Area Code Information
| Area Code: | 406 |
| State: | Montana |
| Primary City: | Billings, Montana |
| Time Zone: | Mountain |
Area code 406 serves the Billings, Montana region in Montana. This area code is in the Mountain time zone.
Browse Prefixes
Click on any prefix to browse phone numbers in that exchange:
406-200
406-201
406-202
406-203
406-204
406-205
406-206
406-207
406-208
406-209
406-210
406-211
406-212
406-213
406-214
406-215
406-216
406-217
406-218
406-219
406-220
406-221
406-222
406-223
406-224
406-225
406-226
406-227
406-228
406-229
Showing sample prefixes. All prefixes from 200-999 are available.