Who Called Me from Area Code 406?
Quick answerA 406 call usually comes from Billings or nearby communities, but caller ID can be spoofed, so a local-looking number isn’t proof. If there’s no voicemail, let it go: legitimate callers leave messages.
- No voicemail? Let it go. Real callers leave messages.
- Recognize the pattern? Check the number in the prefix lookup.
- Getting repeats? ActiveArmor® blocks and labels them automatically.
- Same prefix calling again? Compare it against this month’s most-reported 406 prefixes, right on this page.
- Curious who issued a number? Every 406 prefix belongs to a carrier — the registry names it.
Been targeted?Report the call at reportfraud.ftc.gov — reports feed the complaint data that powers spam blocking, including the board on this page. AT&T customers already have ActiveArmor® screening built in.
Most-reported 406 prefixes this month
PrefixReported patternReport volume
(406) 520-XXXXRobocall-heavy
(406) 968-XXXXRobocall-heavy
(406) 812-XXXXRobocall-heavy
(406) 500-XXXXRobocall-heavy
(406) 213-XXXXRobocall-heavy
188 unwanted-call reports naming 406 numbers in FTC Do Not Call complaint data, July 2–17, 2026. Consumer-reported and unverified.
Block spam calls in the 406, included with AT&T wireless
AT&T ActiveArmor® is the network-level security that screens the calls this page is about:
- Fraud calls blocked automatically on the network
- Suspected spam labeled before you answer
- Caller ID & custom call blocking in the free app
- Reverse number lookup (available with ActiveArmor Advanced security. Fee required.)
- Identity monitoring & identity theft insurance (available with ActiveArmor Advanced security. Fee required.)
Included with AT&T wireless plans. Requires compatible device/service and download of the AT&T ActiveArmor® app. Other terms & restrictions apply. May not detect all threats and may block wanted calls. Some features require Advanced mobile security ($7/mo.). See terms.
See how ActiveArmor worksIncluded with the free 30-day AT&T Wireless℠ trialTry AT&T Wireless℠ free for 30 daysDownload the AT&T app, activate a trial eSIM in minutes, and run our network side by side with your current service. No credit card, keep your number.
- 100GB of data plus 25GB hotspot
- Unlimited talk & text in the U.S., Canada and Mexico
- Texting from the U.S. to 200+ countries & territories
- Access to the AT&T 5G network
Offer details
Service good for 30 days. Data: Limited to 100GB of data and 25GB of hotspot data. No additional data is available after limit is reached. Video is limited to SD quality. Talk & Text: Includes unlimited talk & text within the U.S. and unlimited text from the U.S. to over 230 countries. Limits: One trial per user. An unlocked, dual eSIM iPhone is required. You’ll receive a trial phone number that belongs to AT&T and is not available to be ported to another carrier or otherwise retained. Trial plan features and details may differ from or be unavailable in other AT&T plans. U.S. only. All terms subject to change at any time.
Is Area Code 406 a Scam?
No. 406 is a legitimate Billings area code.
It’s one of the original 1947 codes and serves Billings and surrounding communities. But legitimacy of the code says nothing about any single call. Scammers spoof local numbers constantly.
The code is realOriginal 1947 code for the Billings area with 754 assigned carrier prefixes.
Spoofing happens“Neighbor spoofing” fakes local numbers. No voicemail? Let it go.
Screening includedActiveArmor® labels and blocks suspected spam. Included with AT&T wireless plans.
Been targeted? Report it to the FTC at reportfraud.ftc.gov. Reports feed the complaint data that powers spam blocking.
Scam texts from area code 406 numbers
The most common area code 406 text scam is the “wrong number” opener: a friendly message that pretends to know you, then moves the chat to WhatsApp and eventually to an investment pitch. Scripts currently circulating:
- “U at home?” · “Are you busy tomorrow?” · “How are you doing?”
- Delivery-problem and job-offer texts that link out to a login page
Don’t reply. A response marks your number as live. Forward scam texts to 7726 (SPAM), and AT&T ActiveArmor® filters known senders automatically.
How number spoofing works in area code 406
Caller ID is easy to forge. Spoofing fakes the number a call displays. The real owner of that 406 number isn’t involved and usually has no idea. That’s why blocking one number rarely stops the calls.
- A call from a number almost identical to yours (same 406 and prefix) is “mirror spoofing.” A missed call from your own number is never worth returning.
- Strangers calling you back saying you called them? Your 406 number is being spoofed. It typically passes within days, and you don’t need a new number. Report it at reportfraud.ftc.gov.
- The caller-ID checkmark: AT&T verifies network calls (STIR/SHAKEN). A verified mark means the displayed number wasn’t faked. No mark doesn’t always mean scam, but treat it with more caution.
Spoofed or not, the rule holds: unexpected caller, no voicemail? Let it go.
406 Area Code Prefix & Carrier Lookup
The three digits after the area code identify the carrier a number was issued to. All 754 assigned 406 prefixes below are real, from the public numbering registry. Type to filter.
