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About 603 Area Code

Located in: New Hampshire

Major Cities: Newmarket, Manchester, Nashua, Portsmouth, Lyme, Keene, Suncook, Salem, Milford, Errol, Berlin, Derry, Bristol, Concord, Colebrook, Plymouth, Winchester, Troy, Woodsville, Raymond, Dover, Plaistow, Hollis, Littleton, Merrimack, New boston, Tilton, Belmont, Piermont, Laconia, Hanover, Meredith, Barrington, Canaan, Claremont, Greenville, Durham, Bartlett, Chester, Enfield, Lebanon, Newport, Bedford, Milan, Tamworth, Hampstead, Rochester, Hinsdale, Kingston, Milton, Goffstown, Orford, Spofford, Madison, Candia, Ashland, Rye beach, Jackson, Jefferson, Exeter, Sunapee, Henniker, Pittsfield, Marlow, Conway, Warner, Deerfield, Hillsboro, Gorham, Seabrook, Meriden, Washington, Lancaster, Pelham, Wolfeboro, Hancock, New london, Weare, Jaffrey, Pittsburg, Greenfield, Dublin, Penacook, Alstead, Antrim, Hampton, Northwood, Pike, Groveton, Monroe, Salisbury, Wilton, Franklin, Plainfield, Epping, Chatham, New durham, Canterbury, Andover, Epsom, Contoocook, Farmington, Walpole, Warren, Danbury, Barnstead, Rumney, Boscawen, Chichester, Franconia, Whitefield, Lisbon, Sullivan, Alton, Bethlehem, Rindge, Sutton, Bradford

Major Carriers: , Comcast, Bandwidth/13 - Bandwidth.com - SVR, Teleport Communications America, LLC, Consolidated Communications, Inc., AT&T Wireless, Verizon Wireless, Sprint Spectrum, L.P., T-Mobile USA, Inc., Cricket Wireless - ATT - SVR, US Cellular Corp., Paetec Communications, Inc., CenturyLink, Level 3 Communications, LLC, Vonage Essentials - Sybase365, Vonage Retail - Level3 - Sybase365, AT&T Mobility, Pinger - Bandwidth.com - Sybase365, Bandwidth/RingCentral Messaging - Sybase365, Onvoy, LLC, Onvoy Spectrum, LLC, MCI Metro, ATS, Inc., Freedom Ring Communications, LLC, Time Warner Communications, Twilio Hosted - SMS-Sybase365/MMS-SVR, Conversent Communications, LLC, Enflick - Bandwidth.com - SVR, Telnyx LLC, Skype Communications SARL - Level3 - SVR, CRC Communications, Inc., Broadview Networks, Inc., Zipwhip/FairPoint Communications SMSEnabled - FairPointCommunications - Sybase365, Consolidated Communications Enterprise Services, Bandwidth.com CLEC, LLC, Vonage Network Inc., Lightship Telecom, LLC, Choice One Communications, Inc., CTC Communications, Bandwidth SMSEnabled - Bandwidth CLEC - Sybase365, Vonage/Nexmo - Sybase365, Republic Wireless - Bandwidth.com - Sybase365, Otel Telekom, Inc. - NH, TextNow - Bandwidth.com - SVR, Peerless Network, Onvoy/3 - Sybase365, Twilio - Inteliquent - SMS-Sybase365/MMS-SVR, Google (Grand Central) BWI - Bandwidth.com - SVR, TextPlus - Inteliquent - SVR, Twilio US1 - Level3 - SMS-Sybase365/MMS-SVR, TextPlus - 360 Networks - SVR

