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603 Area Code
Area code 603 serves Manchester, Nashua, Concord, Dover, Rochester and nearby communities in New Hampshire. It has been in service since January 1, 1947.
Who issues 603 numbers
Mobile 15%VoIP and cable 21%Landline 64%
Share of the 752 prefixes (the three digits after 603) assigned to each type of carrier. Classification by carrier name, approximate.
| Carrier | Prefixes |
|---|---|
| Consolidated Comm Of No. New England | 246 |
| Bell Atlantic Mobile | 74 |
| Paetec Itel | 58 |
| Verizon Business (MCImetro) | 45 |
| Comcast (Xfinity) | 40 |
| T-Mobile | 38 |
| UScellular | 37 |
| Lumen (Level 3) | 37 |
Cities and towns in area code 603
| City | Population | Other area codes |
|---|---|---|
| Manchester | 116,818 | |
| Nashua | 92,435 | |
| Concord | 44,597 | |
| Dover | 34,623 | |
| Rochester | 33,716 | |
| Keene | 23,072 | |
| Portsmouth | 23,028 | |
| Derry | 21,668 | |
| Laconia | 17,246 | |
| Lebanon | 15,481 | |
| Claremont | 13,032 | |
| Londonderry | 12,307 | |
| Somersworth | 12,171 | |
| Durham | 10,577 | |
| Exeter | 10,138 | |
| Hampton | 9,960 | |
| Berlin | 9,502 | |
| Milford | 8,857 | |
| Franklin | 8,839 | |
| Hanover | 8,520 | |
| Hudson | 7,105 | |
| South Hooksett | 5,806 | |
| Newmarket | 5,730 | |
| Hooksett | 5,362 | |
| Newport | 5,185 | |
| Suncook | 5,075 |
Got a call from 603?
A 603 number was originally issued in New Hampshire, but that does not prove the caller is there. 21% of 603 prefixes belong to VoIP and cable providers, whose numbers can be bought online and used from anywhere. Caller ID can also be spoofed, so treat urgent requests for money, codes or passwords from any area code with suspicion, and call back on a number you already know.
All 752 prefixes in area code 603
Format: (603) XXX-YYYY. Carrier is the company the block was originally assigned to; numbers may since have been ported to another carrier.
603-200Comcast (Xfinity) · Newmarket603-202T-Mobile · Concord603-203AT&T Mobility · Manchester603-204UScellular · Nashua603-205T-Mobile · Portsmouth603-206Paetec Itel · Manchester603-207Onvoy (Sinch) · Derry603-208UScellular603-209UScellular · Keene603-210Comcast (Xfinity) · Suncook603-212Consolidated Comm Of No. New England603-213Comcast (Xfinity) · Milford603-214Freedom Ring Communications603-215Freedom Ring Communications · Berlin603-216Comcast (Xfinity) · Derry603-217Bell Atlantic Mobile · Bristol603-218Paetec Itel · Manchester603-219T-Mobile · Concord603-221Consolidated Comm Of No. New England · Nashua603-222Consolidated Comm Of No. New England · Manchester603-223Consolidated Comm Of No. New England · Concord603-224Consolidated Comm Of No. New England · Concord603-225Consolidated Comm Of No. New England · Concord603-226Consolidated Comm Of No. New England · Concord603-227Consolidated Comm Of No. New England · Concord603-228Consolidated Comm Of No. New England · Concord603-229Consolidated Comm Of No. New England · Concord603-230Consolidated Comm Of No. New England · Concord603-231T-Mobile · Derry603-232Comcast (Xfinity) · Manchester603-233T-Mobile · Nashua603-234T-Mobile · Derry603-235T-Mobile · Derry603-236Consolidated Comm Of No. New England603-237Consolidated Comm Of No. New England · Colebrook603-238Paetec Itel · Plymouth603-239Consolidated Comm Of No. New England · Winchester603-240Consolidated Comm Of No. New England · Manchester603-241AT&T Mobility · Dover603-242Consolidated Comm Of No. New England · Troy603-243Charter Ip Enabled Services · Woodsville603-244Comcast (Xfinity) · Raymond603-245Consolidated Comm Of No. New England · Portsmouth603-246Consolidated Comm Of No. New England · West Stewartstown603-247AT&T Mobility · Derry603-248Consolidated Comm Of No. New England · Dover603-249Consolidated Comm Of No. New England · Milford603-250Freedom Ring Communications603-251Paetec Itel · Charlestown603-252UScellular603-253Consolidated Comm Of No. New England603-254UScellular · Plymouth603-255Csc Wireless · Manchester603-256Consolidated Comm Of No. New England603-257Freedom Ring Communications603-258Metropcs603-259Lumen (Level 3) · Littleton603-260Comcast (Xfinity) · Derry603-261UScellular603-262Consolidated Comm Of No. New England603-263Peerless Network · Manchester603-264T-Mobile · Manchester603-265T-Mobile · New Boston603-266Consolidated Comm Of No. New England · Tilton Northfield603-267Consolidated Comm Of No. New England · Belmont603-268Consolidated Comm Of No. New England · Suncook603-269Union Tel. Co.603-270Verizon Business (MCImetro) · Suncook603-271Consolidated Comm Of No. New England · Concord603-272Consolidated Comm Of No. New England603-273Verizon Business (MCImetro) · Laconia603-274Verizon Business (MCImetro)603-275T-Mobile · Derry603-276Bell Atlantic Mobile603-277Comcast (Xfinity) · Hanover603-278Bretton Woods Tel. Co.603-279Consolidated Comm Of No. New England · Meredith603-280Lumen (Level 3)603-281Consolidated Comm Of No. New England · Nashua603-282Verizon Business (MCImetro) · Canaan603-283Paetec Itel · Keene603-284Consolidated Comm Of No. New England · Center Sandwich603-285Verizon Business (MCImetro) · Dover603-286Consolidated Comm Of No. New England · Tilton Northfield603-287Lumen (Level 3) · Claremont603-288Vonage · Nashua603-289AT&T Mobility · Manchester603-290UScellular · Concord603-291Comcast (Xfinity) · Greenville603-292Comcast (Xfinity) · Newmarket603-293Consolidated Comm Of No. New England · Laconia603-294Lumen (Level 3) · Portsmouth603-295Paetec Itel · Durham603-296Paetec Itel · Manchester603-297Freedom Ring Communications · Center Ossipee603-298Consolidated Comm Of No. New England603-299AT&T Mobility · Bartlett603-300Metropcs603-301Lumen (Level 3) · Center Ossipee603-302Consolidated Comm Of No. New England · Manchester603-303Bell Atlantic Mobile · Raymond603-304UScellular · Enfield603-305Bell Atlantic Mobile · Nashua603-306Freedom Ring Communications · Lebanon603-307Bell Atlantic Mobile · North Conway603-308Consolidated Comm Of No. New England · Hanover603-309Bell Atlantic Mobile · Newport603-310Paetec Itel603-312Bell Atlantic Mobile · Dover603-313UScellular · Keene603-314Paetec Itel · Manchester603-315Bell Atlantic Mobile · Manchester603-316Bell Atlantic Mobile · Milford603-317Verizon Business (MCImetro)603-318Bell Atlantic Mobile · Nashua603-319Paetec Itel · Portsmouth603-320AT&T Mobility · Nashua603-321Bell Atlantic Mobile · Nashua603-322AT&T Mobility603-323Consolidated Comm Of No. New England603-324Verizon Business (MCImetro) · Nashua603-325Verizon Business (MCImetro) · New Boston603-326Lumen (Level 3) · Berlin603-327Paetec Itel603-328Paetec Itel603-329Consolidated Comm Of No. New England603-330Consolidated Comm Of No. New England · Rochester603-331Lumen (Level 3) · Colebrook603-332Consolidated Comm Of No. New England · Rochester603-333Peerless Network · Concord603-334Consolidated Comm Of No. New England · Portsmouth603-335Consolidated Comm Of No. New England · Rochester603-336Consolidated Comm Of No. New England · Hinsdale603-337Consolidated Comm Of No. New England · Rochester603-338Verizon Business (MCImetro) · Keene603-339AT&T Mobility · Derry603-340Bell Atlantic Mobile · Suncook603-341UScellular603-342Consolidated Comm Of No. New England · Berlin603-343Comcast (Xfinity) · Dover603-344UScellular · Suncook603-345UScellular603-346Hd Carrier · Plymouth603-347Comcast (Xfinity)603-348UScellular · North Woodstock603-349UScellular603-350Verizon Business (MCImetro) · Milton603-351Verizon Business (MCImetro) · Goffstown603-352Consolidated Comm Of No. New England · Keene603-353Consolidated Comm Of No. New England603-354Consolidated Comm Of No. New England · Keene603-355Consolidated Comm Of No. New England · Keene603-356Consolidated Comm Of No. New England · North Conway603-357Fidium Enterprise Services · Keene603-358Consolidated Comm Of No. New England · Keene603-359Bell Atlantic Mobile · Lebanon603-360Topsham Communications603-361Bell Atlantic Mobile · Manchester603-362Consolidated Comm Of No. New England603-363Consolidated Comm Of No. New England603-364Union Tel. Co.603-365T-Mobile603-366Consolidated Comm Of No. New England · Laconia603-367Consolidated Comm Of No. New England603-368AT&T (Teleport) · Portsmouth603-369Lumen (Level 3) · Concord603-370Bell Atlantic Mobile603-371Paetec Itel · Peterborough603-372Freedom Ring Communications · Claremont603-373Paetec Itel · Portsmouth603-374Consolidated Comm Of No. New England · Bartlett603-375Twc Ip Enabled Services · Ashland603-376American Messaging Services · Dover603-377T-Mobile603-378Consolidated Comm Of No. New England603-379Lumen (Level 3)603-380AT&T Mobility · Portsmouth603-381UScellular603-382Consolidated Comm Of No. New England603-383Consolidated Comm Of No. New England603-384Comcast (Xfinity) · Goffstown603-385Consolidated Comm Of No. New England · Manchester603-386Paetec Itel603-387Bell Atlantic Mobile · Laconia603-388Freedom Ring Communications · Colebrook603-389Paetec Itel · Durham603-390Verizon Business (MCImetro)603-391AT&T (Teleport) · Manchester603-392Comcast (Xfinity) · Winchester603-393UScellular · Laconia603-394Consolidated Comm Of No. New England603-395Verizon Business (MCImetro) · Exeter603-396T-Mobile603-397Comcast (Xfinity) · Durham603-398UScellular603-399Consolidated Comm Of No. New England603-400Charter Ip Enabled Services603-401Bell Atlantic Mobile603-402Bell Atlantic Mobile · Nashua603-403Comcast (Xfinity) · Rochester603-404Bell Atlantic Mobile · Derry603-405AT&T (Teleport) · Somersworth603-406T-Mobile · Concord603-407Paetec Itel · Belmont603-408AT&T Mobility · Berlin603-409AT&T Mobility · Laconia603-410Paetec Itel · Concord603-412UScellular · Plymouth603-413Paetec Itel · Manchester603-414Tds Metrocom603-415Freedom Ring Communications · Concord603-416T-Mobile · Raymond603-417T-Mobile · Nashua603-418Paetec Itel · Exeter603-419UScellular · Suncook603-420Verizon Business (MCImetro)603-421Consolidated Comm Of No. New England · Derry603-422Consolidated Comm Of No. New England · Portsmouth603-423Consolidated Comm Of No. New England603-424Consolidated Comm Of No. New England603-425Consolidated Comm Of No. New England · Derry603-426Consolidated Comm Of No. New England · Derry603-427Consolidated Comm Of No. New England · Portsmouth603-428Contoocook Valley · Henniker603-429Consolidated Comm Of No. New England603-430Consolidated Comm Of No. New England · Portsmouth603-431Consolidated Comm Of No. New England · Portsmouth603-432Consolidated Comm Of No. New England · Derry603-433Consolidated Comm Of No. New England · Portsmouth603-434Consolidated Comm Of No. New England · Derry603-435Consolidated Comm Of No. New England · Pittsfield603-436Consolidated Comm Of No. New England · Portsmouth603-437Consolidated Comm Of No. New England · Derry603-438T-Mobile · Nashua603-439Paetec Itel · Keene603-440Consolidated Comm Of No. New England603-441Comcast (Xfinity) · Rochester603-442Consolidated Comm Of No. New England · Lebanon603-443Consolidated Comm Of No. New England · Lebanon603-444Consolidated Comm Of No. New England · Littleton603-445Consolidated Comm Of No. New England · North Walpole603-446Consolidated Comm Of No. New England603-447Consolidated Comm Of No. New England · Conway603-448Consolidated Comm Of No. New England · Lebanon603-449Consolidated Comm Of No. New England603-450T-Mobile · Concord603-451AT&T Mobility · Concord603-452Freedom Ring Communications · Conway603-453At&T - Local603-454UScellular603-455UScellular · Laconia603-456Merrimack County Tel. Co. · Warner603-457Idt America, Corp. · Dover603-458Comcast (Xfinity)603-459Paetec Itel · Nashua603-460Verizon Business (MCImetro)603-461UScellular603-462Freedom Ring Communications603-463Consolidated Comm Of