This isn’t a reverse phone lookup: no legitimate free service can tell you who owns a specific number. What a 406 prefix does show: the carrier that issued it, whether it’s wireless, landline or VoIP, and the community it belongs to, which is often enough to judge whether a call was worth returning.
754 prefixes · updated monthly
| Prefix | Carrier | Line type |
|---|---|---|
| 406-200 | AT&T (Teleport Communications) | Landline |
| 406-201 | AT&T Mobility | Wireless |
| 406-202 | AT&T Mobility | Wireless |
| 406-203 | Lumen (Level 3) | VoIP |
| 406-204 | Lumen (Level 3) | VoIP |
| 406-205 | Lumen (Level 3) | VoIP |
| 406-206 | Lumen (Level 3) | VoIP |
| 406-207 | AT&T Mobility | Wireless |
| 406-208 | AT&T Mobility | Wireless |
| 406-209 | AT&T Mobility | Wireless |
| 406-210 | Verizon Wireless | Wireless |
| 406-212 | AT&T Mobility | Wireless |
| 406-213 | Lumen (Level 3) | VoIP |
| 406-214 | Verizon Wireless | Wireless |
| 406-215 | Skye Telecom LLC dba Skyetel | Landline |
| 406-216 | 3 Rivers Telephone Cooperative | Landline |
| 406-217 | Verizon Wireless | Wireless |
| 406-218 | T-Mobile | Wireless |
| 406-219 | Bandwidth.com | VoIP |
| 406-220 | AT&T Mobility | Wireless |
| 406-221 | Onvoy (Sinch) | VoIP |
| 406-222 | Qwest Corporation | Landline |
| 406-223 | Verizon Wireless | Wireless |
| 406-224 | Verizon Wireless | Wireless |
| 406-225 | Qwest Corporation | Landline |
| 406-226 | Qwest Corporation | Landline |
| 406-227 | Qwest Corporation | Landline |
| 406-228 | Nemont Tel Coop | Landline |
| 406-229 | AT&T Mobility | Wireless |
| 406-230 | Verizon Wireless | Wireless |
| 406-231 | AT&T Mobility | Wireless |
| 406-232 | Qwest Corporation | Landline |
| 406-233 | Qwest Corporation | Landline |
| 406-234 | Mid-Rivers Telephone Cooperative | Landline |
| 406-235 | Qwest Corporation | Landline |
| 406-236 | 3 Rivers Tel. Coop. | Landline |
| 406-237 | Qwest Corporation | Landline |
| 406-238 | Qwest Corporation | Landline |
| 406-239 | AT&T Mobility | Wireless |
| 406-240 | AT&T Mobility | Wireless |
| 406-241 | AT&T Mobility | Wireless |
| 406-242 | AT&T Mobility | Wireless |
| 406-243 | Qwest Corporation | Landline |
| 406-244 | Blackfoot Tel. Coop. | Landline |
| 406-245 | Qwest Corporation | Landline |
| 406-246 | Blackfoot Tel. Coop. | Landline |
| 406-247 | Qwest Corporation | Landline |
| 406-248 | Qwest Corporation | Landline |
| 406-249 | Verizon Wireless | Wireless |
| 406-250 | Verizon Wireless | Wireless |
| 406-251 | Qwest Corporation | Landline |
| 406-252 | Qwest Corporation | Landline |
| 406-253 | AT&T Mobility | Wireless |
| 406-254 | Qwest Corporation | Landline |
| 406-255 | Qwest Corporation | Landline |
| 406-256 | Qwest Corporation | Landline |
| 406-257 | Centurytel Of Montana, Inc. dba Centurylink | Landline |
| 406-258 | Qwest Corporation | Landline |
| 406-259 | Qwest Corporation | Landline |
| 406-260 | AT&T Mobility | Wireless |
| 406-261 | AT&T Mobility | Wireless |
| 406-262 | Qwest Corporation | Landline |
| 406-263 | Sagebrush Cellular | Wireless |
| 406-264 | 3 Rivers Tel. Coop. | Landline |
| 406-265 | Qwest Corporation | Landline |
| 406-266 | Qwest Corporation | Landline |
| 406-267 | Southern Montana Tel. | Landline |
| 406-268 | Qwest Corporation | Landline |
| 406-269 | AT&T Mobility | Wireless |
| 406-270 | Verizon Wireless | Wireless |
| 406-271 | 3 Rivers Telephone Cooperative | Landline |
| 406-272 | Onvoy (Sinch) | VoIP |
| 406-273 | Qwest Corporation | Landline |
| 406-274 | AT&T (Teleport Communications) | Landline |
| 406-275 | Ronan Tel. | Landline |
| 406-276 | 3 Rivers Tel. Coop. | Landline |