Prefixes in Area Code 603

603-200NEWMARKET

603-203MANCHESTER

603-204NASHUA

603-205PORTSMOUTH

603-206MANCHESTER

603-208LYME

603-209KEENE

603-210SUNCOOK

603-212SALEM

603-213MILFORD

603-214ERROL

603-215BERLIN

603-216DERRY

603-217BRISTOL

603-218MANCHESTER

603-219CONCORD

603-221NASHUA

603-222MANCHESTER

603-223CONCORD

603-224CONCORD

603-225CONCORD

603-226CONCORD

603-227CONCORD

603-228CONCORD

603-229CONCORD

603-230CONCORD

603-231DERRY

603-232MANCHESTER

603-233NASHUA

603-234DERRY

603-235DERRY

603-237COLEBROOK

603-238PLYMOUTH

603-239WINCHESTER

603-240MANCHESTER

603-241MANCHESTER

603-242TROY

603-243WOODSVILLE

603-244RAYMOND

603-245PORTSMOUTH

603-247DERRY

603-248DOVER

603-249MILFORD

603-254PLYMOUTH

603-257PLAISTOW

603-258HOLLIS

603-259LITTLETON

603-260DERRY

603-261MERRIMACK

603-262MERRIMACK

603-263MANCHESTER

603-264MANCHESTER

603-265NEW BOSTON

603-266TILTON

603-267BELMONT

603-268SUNCOOK

603-270SUNCOOK

603-271CONCORD

603-272PIERMONT

603-273LACONIA

603-275DERRY

603-277HANOVER

603-279MEREDITH

603-280BARRINGTON

603-281NASHUA

603-282CANAAN

603-283KEENE

603-285DOVER

603-286TILTON

603-287CLAREMONT

603-288NASHUA

603-289MANCHESTER

603-290CONCORD

603-291GREENVILLE

603-292NEWMARKET

603-293LACONIA

603-294PORTSMOUTH

603-295DURHAM

603-296MANCHESTER

603-299BARTLETT

603-300CHESTER

603-302MANCHESTER

603-303RAYMOND

603-304ENFIELD

603-305NASHUA

603-306LEBANON

603-308HANOVER

603-309NEWPORT

603-310BEDFORD

603-312DOVER

603-313KEENE

603-314MANCHESTER

603-315MANCHESTER

603-316MILFORD

603-317MILAN

603-318NASHUA

603-319PORTSMOUTH

603-320NASHUA

603-321NASHUA

603-323TAMWORTH

603-324NASHUA

603-325NEW BOSTON

603-326BERLIN

603-327SALEM

603-328SALEM

603-329HAMPSTEAD

603-330ROCHESTER

603-331COLEBROOK

603-332ROCHESTER

603-333CONCORD

603-334PORTSMOUTH

603-335ROCHESTER

603-336HINSDALE

603-337ROCHESTER

603-338KEENE

603-339DERRY

603-340SUNCOOK

603-341MERRIMACK

603-342BERLIN

603-343DOVER

603-344SUNCOOK

603-345MERRIMACK

603-346PLYMOUTH

603-347KINGSTON

603-350MILTON

603-351GOFFSTOWN

603-352KEENE

603-353ORFORD

603-354KEENE

603-355KEENE

603-357KEENE

603-358KEENE

603-359LEBANON

603-360ORFORD

603-361MANCHESTER

603-362HAMPSTEAD

603-363SPOFFORD

603-365MERRIMACK

603-366LACONIA

603-367MADISON

603-368PORTSMOUTH

603-369CONCORD

603-370CANDIA

603-372CLAREMONT

603-373PORTSMOUTH

603-374BARTLETT

603-375ASHLAND

603-376DOVER

603-377MERRIMACK

603-378PLAISTOW

603-379RYE BEACH

603-380PORTSMOUTH

603-382PLAISTOW

603-383JACKSON

603-384GOFFSTOWN

603-385MANCHESTER

603-386SALEM

603-387LACONIA

603-388COLEBROOK

603-389DURHAM

603-390JEFFERSON

603-391MANCHESTER

