← Area code 423
423-688 phone numbers
Numbers 423-688-0000 to 423-688-9999 are assigned to Telnyx LLC in Sneedville, TN. 3 of its ten thousand-number blocks are assigned to other carriers (number pooling).
Not assigned to any carrier: 423-688-1xxx, 423-688-2xxx, 423-688-3xxx, 423-688-4xxx, 423-688-5xxx, 423-688-6xxx — calls from these use spoofed caller IDs.
Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.
Reported numbers in 423-688
- 1 (423) 688-9309 4complaints
- 2 (423) 688-9503 3complaints
- 3 (423) 688-9552 3complaints
- 4 (423) 688-0104 1complaints
- 5 (423) 688-0285 1complaints
- 6 (423) 688-0295 1complaints
- 7 (423) 688-0675 1complaints
- 8 (423) 688-0883 1complaints
- 9 (423) 688-4270 1complaints
- 10 (423) 688-8478 1complaints
- 11 (423) 688-8560 1complaints
- 12 (423) 688-9188 1complaints
- 13 (423) 688-9252 1complaints
- 14 (423) 688-9360 1complaints
- 15 (423) 688-9469 1complaints
- 16 (423) 688-9524 1complaints
- 17 (423) 688-9569 1complaints
- 18 (423) 688-9623 1complaints
- 19 (423) 688-9674 1complaints
- 20 (423) 688-9699 1complaints
- 21 (423) 688-9780 1complaints
- 22 (423) 688-9804 1complaints
- 23 (423) 688-9854 1complaints
- 24 (423) 688-9916 1complaints
- 25 (423) 688-9932 1complaints
- 26 (423) 688-9987 1complaints