← Area code 406
406-512 phone numbers
Numbers 406-512-0000 to 406-512-9999 are assigned to Level 3 Communications, LLC in Boulder, MT. 3 of its ten thousand-number blocks are assigned to other carriers (number pooling).
Not assigned to any carrier: 406-512-3xxx, 406-512-4xxx, 406-512-5xxx, 406-512-6xxx, 406-512-7xxx, 406-512-9xxx — calls from these use spoofed caller IDs.
Source: North American Numbering Plan Administrator, Nov 3, 2026. Numbers can move between carriers.
Reported numbers in 406-512
- 1 (406) 512-8512 2complaints
- 2 (406) 512-0036 1complaints
- 3 (406) 512-0338 1complaints
- 4 (406) 512-0563 1complaints
- 5 (406) 512-1945 1complaints
- 6 (406) 512-2073 1complaints
- 7 (406) 512-2255 1complaints
- 8 (406) 512-2827 1complaints
- 9 (406) 512-3761 1complaints
- 10 (406) 512-8013 1complaints
- 11 (406) 512-8034 1complaints
- 12 (406) 512-8267 1complaints
- 13 (406) 512-8622 1complaints
- 14 (406) 512-8632 1complaints
- 15 (406) 512-8709 1complaints
- 16 (406) 512-8731 1complaints
- 17 (406) 512-8740 1complaints
- 18 (406) 512-8764 1complaints
- 19 (406) 512-8779 1complaints
- 20 (406) 512-8794 1complaints
- 21 (406) 512-8860 1complaints
- 22 (406) 512-8861 1complaints
- 23 (406) 512-8949 1complaints