603-392WINCHESTER

603-393LACONIA

603-395EXETER

603-396MERRIMACK

603-397DURHAM

603-400HOLLIS

603-401SALEM

603-402NASHUA

603-403ROCHESTER

603-404DERRY

603-406CONCORD

603-407BELMONT

603-408BERLIN

603-409LACONIA

603-410CONCORD

603-412PLYMOUTH

603-413MANCHESTER

603-414SUNAPEE

603-415CONCORD

603-416RAYMOND

603-417NASHUA

603-418EXETER

603-419SUNCOOK

603-420MERRIMACK

603-421DERRY

603-422PORTSMOUTH

603-423MERRIMACK

603-424MERRIMACK

603-425DERRY

603-426DERRY

603-427PORTSMOUTH

603-428HENNIKER

603-429MERRIMACK

603-430PORTSMOUTH

603-431PORTSMOUTH

603-432DERRY

603-433PORTSMOUTH

603-434DERRY

603-435PITTSFIELD

603-436PORTSMOUTH

603-437DERRY

603-438NASHUA

603-439KEENE

603-440MERRIMACK

603-442LEBANON

603-443LEBANON

603-444LITTLETON

603-446MARLOW

603-447CONWAY

603-448LEBANON

603-449MILAN

603-450CONCORD

603-452CONWAY

603-454SUNAPEE

603-455LACONIA

603-456WARNER

603-458SALEM

603-459NASHUA

603-460DEERFIELD

603-461MERRIMACK

603-462DEERFIELD

603-463DEERFIELD

603-464HILLSBORO

603-465HOLLIS

603-466GORHAM

603-467MANCHESTER

603-468SEABROOK

603-469MERIDEN

603-470CONCORD

603-471BEDFORD

603-472BEDFORD

603-474SEABROOK

603-475SALEM

603-477CLAREMONT

603-479DERRY

603-480MANCHESTER

603-481PLYMOUTH

603-482ERROL

603-483CANDIA

603-484NASHUA

603-485SUNCOOK

603-486MANCHESTER

603-487NEW BOSTON

603-488BEDFORD

603-489HAMPSTEAD

603-490DERRY

603-491CONCORD

603-492MANCHESTER

603-493MERRIMACK

603-494MERRIMACK

603-495WASHINGTON

603-496CONCORD

603-497GOFFSTOWN

603-498PORTSMOUTH

603-499KEENE

603-501PORTSMOUTH

603-502PORTSMOUTH

603-503LANCASTER

603-504CLAREMONT

603-505DERRY

603-506MANCHESTER

603-507ROCHESTER

603-508PELHAM

603-509ROCHESTER

603-510MERIDEN

603-512MANCHESTER

603-513CONCORD

603-515WOLFEBORO

603-516DOVER

603-517MERRIMACK

603-518MANCHESTER

603-519EXETER

603-520LACONIA

603-521NASHUA

603-523CANAAN

603-524LACONIA

603-525HANCOCK

603-526NEW LONDON

603-527LACONIA

603-528LACONIA

603-529WEARE

603-530BRISTOL

603-531PORTSMOUTH

603-532JAFFREY

603-533MERRIMACK

603-534DOVER

603-535PLYMOUTH

603-536PLYMOUTH

603-537DERRY

603-538PITTSBURG

603-540MANCHESTER

603-541MANCHESTER

603-542CLAREMONT

603-543CLAREMONT

603-545CONCORD

603-546NASHUA

603-547GREENFIELD

603-548DERRY

603-549DERRY

603-551MANCHESTER

603-552DERRY

603-553DERRY

603-554MILFORD

603-556LACONIA

603-557NASHUA

603-558CLAREMONT

603-559PORTSMOUTH

603-560SALEM

603-561NASHUA

603-563DUBLIN

603-564MANCHESTER

603-565PENACOOK

603-566NASHUA

603-568CONCORD

603-569WOLFEBORO

603-570PORTSMOUTH

603-571DERRY

603-572NASHUA

603-573CONCORD

603-574ALSTEAD

603-575LITTLETON

603-576ORFORD

603-577NASHUA