No. New England603-464Contoocook Valley · Hillsborough603-465Hollis Telephone Company603-466Consolidated Comm Of No. New England · Gorham603-467Wavenation · Manchester603-468Freedom Ring Communications · Seabrook Beach603-469Kearsarge Tel. Co.603-470UScellular · Concord603-471Consolidated Comm Of No. New England603-472Consolidated Comm Of No. New England603-473Consolidated Comm Of No. New England · Milton Mills603-474Consolidated Comm Of No. New England · Seabrook Beach603-475Bell Atlantic Mobile603-476Consolidated Comm Of No. New England · Center Sandwich603-477UScellular · Claremont603-478Granite State Tel.603-479AT&T Mobility · Derry603-480Bandwidth · Manchester603-481Bell Atlantic Mobile · Plymouth603-482Consolidated Comm Of No. New England603-483Consolidated Comm Of No. New England603-484Bell Atlantic Mobile · Nashua603-485Consolidated Comm Of No. New England · Suncook603-486UScellular · Manchester603-487Consolidated Comm Of No. New England · New Boston603-488Comcast (Xfinity)603-489Comcast (Xfinity)603-490Bell Atlantic Mobile · Derry603-491Bell Atlantic Mobile · Concord603-492Consolidated Comm Of No. New England · Manchester603-493Bell Atlantic Mobile603-494Bell Atlantic Mobile603-495Granite State Tel.603-496Bell Atlantic Mobile · Concord603-497Consolidated Comm Of No. New England · Goffstown603-498Bell Atlantic Mobile · Portsmouth603-499Lumen (Level 3) · Keene603-500Fractel · Tilton Northfield603-501Paetec Itel · Portsmouth603-502AT&T Mobility · Portsmouth603-503Verizon Business (MCImetro) · Lancaster603-504UScellular · Claremont603-505Bell Atlantic Mobile · Derry603-506AT&T Mobility · Manchester603-507AT&T Mobility · Rochester603-508Bell Atlantic Mobile603-509Paetec Itel · Rochester603-510Comcast (Xfinity)603-512T-Mobile · Manchester603-513Bell Atlantic Mobile · Concord603-514Bell Atlantic Mobile · Nashua603-515Consolidated Comm Of No. New England · Wolfeboro603-516Freedom Ring Communications · Dover603-517American Messaging Services603-518At&T - Local · Manchester603-519Bell Atlantic Mobile · Exeter603-520Bell Atlantic Mobile · Laconia603-521At&T - Local · Nashua603-522Consolidated Comm Of No. New England · Sanbornville603-523Consolidated Comm Of No. New England · Canaan603-524Consolidated Comm Of No. New England · Laconia603-525Consolidated Comm Of No. New England · Hancock603-526Kearsarge Tel. Co. · New London603-527Consolidated Comm Of No. New England · Laconia603-528Consolidated Comm Of No. New England · Laconia603-529Granite State Tel.603-530Bell Atlantic Mobile · Bristol603-531AT&T Mobility · Portsmouth603-532Consolidated Comm Of No. New England · Jaffrey603-533UScellular603-534Bell Atlantic Mobile · Dover603-535Paetec Itel · Plymouth603-536Consolidated Comm Of No. New England · Plymouth603-537Consolidated Comm Of No. New England · Derry603-538Consolidated Comm Of No. New England603-539Consolidated Comm Of No. New England · Center Ossipee603-540Bell Atlantic Mobile · Manchester603-541Fidium Enterprise Services · Manchester603-542Consolidated Comm Of No. New England · Claremont603-543Consolidated Comm Of No. New England · Claremont603-544Contoocook Valley · Melvin Village603-545Paetec Itel · Concord603-546Paetec Itel · Nashua603-547Consolidated Comm Of No. New England603-548Bell Atlantic Mobile · Derry603-549Consolidated Comm Of No. New England · Derry603-550Telnyx · Dover603-551Consolidated Comm Of No. New England · Manchester603-552Verizon Business (MCImetro) · Derry603-553AT&T Mobility · Derry603-554UScellular · Milford603-556Lumen (Level 3) · Laconia603-557T-Mobile · Nashua603-558Bell Atlantic Mobile · Claremont603-559Consolidated Comm Of No. New England · Portsmouth603-560AT&T Mobility603-561Consolidated Comm Of No. New England · Nashua603-562UScellular · Peterborough603-563Consolidated Comm Of No. New England603-564Consolidated Comm Of No. New England · Manchester603-565Lumen (Level 3)603-566Bell Atlantic