| 406-277 | 3 Rivers Tel. Coop. | Landline |
| 406-278 | Qwest Corporation | Landline |
| 406-279 | 3 Rivers Tel. Coop. | Landline |
| 406-280 | AT&T Mobility | Wireless |
| 406-281 | AT&T (Teleport Communications) | Landline |
| 406-282 | Qwest Corporation | Landline |
| 406-283 | Ziply Fiber Montana, LLC dba Ziply Fiber | Landline |
| 406-284 | Qwest Corporation | Landline |
| 406-285 | Qwest Corporation | Landline |
| 406-286 | Nemont Tel Coop | Landline |
| 406-287 | Qwest Corporation | Landline |
| 406-288 | Blackfoot Tel. Coop. | Landline |
| 406-289 | AT&T Mobility | Wireless |
| 406-290 | Onvoy (Sinch) | VoIP |
| 406-291 | Verizon Wireless | Wireless |
| 406-292 | Triangle Tel. Coop. Assn. | Landline |
| 406-293 | Ziply Fiber Montana, LLC dba Ziply Fiber | Landline |
| 406-294 | Allstream (Electric Lightwave) | Landline |
| 406-295 | Ziply Fiber Montana, LLC dba Ziply Fiber | Landline |
| 406-296 | Ziply Fiber Montana, LLC dba Ziply Fiber | Landline |
| 406-297 | Interbel Telephone Cooperative | Landline |
| 406-298 | Verizon Wireless | Wireless |
| 406-299 | Lumen (Level 3) | VoIP |
| 406-300 | Spectrum (Charter IP) | Landline |
| 406-301 | Verizon Wireless | Wireless |
| 406-302 | Onvoy (Sinch) | VoIP |
| 406-303 | AT&T (Teleport Communications) | Landline |
| 406-304 | T-Mobile | Wireless |
| 406-305 | AT&T Mobility | Wireless |
| 406-306 | Onvoy (Sinch) | VoIP |
| 406-307 | Spectrum (Charter IP) | Landline |
| 406-308 | Verizon Wireless | Wireless |
| 406-309 | Spectrum (Charter IP) | Landline |
| 406-310 | Blackfoot Communications | Landline |
| 406-312 | Nuso | Landline |
| 406-313 | Onvoy (Sinch) | VoIP |
| 406-314 | AT&T Mobility | Wireless |
| 406-315 | Sagebrush Cellular | Wireless |
| 406-316 | Onvoy (Sinch) | VoIP |
| 406-317 | Telnyx | Landline |
| 406-318 | Onvoy (Sinch) | VoIP |
| 406-319 | Spectrum (Charter IP) | Landline |
| 406-320 | Verizon Wireless | Wireless |
| 406-321 | AT&T Mobility | Wireless |
| 406-322 | Qwest Corporation | Landline |
| 406-323 | Mid-Rivers Tel. Coop. | Landline |
| 406-324 | Qwest Corporation | Landline |
| 406-325 | Nuso | Landline |
| 406-326 | Triangle Tel. Coop. Assn. | Landline |
| 406-327 | Qwest Corporation | Landline |
| 406-328 | Project Tel. Co. | Landline |
| 406-329 | Qwest Corporation | Landline |
| 406-330 | Spectrum (Charter IP) | Landline |
| 406-331 | Verizon Wireless | Wireless |
| 406-332 | Blackfoot Tel. Coop. | Landline |
| 406-333 | Qwest Corporation | Landline |
| 406-334 | AT&T Mobility | Wireless |
| 406-335 | Northern Tel. Coop. | Landline |
| 406-336 | Northern Tel. Coop. | Landline |
| 406-337 | Northern Tel. Coop. | Landline |
| 406-338 | Siyeh Communications | Landline |
| 406-339 | Northern Tel. Coop. | Landline |
| 406-340 | AT&T Mobility | Wireless |
| 406-341 | Onvoy (Sinch) | VoIP |
| 406-342 | Range Tel Coop | Landline |
| 406-343 | Project Tel. Co. | Landline |
| 406-344 | Verizon Wireless | Wireless |
| 406-345 | Mid-Rivers Telephone Cooperative | Landline |
| 406-346 | Range Telephone Cooperative | Landline |
| 406-347 | Range Tel Coop | Landline |
| 406-348 | Project Tel. Co. | Landline |
| 406-349 | Blackfoot Tel. Coop. | Landline |
| 406-350 | AT&T Mobility | Wireless |
| 406-351 | Verizon Wireless | Wireless |
| 406-352 | Triangle Tel. Coop. Assn. | Landline |
| 406-353 | Triangle Tel. Coop. Assn. | Landline |
| 406-354 | Mid-Rivers Tel. Coop. | Landline |
| 406-355 | Triangle Tel. Coop. Assn. | Landline |
| 406-356 | Qwest Corporation | Landline |
| 406-357 | Triangle Tel. Coop. Assn. | Landline |
| 406-358 | Mid-Rivers Tel. Coop. | Landline |
| 406-359 | Qwest Corporation | Landline |