603-578NASHUA

603-579NASHUA

603-580EXETER

603-581LACONIA

603-582MERRIMACK

603-583EXETER

603-586JEFFERSON

603-587CANDIA

603-588ANTRIM

603-589NASHUA

603-590DURHAM

603-591MANCHESTER

603-592SPOFFORD

603-593JAFFREY

603-594NASHUA

603-595NASHUA

603-596NASHUA

603-597LYME

603-598NASHUA

603-599NASHUA

603-601HAMPTON

603-604RYE BEACH

603-605DOVER

603-606MANCHESTER

603-608NORTHWOOD

603-609DOVER

603-610PORTSMOUTH

603-612PLAISTOW

603-613COLEBROOK

603-615MANCHESTER

603-616LITTLETON

603-617DOVER

603-618PIKE

603-620MERRIMACK

603-621MANCHESTER

603-622MANCHESTER

603-623MANCHESTER

603-624MANCHESTER

603-625MANCHESTER

603-626MANCHESTER

603-627MANCHESTER

603-628MANCHESTER

603-629MANCHESTER

603-630LACONIA

603-631LANCASTER

603-632ENFIELD

603-633MANCHESTER

603-634MANCHESTER

603-635PELHAM

603-636GROVETON

603-637BEDFORD

603-638MONROE

603-639MANCHESTER

603-640HANOVER

603-641MANCHESTER

603-642KINGSTON

603-643HANOVER

603-644MANCHESTER

603-645MANCHESTER

603-646HANOVER

603-647MANCHESTER

603-648SALISBURY

603-650HANOVER

603-652MILTON

603-653HANOVER

603-654WILTON

603-655MANCHESTER

603-656MANCHESTER

603-657MANCHESTER

603-658EXETER

603-659NEWMARKET

603-660GOFFSTOWN

603-661MANCHESTER

603-662CONWAY

603-663MANCHESTER

603-664BARRINGTON

603-665MANCHESTER

603-666MANCHESTER

603-667LEBANON

603-668MANCHESTER

603-669MANCHESTER

603-670MERRIMACK

603-671FRANKLIN

603-672MILFORD

603-673MILFORD

603-674MANCHESTER

603-675PLAINFIELD

603-676HANOVER

603-677MEREDITH

603-678LEBANON

603-679EPPING

603-680HILLSBORO

603-681SALEM

603-682MANCHESTER

603-683MERRIMACK

603-684LANCASTER

603-685SALEM

603-686EXETER

603-687JACKSON

603-689NASHUA

603-690CLAREMONT

603-693EPPING

603-694CHATHAM

603-695MANCHESTER

603-701NEW DURHAM

603-702KINGSTON

603-703MANCHESTER

603-704DERRY

603-705SALISBURY

603-706RAYMOND

603-707MEREDITH

603-708CANTERBURY

603-709PLAINFIELD

603-712PIKE

603-714BEDFORD

603-715CONCORD

603-716MANCHESTER

603-717CONCORD

603-718NASHUA

603-719KEENE

603-721MILFORD

603-722MANCHESTER

603-723BERLIN

603-724CONCORD

603-725TAMWORTH

603-727LEBANON

603-729TILTON

603-731CONCORD

603-732MILFORD

603-734EPPING

603-735ANDOVER

603-736EPSOM

603-737LACONIA

603-738CONCORD

603-740DOVER

603-741NEW BOSTON

603-742DOVER

603-743DOVER

603-744BRISTOL

603-746CONTOOCOOK

603-747WOODSVILLE

603-748WARNER

603-749DOVER

603-750DOVER

603-751PELHAM

603-752BERLIN

603-753PENACOOK

603-754LANCASTER

603-755FARMINGTON

603-756WALPOLE

603-757KEENE

603-758HAMPTON

603-759NASHUA

603-760SEABROOK

603-761LITTLETON

603-762KEENE

603-763SUNAPEE

603-764WARREN

603-765NASHUA

603-766PORTSMOUTH

603-767DOVER