Mobile · Nashua603-567Lumen (Level 3) · Peterborough603-568Bell Atlantic Mobile · Concord603-569Consolidated Comm Of No. New England · Wolfeboro603-570AT&T (Teleport) · Portsmouth603-571AT&T Mobility · Derry603-573Verizon Business (MCImetro) · Concord603-574Lumen (Level 3)603-575Verizon Business (MCImetro) · Littleton603-576Lumen (Level 3)603-577Consolidated Comm Of No. New England · Nashua603-578Consolidated Comm Of No. New England · Nashua603-579Consolidated Comm Of No. New England · Nashua603-580Comcast (Xfinity) · Exeter603-581Paetec Itel · Laconia603-582UScellular603-583Lumen (Level 3) · Exeter603-584T-Mobile · Concord603-585Consolidated Comm Of No. New England603-586Consolidated Comm Of No. New England603-587Verizon Business (MCImetro)603-588Contoocook Valley · Antrim603-589Paetec Itel · Nashua603-590Freedom Ring Communications · Durham603-591T-Mobile · Manchester603-592Verizon Business (MCImetro)603-593Paetec Itel · Jaffrey603-594Consolidated Comm Of No. New England · Nashua603-595Consolidated Comm Of No. New England · Nashua603-596Consolidated Comm Of No. New England · Nashua603-597Verizon Business (MCImetro)603-598Consolidated Comm Of No. New England · Nashua603-599Consolidated Comm Of No. New England · Nashua603-600Commio · Manchester603-601Paetec Itel · Hampton603-602AT&T (Teleport) · Rochester603-604Consolidated Comm Of No. New England603-605Peerless Network · Dover603-606Onvoy (Sinch) · Manchester603-607Nuso603-608Metropcs · North Woodstock603-609AT&T Mobility · Dover603-610Paetec Itel · Portsmouth603-612Paetec Itel603-613Verizon Business (MCImetro) · Colebrook603-614Lumen (Level 3)603-615Consolidated Comm Of No. New England · Manchester603-616UScellular · Littleton603-617Paetec Itel · Dover603-618Lumen (Level 3)603-619Comcast (Xfinity) · Laconia603-620UScellular603-621Consolidated Comm Of No. New England · Manchester603-622Consolidated Comm Of No. New England · Manchester603-623Consolidated Comm Of No. New England · Manchester603-624Consolidated Comm Of No. New England · Manchester603-625Consolidated Comm Of No. New England · Manchester603-626Consolidated Comm Of No. New England · Manchester603-627Consolidated Comm Of No. New England · Manchester603-628Consolidated Comm Of No. New England · Manchester603-629Consolidated Comm Of No. New England · Manchester603-630Bell Atlantic Mobile · Laconia603-631UScellular · Lancaster603-632Consolidated Comm Of No. New England · Enfield603-633Bell Atlantic Mobile · Milford603-634Consolidated Comm Of No. New England · Manchester603-635Consolidated Comm Of No. New England603-636Consolidated Comm Of No. New England · Groveton603-637Verizon Business (MCImetro)603-638Consolidated Comm Of No. New England603-639Consolidated Comm Of No. New England · Manchester603-640Consolidated Comm Of No. New England · Hanover603-641Consolidated Comm Of No. New England · Manchester603-642Consolidated Comm Of No. New England603-643Consolidated Comm Of No. New England · Hanover603-644Consolidated Comm Of No. New England · Manchester603-645Consolidated Comm Of No. New England · Manchester603-646Consolidated Comm Of No. New England · Hanover603-647Consolidated Comm Of No. New England · Manchester603-648Kearsarge Tel. Co.603-649Comcast (Xfinity) · Jaffrey603-650Consolidated Comm Of No. New England · Hanover603-651UScellular · Center Ossipee603-652Consolidated Comm Of No. New England · Milton603-653Consolidated Comm Of No. New England · Hanover603-654Wilton Tel. Co. · Wilton603-655Consolidated Comm Of No. New England · Manchester603-656Fidium Enterprise Services · Manchester603-657Paetec Itel · Manchester603-658Freedom Ring Communications · Exeter603-659Consolidated Comm Of No. New England · Newmarket603-660Bell Atlantic Mobile · Goffstown603-661T-Mobile · Manchester603-662UScellular · Conway603-663Consolidated Comm Of No. New England · Manchester603-664Consolidated Comm Of No. New England603-665Consolidated