| 406-360 | Verizon Wireless | Wireless |
| 406-361 | Verizon Wireless | Wireless |
| 406-362 | Lincoln Tel. Co. | Landline |
| 406-363 | Qwest Corporation | Landline |
| 406-364 | Nemont Tel Coop | Landline |
| 406-365 | Qwest Corporation | Landline |
| 406-366 | Verizon Wireless | Wireless |
| 406-367 | Nemont Tel Coop | Landline |
| 406-368 | Lincoln Tel. Co. | Landline |
| 406-369 | AT&T Mobility | Wireless |
| 406-370 | Verizon Wireless | Wireless |
| 406-371 | Verizon Business (MCImetro) | Landline |
| 406-372 | Triangle Tel. Coop. Assn. | Landline |
| 406-373 | Qwest Corporation | Landline |
| 406-374 | Triangle Tel. Coop. Assn. | Landline |
| 406-375 | Qwest Corporation | Landline |
| 406-376 | Triangle Tel. Coop. Assn. | Landline |
| 406-377 | Mid-Rivers Telephone Cooperative | Landline |
| 406-378 | Triangle Tel. Coop. Assn. | Landline |
| 406-379 | Triangle Tel. Coop. Assn. | Landline |
| 406-380 | Verizon Wireless | Wireless |
| 406-381 | Verizon Wireless | Wireless |
| 406-382 | AT&T Mobility | Wireless |
| 406-383 | Triangle Tel. Coop. Assn. | Landline |
| 406-384 | Allstream (Electric Lightwave) | Landline |
| 406-385 | Nemont Tel Coop | Landline |
| 406-386 | Triangle Tel. Coop. Assn. | Landline |
| 406-387 | Centurytel Of Montana, Inc. dba Centurylink | Landline |
| 406-388 | Qwest Corporation | Landline |
| 406-389 | Lumen (CenturyLink) | Landline |
| 406-390 | Verizon Wireless | Wireless |
| 406-391 | AT&T Mobility | Wireless |
| 406-392 | Nemont Tel Coop | Landline |
| 406-393 | Spectrum (Charter IP) | Landline |
| 406-394 | Triangle Tel. Coop. Assn. | Landline |
| 406-395 | Triangle Tel. Coop. Assn. | Landline |
| 406-396 | Verizon Wireless | Wireless |
| 406-397 | Triangle Tel. Coop. Assn. | Landline |
| 406-398 | Triangle Tel. Coop. Assn. | Landline |
| 406-399 | Verizon Wireless | Wireless |
| 406-400 | Triangle Communication System, Inc. - Mt | Landline |
| 406-401 | Csc Wireless | Wireless |
| 406-402 | T-Mobile | Wireless |
| 406-403 | Onvoy (Sinch) | VoIP |
| 406-404 | Spectrum (Charter IP) | Landline |
| 406-405 | Onvoy (Sinch) | VoIP |
| 406-406 | Livewire Telecom | Landline |
| 406-407 | Verizon Wireless | Wireless |
| 406-408 | Verizon Wireless | Wireless |
| 406-409 | Csc Wireless | Wireless |
| 406-410 | Verizon Wireless | Wireless |
| 406-412 | Onvoy (Sinch) | VoIP |
| 406-413 | Qwest Corporation | Landline |
| 406-414 | Qwest Corporation | Landline |
| 406-415 | Spectrum (Charter IP) | Landline |
| 406-416 | Onvoy (Sinch) | VoIP |
| 406-417 | AT&T Mobility | Wireless |
| 406-418 | Onvoy (Sinch) | VoIP |
| 406-419 | Onvoy (Sinch) | VoIP |
| 406-420 | Spectrum (Charter IP) | Landline |
| 406-421 | Range Tel Coop | Landline |
| 406-422 | Spectrum (Charter IP) | Landline |
| 406-423 | Triangle Tel. Coop. Assn. | Landline |
| 406-424 | 3 Rivers Telephone Cooperative | Landline |
| 406-425 | Verizon Wireless | Wireless |
| 406-426 | Verizon Wireless | Wireless |
| 406-427 | Range Tel Coop | Landline |
| 406-428 | Mid-Rivers Tel. Coop. | Landline |
| 406-429 | Mid-Rivers Tel. Coop. | Landline |
| 406-430 | Onvoy (Sinch) | VoIP |
| 406-431 | Verizon Wireless | Wireless |
| 406-432 | Northern Tel. Coop. | Landline |
| 406-433 | Mid-Rivers Telephone Cooperative | Landline |
| 406-434 | Qwest Corporation | Landline |
| 406-435 | Tds Metrocom | Landline |
| 406-436 | Range Tel Coop | Landline |
| 406-437 | Verizon Business (MCImetro) | Landline |
| 406-438 | Verizon Wireless | Wireless |
| 406-439 | AT&T Mobility | Wireless |
| 406-440 | 3 Rivers Telephone Cooperative | Landline |
| 406-441 | Qwest Corporation | Landline |
