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Area Codes > 603 > Central Office Codes

Exchange Rate Center State Operating Company
603-508 PELHAM NH BELL ATLANTIC NYNEX MOBILE
603-509 ROCHESTER NH CTC COMMUNICATIONS - NH
603-511 NH
603-512 MANCHESTER NH SPRINT SPECTRUM L.P. - NH
603-513 CONCORD NH RNK, INC.
603-514 LANCASTER NH GLOBAL NAPS, INC. - NH
603-515 WOLFEBORO NH VERIZON NEW ENGLAND INC.
603-516 DOVER NH FREEDOM RING COMMUNICATIONS, LLC
603-517 MERRIMACK NH VERIZON NEW ENGLAND INC.
603-518 MANCHESTER NH AT&T LOCAL
603-520 LACONIA NH BELL ATLANTIC NYNEX MOBILE
603-521 NASHUA NH AT&T LOCAL
603-522 SANBORNVL NH VERIZON NEW ENGLAND INC.
603-523 CANAAN NH VERIZON NEW ENGLAND INC.
603-524 LACONIA NH VERIZON NEW ENGLAND INC.
603-525 HANCOCK NH VERIZON NEW ENGLAND INC.
603-526 NEW LONDON NH KEARSARGE TELEPHONE CO.
603-527 LACONIA NH VERIZON NEW ENGLAND INC.
603-528 LACONIA NH VERIZON NEW ENGLAND INC.
603-529 WEARE NH GRANITE STATE TELEPHONE, INC.
603-530 BRISTOL NH RURAL CELLULAR CORPORATION
603-531 PORTSMOUTH NH NEW CINGULAR WIRELESS PCS, LLC - MA
603-532 JAFFREY NH VERIZON NEW ENGLAND INC.
603-533 MERRIMACK NH UNITED STATES CELLULAR CORP. - NEW HAMPSHIRE
603-534 DOVER NH RURAL CELLULAR CORPORATION
603-535 PLYMOUTH NH PAETEC COMMUNICATIONS, INC. - NH
603-536 PLYMOUTH NH VERIZON NEW ENGLAND INC.
603-537 DERRY NH VERIZON NEW ENGLAND INC.
603-538 PITTSBURG NH VERIZON NEW ENGLAND INC.
603-539 CTROSSIPEE NH VERIZON NEW ENGLAND INC.
603-540 MANCHESTER NH BELL ATLANTIC NYNEX MOBILE
603-541 MANCHESTER NH VERIZON NEW ENGLAND INC.
603-542 CLAREMONT NH VERIZON NEW ENGLAND INC.
603-543 CLAREMONT NH VERIZON NEW ENGLAND INC.
603-544 MELVIN VLG NH MERRIMACK CO. TELEPHONE CO., DBA CONTOOCOOK VALLEY
603-545 CONCORD NH LIGHTSHIP TELECOM, LLC - NH
603-546 NASHUA NH CHOICE ONE OF NEW HAMPSHIRE, INC.
603-547 GREENFIELD NH VERIZON NEW ENGLAND INC.
603-548 DERRY NH BELL ATLANTIC NYNEX MOBILE
603-549 DERRY NH VERIZON NEW ENGLAND INC.
603-550 NH
603-551 MANCHESTER NH VERIZON NEW ENGLAND INC.
603-552 DERRY NH BROOKS FIBER COMMUNICATIONS - NEW HAMPSHIRE
603-553 DERRY NH NEW CINGULAR WIRELESS PCS, LLC - MA
603-554 MILFORD NH UNITED STATES CELLULAR CORP. - NEW HAMPSHIRE
603-555 MANCHESTER NH VERIZON NEW ENGLAND INC.
603-556 LACONIA NH LEVEL 3 COMMUNICATIONS - NH
603-557 NASHUA NH SPRINT SPECTRUM L.P.
603-558 CLAREMONT NH RURAL CELLULAR CORPORATION
603-559 PORTSMOUTH NH VERIZON NEW ENGLAND INC.
603-560 SALEM NH NEW CINGULAR WIRELESS PCS, LLC - MA
603-561 NASHUA NH VERIZON NEW ENGLAND INC.