Comm Of No. New England · Manchester603-666Consolidated Comm Of No. New England · Manchester603-667Verizon Business (MCImetro) · Lebanon603-668Consolidated Comm Of No. New England · Manchester603-669Consolidated Comm Of No. New England · Manchester603-670Paetec Itel603-671Verizon Business (MCImetro) · Franklin603-672Consolidated Comm Of No. New England · Milford603-673Consolidated Comm Of No. New England · Milford603-674T-Mobile · Manchester603-675Consolidated Comm Of No. New England · Plainfield603-676Freedom Ring Communications · Hanover603-677Verizon Business (MCImetro) · Meredith603-678Lumen (Level 3) · Lebanon603-679Consolidated Comm Of No. New England · Epping603-680Fidium Enterprise Services · Hillsborough603-681Paetec Itel603-682T-Mobile · Manchester603-683Consolidated Comm Of No. New England603-684Lumen (Level 3) · Lancaster603-685Paetec Itel603-686Bell Atlantic Mobile · Exeter603-687Freedom Ring Communications603-688Peerless Network · Concord603-689Paetec Itel · Nashua603-690Verizon Business (MCImetro) · Claremont603-691Commio · Exeter603-692Consolidated Comm Of No. New England · Somersworth603-693Paetec Itel · Epping603-694Consolidated Communications Of Maine Company603-695Consolidated Comm Of No. New England · Manchester603-696Onvoy (Sinch) · Manchester603-697Comcast (Xfinity) · Dover603-698Nuso · Manchester603-699Nuso · Nashua603-701Idt America, Corp.603-702Bell Atlantic Mobile603-703Otel Telekom · Manchester603-704AT&T (Teleport) · Derry603-705Comcast (Xfinity)603-706Paetec Itel · Raymond603-707Bell Atlantic Mobile · Meredith603-708Comcast (Xfinity)603-709Lumen (Level 3) · Plainfield603-710AT&T Mobility603-712Verizon Business (MCImetro)603-713Onvoy (Sinch) · Nashua603-714Bell Atlantic Mobile603-715Comcast (Xfinity) · Concord603-716Bell Atlantic Mobile · Manchester603-717Paetec Itel · Concord603-718Bell Atlantic Mobile · Nashua603-719Freedom Ring Communications · Keene603-720Twc Ip Enabled Services · Troy603-721Metropcs · Milford603-722Bandwidth · Manchester603-723UScellular · Berlin603-724Paetec Itel · Concord603-725Lumen (Level 3)603-726Consolidated Comm Of No. New England603-727Paetec Itel · Lebanon603-728Lumen (Level 3) · North Woodstock603-729Verizon Business (MCImetro) · Tilton Northfield603-730Verizon Business (MCImetro) · North Conway603-731Bell Atlantic Mobile · Concord603-732Verizon Business (MCImetro) · Milford603-733Lumen (Level 3) · North Conway603-734Verizon Business (MCImetro) · Epping603-735Kearsarge Tel. Co.603-736Consolidated Comm Of No. New England603-737Freedom Ring Communications · Laconia603-738AT&T Mobility · Concord603-739Verizon Business (MCImetro) · North Woodstock603-740Consolidated Comm Of No. New England · Dover603-741Lumen (Level 3) · New Boston603-742Consolidated Comm Of No. New England · Dover603-743Consolidated Comm Of No. New England · Dover603-744Consolidated Comm Of No. New England · Bristol603-745Consolidated Comm Of No. New England · North Woodstock603-746Merrimack County Tel. Co. · Contoocook603-747Consolidated Comm Of No. New England · Woodsville603-748Bell Atlantic Mobile · Warner603-749Consolidated Comm Of No. New England · Dover603-750Fidium Enterprise Services · Dover603-751Verizon Business (MCImetro)603-752Consolidated Comm Of No. New England · Berlin603-753Consolidated Comm Of No. New England603-754Freedom Ring Communications · Lancaster603-755Consolidated Comm Of No. New England · Farmington603-756Consolidated Comm Of No. New England · Walpole603-757Paetec Itel · Keene603-758Paetec Itel · Hampton603-759Bell Atlantic Mobile · Nashua603-760AT&T (Teleport) · Seabrook Beach603-761Freedom Ring Communications · Littleton603-762Bell Atlantic Mobile · Keene603-763Consolidated Comm Of No. New England603-764Consolidated Comm Of No. New England603-765T-Mobile · Nashua603-766Freedom Ring Communications · Portsmouth603-767AT&T Mobility · Dover603-768Consolidated