603-768DANBURY

603-769MILFORD

603-770EXETER

603-771MANCHESTER

603-772EXETER

603-773EXETER

603-775EXETER

603-776BARNSTEAD

603-777EXETER

603-778EXETER

603-779PLYMOUTH

603-780CANAAN

603-781DOVER

603-782MANCHESTER

603-783CANTERBURY

603-785MANCHESTER

603-786RUMNEY

603-787WOODSVILLE

603-788LANCASTER

603-789DANBURY

603-791NASHUA

603-792MANCHESTER

603-793EXETER

603-795LYME

603-796BOSCAWEN

603-797PLAISTOW

603-798CHICHESTER

603-799MANCHESTER

603-800MEREDITH

603-801MILFORD

603-803KEENE

603-808ANTRIM

603-809NASHUA

603-812PORTSMOUTH

603-814SEABROOK

603-815DURHAM

603-816NASHUA

603-817DOVER

603-818DERRY

603-819PLAISTOW

603-820MERRIMACK

603-821NASHUA

603-822ROCHESTER

603-823FRANCONIA

603-824SALEM

603-828PORTSMOUTH

603-829SUNAPEE

603-831GREENFIELD

603-832LACONIA

603-833ROCHESTER

603-834DOVER

603-835ALSTEAD

603-836MANCHESTER

603-837WHITEFIELD

603-838LISBON

603-839FARMINGTON

603-840EPSOM

603-842DOVER

603-843NEWPORT

603-845DERRY

603-847SULLIVAN

603-848CONCORD

603-851MANCHESTER

603-852KEENE

603-853WOODSVILLE

603-854MANCHESTER

603-855ALTON

603-856CONCORD

603-858MANCHESTER

603-859NEW DURHAM

603-860MANCHESTER

603-861TAMWORTH

603-862DURHAM

603-863NEWPORT

603-864NASHUA

603-865NEWPORT

603-866DOVER

603-867MANCHESTER

603-868DURHAM

603-869BETHLEHEM

603-870SALEM

603-873SUNAPEE

603-874MONROE

603-875ALTON

603-877NEW LONDON

603-878GREENVILLE

603-879NASHUA

603-880NASHUA

603-881NASHUA

603-882NASHUA

603-883NASHUA

603-884NASHUA

603-885NASHUA

603-886NASHUA

603-887CHESTER

603-888NASHUA

603-889NASHUA

603-890SALEM

603-891NASHUA

603-892CONCORD

603-893SALEM

603-894SALEM

603-895RAYMOND

603-896SALEM

603-897NASHUA

603-898SALEM

603-899RINDGE

603-901CONWAY

603-902SUTTON

603-903KEENE

603-904WALPOLE

603-905BARRINGTON

603-906BARNSTEAD

603-910HAMPTON

603-912SALEM

603-913MERRIMACK

603-915GORHAM

603-918HAMPTON

603-921NASHUA

603-923ROCHESTER

603-926HAMPTON

603-927SUTTON

603-928SUNCOOK

603-929HAMPTON

603-930NASHUA

603-931CONCORD

603-932MANCHESTER

603-933GREENFIELD

603-934FRANKLIN

603-935MANCHESTER

603-937MEREDITH

603-938BRADFORD

603-941WOLFEBORO

603-942NORTHWOOD

603-943NASHUA

603-945MANCHESTER

603-947PLYMOUTH

603-948ROCHESTER

603-951MILAN

603-952SALEM

603-953DOVER

603-957PORTSMOUTH

603-961CHICHESTER

603-964RYE BEACH

603-965DERRY

603-966NASHUA

603-967HAMPTON

603-968ASHLAND

603-969PORTSMOUTH

603-970DOVER

603-971RINDGE

603-973ROCHESTER

603-974PLAISTOW

603-975BOSCAWEN

603-977ANDOVER

603-978DOVER

603-988PORTSMOUTH

603-989PIKE

603-991LITTLETON

603-992DANBURY

603-994ROCHESTER

603-995HENNIKER

603-996PLYMOUTH

603-997HAMPTON

603-998LACONIA

603-999SALEM