| 406-442 | Qwest Corporation | Landline |
| 406-443 | Qwest Corporation | Landline |
| 406-444 | Qwest Corporation | Landline |
| 406-445 | Qwest Corporation | Landline |
| 406-446 | Qwest Corporation | Landline |
| 406-447 | Qwest Corporation | Landline |
| 406-448 | Nemont Tel Coop | Landline |
| 406-449 | Qwest Corporation | Landline |
| 406-450 | Verizon Wireless | Wireless |
| 406-451 | T-Mobile | Wireless |
| 406-452 | Qwest Corporation | Landline |
| 406-453 | Qwest Corporation | Landline |
| 406-454 | Qwest Corporation | Landline |
| 406-455 | Qwest Corporation | Landline |
| 406-456 | Triangle Tel. Coop. Assn. | Landline |
| 406-457 | Qwest Corporation | Landline |
| 406-458 | Qwest Corporation | Landline |
| 406-459 | Verizon Wireless | Wireless |
| 406-460 | AT&T Mobility | Wireless |
| 406-461 | Verizon Wireless | Wireless |
| 406-462 | Triangle Tel. Coop. Assn. | Landline |
| 406-463 | 3 Rivers Tel. Coop. | Landline |
| 406-464 | Mid-Rivers Tel. Coop. | Landline |
| 406-465 | Verizon Wireless | Wireless |
| 406-466 | 3 Rivers Tel. Coop. | Landline |
| 406-467 | 3 Rivers Tel. Coop. | Landline |
| 406-468 | Qwest Corporation | Landline |
| 406-469 | 3 Rivers Tel. Coop. | Landline |
| 406-470 | Verizon Wireless | Wireless |
| 406-471 | Verizon Wireless | Wireless |
| 406-472 | 3 Rivers Tel. Coop. | Landline |
| 406-473 | Triangle Tel. Coop. Assn. | Landline |
| 406-474 | Nemont Tel Coop | Landline |
| 406-475 | Qwest Corporation | Landline |
| 406-476 | Qwest Corporation | Landline |
| 406-477 | Range Tel Coop | Landline |
| 406-478 | Verizon Wireless | Wireless |
| 406-479 | Verizon Wireless | Wireless |
| 406-480 | Verizon Wireless | Wireless |
| 406-481 | Verizon Wireless | Wireless |
| 406-482 | Qwest Corporation | Landline |
| 406-483 | Nemont Tel Coop | Landline |
| 406-484 | Tri-County Tel. Assn. | Landline |
| 406-485 | Mid-Rivers Tel. Coop. | Landline |
| 406-486 | Mid-Rivers Tel. Coop. | Landline |
| 406-487 | Nemont Tel Coop | Landline |
| 406-488 | Mid-Rivers Telephone Cooperative | Landline |
| 406-489 | AT&T Mobility | Wireless |
| 406-490 | Verizon Wireless | Wireless |
| 406-491 | AT&T Mobility | Wireless |
| 406-492 | Blackfoot Tel. Coop. | Landline |
| 406-493 | Spectrum (Charter IP) | Landline |
| 406-494 | Qwest Corporation | Landline |
| 406-495 | Qwest Corporation | Landline |
| 406-496 | Qwest Corporation | Landline |
| 406-497 | Qwest Corporation | Landline |
| 406-498 | Verizon Wireless | Wireless |
| 406-499 | AT&T Mobility | Wireless |
| 406-500 | FracTEL | Landline |
| 406-501 | Onvoy (Sinch) | VoIP |
| 406-502 | Spectrum (Charter IP) | Landline |
| 406-503 | Comcast (Xfinity Voice) | VoIP |
| 406-504 | Lumen (Level 3) | VoIP |
| 406-505 | AT&T Mobility | Wireless |
| 406-506 | Hd Carrier | Landline |
| 406-507 | Lumen (Level 3) | VoIP |
| 406-508 | Lumen (Level 3) | VoIP |
| 406-509 | Exiant Communications | Landline |
| 406-510 | Onvoy (Sinch) | VoIP |
| 406-512 | Lumen (Level 3) | VoIP |
| 406-513 | Spectrum (Charter IP) | Landline |
| 406-514 | AT&T Mobility | Wireless |
| 406-515 | AT&T Mobility | Wireless |
| 406-516 | Boost Mobile | Landline |
| 406-517 | Verizon Wireless | Wireless |
| 406-518 | Onvoy (Sinch) | VoIP |
| 406-519 | Ip Horizon | Landline |
| 406-520 | Hd Carrier | Landline |
| 406-521 | Verizon Wireless | Wireless |
| 406-522 | Qwest Corporation | Landline |
| 406-523 | Qwest Corporation | Landline |
| 406-524 | Nemont Tel Coop | Landline |
| 406-525 | Mid-Rivers Tel. Coop. | Landline |
| 406-526 | Nemont Tel Coop | Landline |
| 406-527 | Nemont Tel Coop | Landline |
| 406-528 | Ronan Tel. | Landline |
