603 area code: where it is and which numbers are reported
603 covers Manchester, Nashua and Concord in New Hampshire. 556 numbers in it drew 608 complaints between Oct 2, 2025 and Oct 31, 2026.
About area code 603
LocationNew Hampshire
Main citiesManchester, Nashua, Concord, Portsmouth
Local time now
Time zoneEastern
In service since1947
Numbers reported556
Complaints608
Most reported asOther, calls, live calls
Reported 603 numbers
Most reported first. A number links to its own page once it has complaints from two or more days.
(603) 257-9035 9 complaints Otherlast Oct 21, 2026
(603) 651-0533 4 complaints Otherlast Oct 20, 2026
(603) 383-5462 4 complaints Dropped calllast Oct 19, 2026
(603) 570-4474 4 complaints Dropped calllast Oct 14, 2026
(603) 451-1398 4 complaints Callslast Sep 23, 2026
(603) 444-0408 3 complaints Callslast Oct 23, 2026
(603) 768-1743 3 complaints Live callslast Oct 18, 2026
(603) 399-5538 3 complaints Otherlast Oct 13, 2026
(603) 257-9023 3 complaints Otherlast Aug 7, 2026
(603) 476-3606 2 complaints Live callslast Oct 27, 2026
(603) 519-3526 2 complaints Otherlast Oct 23, 2026
(603) 461-5720 2 complaints Imposterslast Oct 22, 2026
(603) 314-3099 2 complaints Otherlast Oct 21, 2026
(603) 550-8951 2 complaints Dropped calllast Oct 5, 2026
(603) 509-9530 2 complaints Vacation timesharelast Sep 25, 2026
(603) 846-6349 2 complaints Medicallast Sep 24, 2026
(603) 441-5065 2 complaints Callslast Sep 23, 2026
(603) 591-9564 2 complaints Callslast Sep 23, 2026
(603) 766-6449 2 complaints Debt reductionlast Sep 18, 2026
(603) 310-8356 2 complaints Otherlast Sep 17, 2026
(603) 212-1107 2 complaints Dropped calllast Sep 3, 2026
(603) 324-2846 2 complaints Dropped calllast Sep 3, 2026
(603) 399-5370 2 complaints Otherlast Sep 3, 2026
(603) 475-5073 2 complaints Dropped calllast Aug 26, 2026
(603) 506-4666 2 complaints Otherlast Aug 25, 2026
The 25 most reported of 556 numbers.
When 603 numbers were reported
Complaints a month, last 13 months
170 in the busiest month
NovDecJanFebMarAprMayJunJulAugSepOctNov
| November 2025: 6 |
| December 2025: 2 |
| January 2026: 8 |
| February 2026: 10 |
| March 2026: 8 |
| April 2026: 5 |
| May 2026: 8 |
| June 2026: 5 |
| July 2026: 77 |
| August 2026: 147 |
| September 2026: 170 |
| October 2026: 162 |
Hour of day, as reported in complaints
Busiest around 10 am
12 am6 am12 pm6 pm
| 12 am: 1 |
| 1 am: 1 |
| 2 am: 2 |
| 3 am: 1 |
| 4 am: 1 |
| 5 am: 1 |
| 6 am: 7 |
| 7 am: 9 |
| 8 am: 20 |
| 9 am: 66 |
| 10 am: 77 |
| 11 am: 68 |
| 12 pm: 61 |
| 1 pm: 62 |
| 2 pm: 55 |
| 3 pm: 28 |
| 4 pm: 18 |
| 5 pm: 18 |
| 6 pm: 11 |
| 7 pm: 13 |
| 8 pm: 7 |
| 9 pm: 9 |
| 10 pm: 6 |
| 11 pm: 2 |
The most reported 603 prefixes
Complaints by the three digits after the area code.
- (603) 257
- 152%
- (603) 333
- 91%
- (603) 619
- 91%
- (603) 697
- 91%
- (603) 441
- 91%
603 numbers that unwanted calls gave to contact
Numbers in this area code that complaints named as the number a call or text asked people to contact.
(603) 206-7387 2 complaints
(603) 212-5489 1 complaint
(603) 900-9880 1 complaint
(603) 212-5498 1 complaint
(603) 200-3325 1 complaint
(603) 409-4717 1 complaint
(603) 602-7927 1 complaint
(603) 420-2574 1 complaint
(603) 709-2055 1 complaint from 1 caller ID
(603) 410-5025 1 complaint
Towns and cities in area code 603
97 places its numbers are assigned to, the ones with the most numbers first.
- Manchester
- Nashua
- Concord
- Portsmouth
- Dover
- Salem
- Keene
- Exeter
- Laconia
- Merrimack
- Rochester
- Lebanon
- Hampton
- Moultonborough
- Plaistow
- Derry
- Bedford
- Claremont
- Hanover
- Durham
- Colebrook
- Winchester
- Belmont
- Meredith
- Tilton
- Gilford
- West Lebanon
- Tamworth
- Hampstead
- North Conway
- Atkinson
- Jackson
- Henniker
- Pittsfield
- Littleton
- Conway
- Warner
- Deerfield
- Hillsboro
- Hollis
- Gorham
- Seabrook
- Candia
- New Boston
- Goffstown
- Sanbornville
- Canaan
- New London
- Weare
- Jaffrey
- Plymouth
- Greenfield
- Wolfeboro
- Fitzwilliam
- Antrim
- Enfield
- Pelham
- Groveton
- Kingston
- Wilton
- Newmarket
- Barrington
- Milford
- Epping
- Somersworth
- Campton
- Epsom
- Bristol
- Lincoln
- Woodsville
- Berlin
- Farmington
- Walpole
- Sunapee
- Dunbarton
- Rumney
- North Haverhill
- Lancaster
- Chichester
- Franconia
- Charlestown
- Alstead
- Whitefield
- Lisbon
- Newport
- Alton
- Marlborough
- New Ipswich
- Chester
- Raymond
- Rindge
- Peterborough
- Franklin
- Bradford
- Northwood
- North Hampton
- Ashland
Check a number
Enter a number. Bewary checks it against FTC and FCC scam and robocall complaints and its scam lists.
Sources
Complaints consumers filed with the FCC and FTC, Oct 2, 2025 to Oct 31, 2026. Bewary counts the reports and does not check each one. Scammers can fake the number that shows on your phone, so a reported number may belong to someone who never called you.