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Area Codes > 603 > Central Office Codes

Exchange Rate Center State Operating Company
603-303 RAYMOND NH BELL ATLANTIC NYNEX MOBILE
603-304 ENFIELD NH UNITED STATES CELLULAR CORP. - NEW HAMPSHIRE
603-305 NASHUA NH BELL ATLANTIC NYNEX MOBILE
603-306 LEBANON NH NATIONAL MOBILE COMMUNICATIONS CORPORATION - VT
603-307 WCHESTEFLD NH GLOBAL NAPS, INC. - NH
603-308 PIERMONT NH GLOBAL NAPS, INC. - NH
603-309 FRANKLIN NH GLOBAL NAPS, INC. - NH
603-310 BEDFORD NH CTC COMMUNICATIONS - NH
603-311 NH
603-312 DOVER NH RURAL CELLULAR CORPORATION
603-313 KEENE NH UNITED STATES CELLULAR CORP. - NEW HAMPSHIRE
603-314 MANCHESTER NH LIGHTSHIP TELECOM, LLC - NH
603-315 MANCHESTER NH BELL ATLANTIC NYNEX MOBILE
603-316 DURHAM NH GLOBAL NAPS, INC. - NH
603-317 MILAN NH BROOKS FIBER COMMUNICATIONS - NEW HAMPSHIRE
603-318 NASHUA NH RNK, INC.
603-319 PORTSMOUTH NH LIGHTSHIP TELECOM, LLC - NH
603-320 NASHUA NH NEW CINGULAR WIRELESS PCS, LLC - MA
603-321 NASHUA NH BELL ATLANTIC NYNEX MOBILE
603-322 W LEBANON NH RURAL CELLULAR CORPORATION
603-323 TAMWORTH NH VERIZON NEW ENGLAND INC.
603-324 NASHUA NH BROOKS FIBER COMMUNICATIONS - NEW HAMPSHIRE
603-325 NEW BOSTON NH BROOKS FIBER COMMUNICATIONS - NEW HAMPSHIRE
603-326 BERLIN NH LEVEL 3 COMMUNICATIONS - NH
603-327 SALEM NH LIGHTSHIP TELECOM, LLC - NH
603-328 SALEM NH PAETEC COMMUNICATIONS, INC. - NH
603-329 HAMPSTEAD NH VERIZON NEW ENGLAND INC.
603-330 ROCHESTER NH VERIZON NEW ENGLAND INC.
603-331 COLEBROOK NH LEVEL 3 COMMUNICATIONS - NH
603-332 ROCHESTER NH VERIZON NEW ENGLAND INC.
603-334 PORTSMOUTH NH VERIZON NEW ENGLAND INC.
603-335 ROCHESTER NH VERIZON NEW ENGLAND INC.
603-336 HINSDALE NH VERIZON NEW ENGLAND INC.
603-337 ROCHESTER NH VERIZON NEW ENGLAND INC.
603-338 KEENE NH BROOKS FIBER COMMUNICATIONS - NEW HAMPSHIRE
603-339 DERRY NH NEW CINGULAR WIRELESS PCS, LLC - MA
603-340 SUNCOOK NH BELL ATLANTIC NYNEX MOBILE
603-341 MERRIMACK NH UNITED STATES CELLULAR CORP. - NEW HAMPSHIRE
603-342 BERLIN NH VERIZON NEW ENGLAND INC.
603-343 DOVER NH COMCAST PHONE OF NEW HAMPSHIRE, LLC - NH
603-344 SUNCOOK NH UNITED STATES CELLULAR CORP. - NEW HAMPSHIRE
603-345 MERRIMACK NH UNITED STATES CELLULAR CORP. - NEW HAMPSHIRE
603-346 PLYMOUTH NH LEVEL 3 COMMUNICATIONS - NH
603-347 KINGSTON NH COMCAST PHONE OF NEW HAMPSHIRE, LLC - NH
603-348 NOWOODSTOK NH UNITED STATES CELLULAR CORP. - NEW HAMPSHIRE
603-349 W LEBANON NH UNITED STATES CELLULAR CORP. - NEW HAMPSHIRE
603-350 MILTON NH BROOKS FIBER COMMUNICATIONS - NEW HAMPSHIRE
603-351 GOFFSTOWN NH BROOKS FIBER COMMUNICATIONS - NEW HAMPSHIRE
603-352 KEENE NH VERIZON NEW ENGLAND INC.