Comm Of No. New England603-769Lumen (Level 3) · Milford603-770Bell Atlantic Mobile · Exeter603-771Consolidated Comm Of No. New England · Manchester603-772Consolidated Comm Of No. New England · Exeter603-773Consolidated Comm Of No. New England · Exeter603-774Dunbarton Tel. Co.603-775Consolidated Comm Of No. New England · Exeter603-776Union Tel. Co.603-777Consolidated Comm Of No. New England · Exeter603-778Consolidated Comm Of No. New England · Exeter603-779Verizon Business (MCImetro) · Plymouth603-780Lumen (Level 3) · Canaan603-781AT&T Mobility · Dover603-782Lumen (Level 3) · Manchester603-783Consolidated Comm Of No. New England603-784Verizon Business (MCImetro) · Peterborough603-785AT&T Mobility · Manchester603-786Consolidated Comm Of No. New England603-787Consolidated Comm Of No. New England · Woodsville603-788Consolidated Comm Of No. New England · Lancaster603-789Freedom Ring Communications603-790Bell Atlantic Mobile603-791Consolidated Comm Of No. New England · Nashua603-792Freedom Ring Communications · Manchester603-793Metropcs · Exeter603-794AT&T Mobility · Laconia603-795Consolidated Comm Of No. New England603-796Kearsarge Tel. Co.603-797Verizon Business (MCImetro)603-798Kearsarge Tel. Co.603-799Metropcs · Manchester603-800Fractel · Meredith603-801Bell Atlantic Mobile · Milford603-802Onvoy (Sinch) · Concord603-803Lumen (CenturyLink) · Keene603-804Boost Subscriberco L.L.C. · Dover603-805Verizon Business (MCImetro) · Concord603-808Comcast (Xfinity) · Antrim603-809Bell Atlantic Mobile · Nashua603-810Telnyx · Nashua603-812Bell Atlantic Mobile · Portsmouth603-813Idt America, Corp.603-814Comcast (Xfinity) · Seabrook Beach603-815AT&T (Teleport) · Durham603-816Freedom Ring Communications · Nashua603-817T-Mobile · Dover603-818T-Mobile · Derry603-819Lumen (Level 3)603-820Metropcs603-821Paetec Itel · Nashua603-822Paetec Itel · Rochester603-823Consolidated Comm Of No. New England603-824Verizon Business (MCImetro)603-825Ton80 Communications · Manchester603-826Consolidated Comm Of No. New England · Charlestown603-827Consolidated Comm Of No. New England603-828Bell Atlantic Mobile · Portsmouth603-829Verizon Business (MCImetro)603-831Bell Atlantic Mobile603-832Paetec Itel · Laconia603-833Bell Atlantic Mobile · Rochester603-834Paetec Itel · Dover603-835Consolidated Comm Of No. New England603-836Comcast (Xfinity) · Manchester603-837Consolidated Comm Of No. New England · Whitefield603-838Consolidated Comm Of No. New England · Lisbon603-839Twc Ip Enabled Services · Farmington603-840Comcast (Xfinity)603-841Comcast (Xfinity) · Somersworth603-842Paetec Itel · Dover603-843Freedom Ring Communications · Newport603-845Paetec Itel · Derry603-846Consolidated Comm Of No. New England603-847Consolidated Comm Of No. New England603-848UScellular · Concord603-850AT&T Mobility · Lisbon603-851Bell Atlantic Mobile · Manchester603-852T-Mobile · Keene603-853Freedom Ring Communications · Woodsville603-854AT&T Mobility · Manchester603-855Idt America, Corp. · Alton603-856Paetec Itel · Concord603-857Leap Telecom · Suncook603-858T-Mobile · Manchester603-859Union Tel. Co.603-860Bell Atlantic Mobile · Manchester603-861Verizon Business (MCImetro)603-862Paetec Itel · Durham603-863Consolidated Comm Of No. New England · Newport603-864Consolidated Comm Of No. New England · Nashua603-865Consolidated Comm Of No. New England · Newport603-866T-Mobile · Dover603-867AT&T Mobility · Manchester603-868Consolidated Comm Of No. New England · Durham603-869Consolidated Comm Of No. New England · Bethlehem603-870Consolidated Comm Of No. New England603-871Lumen (Level 3) · Sanbornville603-872Idt America, Corp.603-873Lumen (Level 3)603-874Lumen (Level 3)603-875Union Tel. Co. · Alton603-876Consolidated Comm Of No. New England · Marlborough603-877Comcast (Xfinity) · New London603-878Consolidated Comm Of No. New England · Greenville603-879Consolidated Comm Of No. New England · Nashua603-880Telnyx · Nashua603-881Consolidated Comm Of No. New England · Nashua603-882Consolidated Comm Of No. New England · Nashua603-883Consolidated Comm Of No. New England · Nashua603-884Consolidated Comm Of No. New England · Nashua603-885Consolidated Comm Of No. New England · Nashua603-886Consolidated Comm Of No. New England · Nashua603-887Granite State Tel.603-888Consolidated Comm Of No. New England · Nashua603-889Consolidated Comm Of No. New England · Nashua603-890Consolidated Comm Of No. New England603-891Consolidated Comm Of No. New England · Nashua603-892T-Mobile · Concord603-893Consolidated Comm Of No. New England603-894Consolidated Comm Of No. New England603-895Consolidated Comm Of No. New England · Raymond603-896Consolidated Comm Of No. New England603-897Consolidated Comm Of No. New England · Nashua603-898Consolidated Comm Of No. New England603-899Consolidated Comm Of No. New England603-900Fractel · Newport603-901Verizon Business (MCImetro) · Conway603-902Comcast (Xfinity)603-903Bell Atlantic Mobile · Keene603-904Otel Telekom · Walpole603-905Otel Telekom603-906Idt America, Corp.603-910Paetec Itel · Hampton603-912Terra Nova Telecom603-913Paetec Itel603-915Bell Atlantic Mobile · Gorham603-916T-Mobile · Meredith603-918Bell Atlantic Mobile · Hampton603-919Bell Atlantic Mobile · Rochester603-921Bell Atlantic Mobile · Nashua603-922Consolidated Comm Of No. New England603-923Lumen (Level 3) · Rochester603-924Consolidated Comm Of No. New England · Peterborough603-925Freedom Ring Communications · Peterborough603-926Consolidated Comm Of No. New England · Hampton603-927Merrimack County Tel. Co.603-928Freedom Ring Communications · Suncook603-929Consolidated Comm Of No. New England · Hampton603-930AT&T Mobility · Nashua603-931Verizon Business (MCImetro) · Concord603-932Onvoy (Sinch) · Manchester603-933Bell Atlantic Mobile603-934Consolidated Comm Of No. New England · Franklin603-935Comcast (Xfinity) · Manchester603-937Bell Atlantic Mobile · Meredith603-938Merrimack County Tel. Co. · Bradford603-939Consolidated Communications Of Maine Company603-941Verizon Business (MCImetro) · Wolfeboro603-942Consolidated Comm Of No. New England · North Woodstock603-943T-Mobile · Nashua603-944Metropcs603-945Onvoy (Sinch) · Manchester603-947Freedom Ring Communications · Plymouth603-948Idt America, Corp. · Rochester603-951Lumen (Level 3)603-952Lumen (Level 3)603-953Paetec Itel · Dover603-956Vonage · Portsmouth603-957AT&T Mobility · Portsmouth603-960Bell Atlantic Mobile603-961Comcast (Xfinity)603-964Consolidated Comm Of No. New England603-965Paetec Itel · Derry603-966T-Mobile · Nashua603-967Lumen (Level 3) · Hampton603-968Consolidated Comm Of No. New England · Ashland603-969T-Mobile · Portsmouth603-970AT&T Mobility · Dover603-971Freedom Ring Communications603-973Metropcs · Rochester603-974Comcast (Xfinity)603-975Comcast (Xfinity)603-977Comcast (Xfinity)603-978AT&T Mobility · Dover603-986Bell Atlantic Mobile · North Conway603-988T-Mobile · Portsmouth603-989Consolidated Comm Of No. New England603-991Bell Atlantic Mobile · Littleton603-992Lumen (Level 3)603-994Freedom Ring Communications · Rochester603-995T-Mobile · Henniker603-996Metropcs · Plymouth603-997Metropcs · Hampton603-998Metropcs · Laconia603-999Fractel
Questions about area code 603
- Where is area code 603?
- Area code 603 is in New Hampshire. It covers Manchester, Nashua, Concord, Dover, Rochester, Keene and 20 more cities and towns.
- What time zone is area code 603?
- Area code 603 is in the Eastern time zone.
- Is 603 a toll-free number?
- No. 603 is a geographic area code in New Hampshire. Toll-free numbers in the US start with 800, 833, 844, 855, 866, 877 or 888.
- Will area code 603 run out of numbers?
- NANPA's latest forecast projects area code 603 to exhaust in the fourth quarter of 2040. Before that happens, a new area code is usually added as an overlay; existing numbers keep their code.