New Hampshire
Area code 603 reported phone numbers
Area code 603 is assigned to New Hampshire, with 752 prefixes in use held by 51 carriers and rate centers such as Manchester, Nashua, Concord, Dover, Derry, Portsmouth. Consumers have filed 805 complaints about 708 numbers in this area code, and 24 of those numbers have enough reports to get their own page.
708Reported numbers
805Complaints
366Complaints, last 30 days
Oct 21, 2026Last complaint
Most reported 603 numbers in the last 30 days
| Phone number | Last 30 days | Most reported topic |
|---|---|---|
| (603) 602-9863 | 5 | Other |
| (603) 570-4474 | 4 | Dropped call or no message |
| (603) 383-5462 | 4 | Dropped call or no message |
| (603) 451-1398 | 4 | Not specified |
| (603) 651-0533 | 4 | Other |
| (603) 257-9035 | 3 | Dropped call or no message |
| (603) 441-5064 | 3 | Not specified |
| (603) 441-5065 | 3 | Dropped call or no message |
| (603) 444-0408 | 3 | Not specified |
| (603) 256-5118 | 3 | Not specified |
| (603) 399-5538 | 3 | Other |
| (603) 482-6730 | 3 | Other |
| (603) 935-9108 | 3 | Dropped call or no message |
| (603) 377-3068 | 2 | Other |
| (603) 696-6899 | 2 | Dropped call or no message |
Scammers often fake caller IDs with local area codes (“neighbor spoofing”) so their calls look familiar. A local number on this list may be spoofed rather than owned by the caller.
All 603 numbers with repeated complaints
| Phone number | Complaints | Topic | Last reported |
|---|---|---|---|
| (603) 651-0533 | 4 | Other | Oct 20, 2026 |
| (603) 570-4474 | 8 | Dropped call or no message | Oct 20, 2026 |
| (603) 383-5462 | 4 | Dropped call or no message | Oct 19, 2026 |
| (603) 482-6730 | 3 | Other | Oct 18, 2026 |
| (603) 518-6151 | 4 | Dropped call or no message | Oct 15, 2026 |
| (603) 709-2055 | 3 | Impostor calls | Oct 15, 2026 |
| (603) 256-5118 | 3 | Not specified | Oct 15, 2026 |
| (603) 377-3068 | 4 | Other | Oct 15, 2026 |
| (603) 441-5064 | 4 | Not specified | Oct 15, 2026 |
| (603) 399-5538 | 3 | Other | Oct 13, 2026 |
| (603) 514-6048 | 3 | Other | Oct 11, 2026 |
| (603) 316-3465 | 4 | Impostor calls | Oct 11, 2026 |
| (603) 696-6899 | 4 | Dropped call or no message | Oct 10, 2026 |
| (603) 257-9035 | 6 | Dropped call or no message | Oct 9, 2026 |
| (603) 602-9863 | 5 | Other | Oct 7, 2026 |
| (603) 444-0408 | 4 | Not specified | Oct 6, 2026 |
| (603) 506-4983 | 3 | Dropped call or no message | Oct 4, 2026 |
| (603) 935-9108 | 3 | Dropped call or no message | Oct 4, 2026 |
| (603) 441-5065 | 4 | Dropped call or no message | Sep 23, 2026 |
| (603) 451-1398 | 4 | Not specified | Sep 23, 2026 |
| (603) 259-1199 | 3 | Impostor calls | Sep 21, 2026 |
| (603) 257-9012 | 3 | Other | Sep 20, 2026 |
| (603) 450-4010 | 4 | Dropped call or no message | Sep 15, 2026 |
| (603) 864-6488 | 4 | Impostor calls | Sep 13, 2026 |