603-353 ORFORD NH VERIZON NEW ENGLAND INC.
603-354 KEENE NH VERIZON NEW ENGLAND INC.
603-355 KEENE NH VERIZON NEW ENGLAND INC.
603-356 NO CONWAY NH VERIZON NEW ENGLAND INC.
603-357 KEENE NH VERIZON NEW ENGLAND INC.
603-358 KEENE NH VERIZON NEW ENGLAND INC.
603-359 LEBANON NH RURAL CELLULAR CORPORATION
603-361 MANCHESTER NH BELL ATLANTIC NYNEX MOBILE
603-362 HAMPSTEAD NH VERIZON NEW ENGLAND INC.
603-363 SPOFFORD NH VERIZON NEW ENGLAND INC.
603-364 GLNTNIRWRS NH UNION TELEPHONE CO. - NH
603-365 MERRIMACK NH NEXTEL COMMUNICATIONS, INC.
603-366 LACONIA NH VERIZON NEW ENGLAND INC.
603-367 MADISON NH VERIZON NEW ENGLAND INC.
603-368 NEWPORT NH GLOBAL NAPS, INC. - NH
603-369 CONCORD NH LEVEL 3 COMMUNICATIONS - NH
603-370 CANDIA NH BELL ATLANTIC NYNEX MOBILE
603-371 PETERBROGH NH CONVERSENT COMMUNICATIONS OF NEW HAMPSHIRE, LLC
603-372 CLAREMONT NH FREEDOM RING COMMUNICATIONS, LLC
603-373 PORTSMOUTH NH CONVERSENT COMMUNICATIONS OF NEW HAMPSHIRE, LLC
603-374 BARTLETT NH VERIZON NEW ENGLAND INC.
603-375 CONCORD NH GLOBAL NAPS, INC. - NH
603-376 DOVER NH VERIZON NEW ENGLAND INC.
603-377 MERRIMACK NH OMNIPOINT MIAMI E LICENSE, LLC
603-378 PLAISTOW NH VERIZON NEW ENGLAND INC.
603-379 RYE BEACH NH BROOKS FIBER COMMUNICATIONS - NEW HAMPSHIRE
603-380 PORTSMOUTH NH NEW CINGULAR WIRELESS PCS, LLC - MA
603-381 W LEBANON NH UNITED STATES CELLULAR CORP. - NEW HAMPSHIRE
603-382 PLAISTOW NH VERIZON NEW ENGLAND INC.
603-383 JACKSON NH VERIZON NEW ENGLAND INC.
603-384 GOFFSTOWN NH COMCAST PHONE OF NEW HAMPSHIRE, LLC - NH
603-385 MANCHESTER NH VERIZON NEW ENGLAND INC.
603-386 SALEM NH BROADVIEW NETWORKS, INC. - NH
603-387 LACONIA NH BELL ATLANTIC NYNEX MOBILE
603-388 COLEBROOK NH FREEDOM RING COMMUNICATIONS, LLC
603-389 DURHAM NH CHOICE ONE OF NEW HAMPSHIRE, INC.
603-390 JEFFERSON NH BROOKS FIBER COMMUNICATIONS - NEW HAMPSHIRE
603-391 MANCHESTER NH TELEPORT COMMUNICATIONS OF BOSTON, INC. - NH
603-392 WINCHESTER NH COMCAST PHONE OF NEW HAMPSHIRE, LLC - NH
603-393 LACONIA NH UNITED STATES CELLULAR CORP. - NEW HAMPSHIRE
603-394 SO HAMPTON NH VERIZON NEW ENGLAND INC.
603-395 EXETER NH BROOKS FIBER COMMUNICATIONS - NEW HAMPSHIRE
603-396 MERRIMACK NH NEXTEL COMMUNICATIONS, INC.
603-397 DURHAM NH COMCAST PHONE OF NEW HAMPSHIRE, LLC - NH
603-398 W LEBANON NH UNITED STATES CELLULAR CORP. - NEW HAMPSHIRE
603-399 WESTMORELD NH VERIZON NEW ENGLAND INC.
603-401 SALEM NH BELL ATLANTIC NYNEX MOBILE
603-402 NH
603-403 NH
603-404 NH
603-405 NH