← Area code 603
603-684 phone numbers
Numbers 603-684-0000 to 603-684-9999 are assigned to Level 3 Communications, LLC in Lancaster, NH. 6 of its ten thousand-number blocks are assigned to other carriers (number pooling).
Not assigned to any carrier: 603-684-5xxx, 603-684-7xxx — calls from these use spoofed caller IDs.
Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.
Reported numbers in 603-684
- 1 (603) 684-2516 5complaints
- 2 (603) 684-2389 3complaints
- 3 (603) 684-0145 2complaints
- 4 (603) 684-1906 2complaints
- 5 (603) 684-2491 2complaints
- 6 (603) 684-2541 2complaints
- 7 (603) 684-2594 2complaints
- 8 (603) 684-0141 1complaints
- 9 (603) 684-0237 1complaints
- 10 (603) 684-0592 1complaints
- 11 (603) 684-0909 1complaints
- 12 (603) 684-0967 1complaints
- 13 (603) 684-1927 1complaints
- 14 (603) 684-2412 1complaints
- 15 (603) 684-2479 1complaints
- 16 (603) 684-2494 1complaints
- 17 (603) 684-2505 1complaints
- 18 (603) 684-2514 1complaints
- 19 (603) 684-2523 1complaints
- 20 (603) 684-2534 1complaints
- 21 (603) 684-2590 1complaints
- 22 (603) 684-2832 1complaints
- 23 (603) 684-2953 1complaints
- 24 (603) 684-4684 1complaints
- 25 (603) 684-5937 1complaints
- 26 (603) 684-7238 1complaints
- 27 (603) 684-9227 1complaints
- 28 (603) 684-9234 1complaints