| 406-529 | Verizon Wireless | Wireless |
| 406-530 | Lumen (Level 3) | VoIP |
| 406-531 | Verizon Wireless | Wireless |
| 406-532 | Blackfoot Communications | Landline |
| 406-533 | Qwest Corporation | Landline |
| 406-534 | Spectrum (Charter IP) | Landline |
| 406-535 | Mid-Rivers Telephone Cooperative | Landline |
| 406-536 | AT&T Mobility | Wireless |
| 406-537 | Triangle Tel. Coop. Assn. | Landline |
| 406-538 | Qwest Corporation | Landline |
| 406-539 | AT&T Mobility | Wireless |
| 406-540 | Onvoy (Sinch) | VoIP |
| 406-541 | Blackfoot Communications | Landline |
| 406-542 | Qwest Corporation | Landline |
| 406-543 | Qwest Corporation | Landline |
| 406-544 | Verizon Wireless | Wireless |
| 406-545 | Lumen (Level 3) | VoIP |
| 406-546 | Verizon Wireless | Wireless |
| 406-547 | Triangle Tel. Coop. Assn. | Landline |
| 406-548 | Qwest Corporation | Landline |
| 406-549 | Qwest Corporation | Landline |
| 406-550 | Nuso | Landline |
| 406-551 | Lumen (Level 3) | VoIP |
| 406-552 | Lumen (Level 3) | VoIP |
| 406-553 | AT&T Mobility | Wireless |
| 406-554 | Range Tel Coop | Landline |
| 406-556 | Qwest Corporation | Landline |
| 406-557 | Mid-Rivers Tel. Coop. | Landline |
| 406-558 | Verizon Business (MCImetro) | Landline |
| 406-559 | Verizon Wireless | Wireless |
| 406-560 | Verizon Wireless | Wireless |
| 406-561 | T-Mobile | Wireless |
| 406-562 | 3 Rivers Tel. Coop. | Landline |
| 406-563 | Qwest Corporation | Landline |
| 406-564 | Lumen (Level 3) | VoIP |
| 406-565 | Lumen (Level 3) | VoIP |
| 406-566 | Triangle Tel. Coop. Assn. | Landline |
| 406-567 | Triangle Tel. Coop. Assn. | Landline |
| 406-568 | Mid-Rivers Tel. Coop. | Landline |
| 406-569 | Reservation Tel. Coop. | Landline |
| 406-570 | Verizon Wireless | Wireless |
| 406-571 | Spectrum (Charter IP) | Landline |
| 406-572 | Triangle Tel. Coop. Assn. | Landline |
| 406-573 | Siyeh Communications | Landline |
| 406-574 | Qwest Corporation | Landline |
| 406-575 | Mid-Rivers Tel. Coop. | Landline |
| 406-576 | AT&T Mobility | Wireless |
| 406-577 | Onvoy (Sinch) | VoIP |
| 406-578 | Qwest Corporation | Landline |
| 406-579 | Verizon Wireless | Wireless |
| 406-580 | AT&T Mobility | Wireless |
| 406-581 | Verizon Wireless | Wireless |
| 406-582 | Qwest Corporation | Landline |
| 406-583 | Mid-Rivers Tel. Coop. | Landline |
| 406-584 | Mid-Rivers Tel. Coop. | Landline |
| 406-585 | Qwest Corporation | Landline |
| 406-586 | Qwest Corporation | Landline |
| 406-587 | Qwest Corporation | Landline |
| 406-588 | Mid-Rivers Tel. Coop. | Landline |
| 406-589 | T-Mobile | Wireless |
| 406-590 | Verizon Wireless | Wireless |
| 406-591 | Verizon Wireless | Wireless |
| 406-592 | Range Tel Coop | Landline |
| 406-593 | AT&T Mobility | Wireless |
| 406-594 | Verizon Wireless | Wireless |
| 406-595 | Verizon Wireless | Wireless |
| 406-596 | AT&T Mobility | Wireless |
| 406-597 | AT&T Mobility | Wireless |
| 406-598 | Verizon Wireless | Wireless |
| 406-599 | Verizon Wireless | Wireless |
| 406-600 | Verizon Wireless | Wireless |
| 406-601 | Blackfoot Communications | Landline |
| 406-602 | Blackfoot Communications | Landline |
| 406-603 | Blackfoot Communications | Landline |
| 406-604 | Blackfoot Communications | Landline |
| 406-605 | Telnyx | Landline |
| 406-606 | Tri Tel | Landline |
| 406-607 | Blackfoot Communications | Landline |
| 406-608 | Ip Horizon | Landline |
| 406-609 | AT&T Mobility | Wireless |
| 406-610 | AT&T Mobility | Wireless |
| 406-612 | Onvoy (Sinch) | VoIP |
| 406-613 | Lumen (CenturyLink) | Landline |
| 406-614 | Onvoy (Sinch) | VoIP |
