323 A Tamworth NH TMWONHWHRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-323 0 Tamworth NH MNCHNHCOX8Z  4017 LEVEL 3 COMMUNICATIONS, LLC - NH 122   2005-09-12   
603-323 2 Tamworth NH TMWONHWHRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-323 4 Tamworth NH   145J TERRA NOVA TELECOM INC. 122   2021-05-28   
603-323 5 Tamworth NH   145J TERRA NOVA TELECOM INC. 122   2023-04-27   
603-323 6 Tamworth NH MNCHNHCO42Z  793K TWC IP ENABLED SERVICES, LLC 122   2012-10-02   
603-323 7 Tamworth NH TMWONHWHRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-323 8 Tamworth NH TMWONHWHRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-323 9 Tamworth NH TMWONHWHRS1  5113 CONSOLIDATED COMM OF NO. NEW ENGLAND-NH 122      
603-324 A Nashua NH MNCHNHCO40Z  7229 MCIMETRO ACCESS TRANSMISSION SERVICES LLC 122      
603-324 0 Nashua NH MNCHNHACDS0  7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 122      
603-324 1 Nashua NH MNCHNHACDS0  7778 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - NH 122      

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

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