603-562 PETERBROGH NH UNITED STATES CELLULAR CORP. - NEW HAMPSHIRE
603-563 DUBLIN NH VERIZON NEW ENGLAND INC.
603-564 MANCHESTER NH VERIZON NEW ENGLAND INC.
603-565 PENACOOK NH LEVEL 3 COMMUNICATIONS - NH
603-566 NASHUA NH BELL ATLANTIC NYNEX MOBILE
603-567 PETERBROGH NH LEVEL 3 COMMUNICATIONS - NH
603-568 CONCORD NH BELL ATLANTIC NYNEX MOBILE
603-569 WOLFEBORO NH VERIZON NEW ENGLAND INC.
603-570 PORTSMOUTH NH BROOKS FIBER COMMUNICATIONS - NEW HAMPSHIRE
603-571 DERRY NH NEW CINGULAR WIRELESS PCS, LLC - MA
603-572 NASHUA NH VERIZON NEW ENGLAND INC.
603-573 CONCORD NH BROOKS FIBER COMMUNICATIONS - NEW HAMPSHIRE
603-574 ALSTEAD NH LEVEL 3 COMMUNICATIONS - NH
603-575 LITTLETON NH BROOKS FIBER COMMUNICATIONS - NEW HAMPSHIRE
603-576 ORFORD NH LEVEL 3 COMMUNICATIONS - NH
603-577 NASHUA NH VERIZON NEW ENGLAND INC.
603-578 NASHUA NH VERIZON NEW ENGLAND INC.
603-579 NASHUA NH VERIZON NEW ENGLAND INC.
603-580 EXETER NH COMCAST PHONE OF NEW HAMPSHIRE, LLC - NH
603-581 LACONIA NH CHOICE ONE OF NEW HAMPSHIRE, INC.
603-582 MERRIMACK NH UNITED STATES CELLULAR CORP. - NEW HAMPSHIRE
603-583 EXETER NH LEVEL 3 COMMUNICATIONS - NH
603-584 MANCHESTER NH GLOBAL NAPS, INC. - NH
603-585 FITZWILLIM NH VERIZON NEW ENGLAND INC.
603-586 JEFFERSON NH VERIZON NEW ENGLAND INC.
603-587 CANDIA NH BROOKS FIBER COMMUNICATIONS - NEW HAMPSHIRE
603-588 ANTRIM NH MERRIMACK CO. TELEPHONE CO., DBA CONTOOCOOK VALLEY
603-589 NASHUA NH PAETEC COMMUNICATIONS, INC. - NH
603-590 DURHAM NH FREEDOM RING COMMUNICATIONS, LLC
603-591 MANCHESTER NH SPRINT SPECTRUM L.P. - NH
603-592 SPOFFORD NH BROOKS FIBER COMMUNICATIONS - NEW HAMPSHIRE
603-593 JAFFREY NH CTC COMMUNICATIONS - NH
603-594 NASHUA NH VERIZON NEW ENGLAND INC.
603-595 NASHUA NH VERIZON NEW ENGLAND INC.
603-596 NASHUA NH VERIZON NEW ENGLAND INC.
603-597 LYME NH BROOKS FIBER COMMUNICATIONS - NEW HAMPSHIRE
603-598 NASHUA NH VERIZON NEW ENGLAND INC.
603-599 NASHUA NH VERIZON NEW ENGLAND INC.
603-601 HAMPTON NH PAETEC COMMUNICATIONS, INC. - NH
603-603 NH
603-606 MANCHESTER NH CONVERSENT COMMUNICATIONS OF NEW HAMPSHIRE, LLC
603-608 NORTHWOOD NH NEXTEL COMMUNICATIONS, INC.
603-609 DOVER NH RNK, INC.
603-610 PORTSMOUTH NH CHOICE ONE OF NEW HAMPSHIRE, INC.
603-611 NH
603-612 PLAISTOW NH CONVERSENT COMMUNICATIONS OF NEW HAMPSHIRE, LLC
603-613 COLEBROOK NH BROOKS FIBER COMMUNICATIONS - NEW HAMPSHIRE
603-614 WCHESTEFLD NH LEVEL 3 COMMUNICATIONS - NH