| 406-615 | Western Montana Communitytel | Landline |
| 406-616 | Onvoy (Sinch) | VoIP |
| 406-617 | AT&T Mobility | Wireless |
| 406-618 | Tds Metrocom | Landline |
| 406-620 | Sagebrush Cellular | Wireless |
| 406-621 | Verizon Wireless | Wireless |
| 406-622 | Triangle Tel. Coop. Assn. | Landline |
| 406-623 | Commio | Landline |
| 406-624 | Montana Opticom | Landline |
| 406-625 | AT&T Local | Landline |
| 406-626 | Qwest Corporation | Landline |
| 406-627 | 3 Rivers Tel. Coop. | Landline |
| 406-628 | Qwest Corporation | Landline |
| 406-629 | Onvoy (Sinch) | VoIP |
| 406-630 | Lumen (Level 3) | VoIP |
| 406-631 | Onvoy (Sinch) | VoIP |
| 406-632 | Triangle Tel. Coop. Assn. | Landline |
| 406-633 | Qwest Corporation | Landline |
| 406-634 | Onvoy (Sinch) | VoIP |
| 406-635 | Mid-Rivers Tel. Coop. | Landline |
| 406-636 | Mid-Rivers Tel. Coop. | Landline |
| 406-637 | Qwest Corporation | Landline |
| 406-638 | Project Tel. Co. | Landline |
| 406-639 | Project Tel. Co. | Landline |
| 406-640 | Verizon Wireless | Wireless |
| 406-641 | Verizon Wireless | Wireless |
| 406-642 | Qwest Corporation | Landline |
| 406-643 | Onvoy (Sinch) | VoIP |
| 406-644 | Blackfoot Tel. Coop. | Landline |
| 406-645 | Onvoy (Sinch) | VoIP |
| 406-646 | Qwest Corporation | Landline |
| 406-647 | Bandwidth.com | VoIP |
| 406-648 | Nemont Tel Coop | Landline |
| 406-649 | Blackfoot Tel. Coop. | Landline |
| 406-650 | Sagebrush Cellular | Wireless |
| 406-651 | Qwest Corporation | Landline |
| 406-652 | Qwest Corporation | Landline |
| 406-653 | Nemont Tel Coop | Landline |
| 406-654 | Triangle Tel. Coop. Assn. | Landline |
| 406-655 | Qwest Corporation | Landline |
| 406-656 | Qwest Corporation | Landline |
| 406-657 | Qwest Corporation | Landline |
| 406-658 | Triangle Tel. Coop. Assn. | Landline |
| 406-659 | Qwest Corporation | Landline |
| 406-660 | AT&T Mobility | Wireless |
| 406-661 | Verizon Wireless | Wireless |
| 406-662 | Qwest Corporation | Landline |
| 406-663 | Triangle Tel. Coop. Assn. | Landline |
| 406-664 | Project Tel. Co. | Landline |
| 406-665 | Qwest Corporation | Landline |
| 406-666 | Project Tel. Co. | Landline |
| 406-667 | Triangle Tel. Coop. Assn. | Landline |
| 406-668 | Qwest Corporation | Landline |
| 406-669 | Triangle Tel. Coop. Assn. | Landline |
| 406-670 | Verizon Wireless | Wireless |
| 406-671 | Verizon Wireless | Wireless |
| 406-672 | Verizon Wireless | Wireless |
| 406-673 | Triangle Tel. Coop. Assn. | Landline |
| 406-674 | Triangle Tel. Coop. Assn. | Landline |
| 406-675 | Ronan Tel. | Landline |
| 406-676 | Ronan Tel. | Landline |
| 406-677 | Blackfoot Tel. Coop. | Landline |
| 406-678 | Blackfoot Tel. Coop. | Landline |
| 406-679 | Nuso | Landline |
| 406-680 | Sagebrush Cellular | Wireless |
| 406-681 | Southern Montana Tel. | Landline |
| 406-682 | 3 Rivers Tel. Coop. | Landline |
| 406-683 | Qwest Corporation | Landline |
| 406-684 | 3 Rivers Tel. Coop. | Landline |
| 406-685 | 3 Rivers Tel. Coop. | Landline |
| 406-686 | Qwest Corporation | Landline |
| 406-687 | Mid-Rivers Tel. Coop. | Landline |
| 406-688 | Sagebrush Cellular | Wireless |
| 406-689 | Southern Montana Tel. | Landline |
| 406-690 | Verizon Wireless | Wireless |
| 406-691 | AT&T Mobility | Wireless |
| 406-692 | Onvoy (Sinch) | VoIP |
| 406-693 | Qwest Corporation | Landline |
| 406-694 | Verizon Wireless | Wireless |
| 406-695 | Nemont Tel Coop | Landline |
| 406-696 | Verizon Wireless | Wireless |
| 406-697 | Verizon Wireless | Wireless |
| 406-698 | Verizon Wireless | Wireless |
| 406-699 | AT&T Mobility | Wireless |
| 406-702 | Spectrum (Charter IP) | Landline |
| 406-703 | Telnyx | Landline |
