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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
603-400 1 Hollis NH MNCHNHCO43Z  792K CHARTER IP ENABLED SERVICES, LLC 122   2011-10-15   
603-400 2 Hollis NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2013-11-04   
603-400 3 Hollis NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2017-04-29   
603-400 4 Hollis NH MNCHNHCOCM1  6889 OMNIPOINT MIAMI E LICENSE, LLC 122   2017-02-27   
603-400 5 Hollis NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2016-10-01   
603-400 6 Hollis NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2016-07-09   
603-400 7 Hollis NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2016-03-26   
603-400 8 Hollis NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2015-09-22   
603-400 9 Hollis NH DRRYNHBC1MD  4036 NEW CINGULAR WIRELESS PCS, LLC - DC 122   2014-11-11   
603-401 A Salem NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-401 0 Salem NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-401 1 Salem NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-401 2 Salem NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2003-07-05   
603-401 3 Salem NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2003-11-19   
603-401 4 Salem NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-401 5 Salem NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2004-11-04   
603-401 6 Salem NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2006-07-03   
603-401 7 Salem NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-401 8 Salem NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-401 9 Salem NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-402 A Nashua NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-402 0 Nashua NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2013-06-30   
603-402 1 Nashua NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2013-01-06   
603-402 2 Nashua NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2014-04-12   
603-402 3 Nashua NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2013-05-12   
603-402 4 Nashua NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2015-04-15   
603-402 5 Nashua NH MNCHNHCOX1Y  8299 TELEPORT COMMUNICATIONS AMERICA, LLC - NH 122   2013-04-22   
603-402 6 Nashua NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2016-02-03   
603-402 7 Nashua NH MNCHNHCO45Z  829J PAETEC ITEL, LLC 122   2013-06-19   
603-402 8 Nashua NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2017-08-14   
603-402 9 Nashua NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2013-09-19   
603-403 A Rochester NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122      
603-403 0 Rochester NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2019-09-20   
603-403 1 Rochester NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2018-09-14   
603-403 2 Rochester NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2020-11-19   
603-403 3 Rochester NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2022-05-20   
603-403 4 Rochester NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2019-11-19   
603-403 5 Rochester NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2021-08-02   
603-403 6 Rochester NH DOVRNHTHXEX  8299 TELEPORT COMMUNICATIONS AMERICA, LLC - NH 122   2019-05-16   
603-403 7 Rochester NH MNCHNHBODS0  927H PEERLESS NETWORK OF NEW HAMPSHIRE, LLC - NH 122   2021-07-16   
603-403 8 Rochester NH ROCHNHWE4MD  314C IDT AMERICA, CORP. - NH 122   2019-05-13   
603-403 9 Rochester NH MNCHNHBODS0  927H PEERLESS NETWORK OF NEW HAMPSHIRE, LLC - NH 122   2021-03-03   
603-404 A Derry NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122      
603-404 0 Derry NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2016-03-04   
603-404 1 Derry NH MNCHNHCOCM1  6889 OMNIPOINT MIAMI E LICENSE, LLC 122   2016-12-10   
603-404 2 Derry NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2016-06-15   
603-404 3 Derry NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2017-11-16   
603-404 4 Derry NH MNCHNHACAMD  6386 BELL ATLANTIC MOBILE, INC 122   2017-07-07   
603-404 5 Derry NH MNCHNHCOX9Z  637E ONVOY, LLC - NH 122   2021-04-23   
603-404 6 Derry NH MNCHNHIE6MD  318J COMCAST IP PHONE, LLC 122   2018-10-26   

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

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