| 406-707 | Terra Nova Telecom | Landline |
| 406-708 | Wide Voice | Landline |
| 406-709 | Spectrum (Charter IP) | Landline |
| 406-717 | Vonage | VoIP |
| 406-718 | Twilio | VoIP |
| 406-719 | Twilio | VoIP |
| 406-720 | Verizon Wireless | Wireless |
| 406-721 | Qwest Corporation | Landline |
| 406-722 | Blackfoot Tel. Coop. | Landline |
| 406-723 | Qwest Corporation | Landline |
| 406-724 | Nemont Tel Coop | Landline |
| 406-725 | Nemont Tel Coop | Landline |
| 406-726 | Blackfoot Tel. Coop. | Landline |
| 406-727 | Qwest Corporation | Landline |
| 406-728 | Qwest Corporation | Landline |
| 406-729 | Lumen (CenturyLink) | Landline |
| 406-730 | Spectrum (Charter IP) | Landline |
| 406-731 | Wavenation | Landline |
| 406-732 | Qwest Corporation | Landline |
| 406-733 | 3 Rivers Tel. Coop. | Landline |
| 406-734 | 3 Rivers Tel. Coop. | Landline |
| 406-735 | 3 Rivers Tel. Coop. | Landline |
| 406-736 | 3 Rivers Tel. Coop. | Landline |
| 406-737 | Triangle Tel. Coop. Assn. | Landline |
| 406-738 | 3 Rivers Tel. Coop. | Landline |
| 406-739 | Triangle Tel. Coop. Assn. | Landline |
| 406-740 | Verizon Wireless | Wireless |
| 406-741 | Hot Springs Tel. | Landline |
| 406-742 | Mid-Rivers Telephone Cooperative | Landline |
| 406-743 | AT&T Mobility | Wireless |
| 406-744 | Western Montana Communitytel | Landline |
| 406-745 | Blackfoot Tel. Coop. | Landline |
| 406-746 | Nemont Tel Coop | Landline |
| 406-747 | Qwest Corporation | Landline |
| 406-748 | Qwest Corporation | Landline |
| 406-749 | AT&T Mobility | Wireless |
| 406-750 | Verizon Wireless | Wireless |
| 406-751 | Centurytel Of Montana, Inc. dba Centurylink | Landline |
| 406-752 | Centurytel Of Montana, Inc. dba Centurylink | Landline |
| 406-753 | 3 Rivers Tel. Coop. | Landline |
| 406-754 | Blackfoot Tel. Coop. | Landline |
| 406-755 | Centurytel Of Montana, Inc. dba Centurylink | Landline |
| 406-756 | Centurytel Of Montana, Inc. dba Centurylink | Landline |
| 406-757 | Range Tel Coop | Landline |
| 406-758 | Centurytel Of Montana, Inc. dba Centurylink | Landline |
| 406-759 | Triangle Tel. Coop. Assn. | Landline |
| 406-760 | Vonage | VoIP |
| 406-761 | Qwest Corporation | Landline |
| 406-762 | Nemont Tel Coop | Landline |
| 406-763 | Qwest Corporation | Landline |
| 406-764 | Tri-County Tel. Assn. | Landline |
| 406-765 | Nemont Tel Coop | Landline |
| 406-766 | Nemont Tel Coop | Landline |
| 406-767 | Rt Communications | Landline |
| 406-768 | Nemont Tel Coop | Landline |
| 406-769 | Nemont Tel Coop | Landline |
| 406-770 | Comcast (Xfinity Voice) | VoIP |
| 406-771 | Qwest Corporation | Landline |
| 406-772 | Mid-Rivers Tel. Coop. | Landline |
| 406-773 | Mid-Rivers Tel. Coop. | Landline |
| 406-774 | Mid-Rivers Tel. Coop. | Landline |
| 406-775 | Mid-Rivers Tel. Coop. | Landline |
| 406-776 | Mid-Rivers Tel. Coop. | Landline |
| 406-777 | Qwest Corporation | Landline |
| 406-778 | Mid-Rivers Tel. Coop. | Landline |
| 406-779 | Nemont Tel Coop | Landline |
| 406-780 | Verizon Wireless | Wireless |
| 406-781 | Verizon Wireless | Wireless |
| 406-782 | Qwest Corporation | Landline |
| 406-783 | Nemont Tel Coop | Landline |
| 406-784 | Range Tel Coop | Landline |
| 406-785 | Nemont Tel Coop | Landline |
| 406-786 | Nemont Tel Coop | Landline |
| 406-787 | Nemont Tel Coop | Landline |
| 406-788 | Verizon Wireless | Wireless |
| 406-789 | Nemont Tel Coop | Landline |
| 406-790 | AT&T Mobility | Wireless |
| 406-791 | Qwest Corporation | Landline |
| 406-792 | Onvoy (Sinch) | VoIP |
| 406-793 | Blackfoot Tel. Coop. | Landline |
| 406-794 | Onvoy (Sinch) | VoIP |
| 406-795 | Qwest Corporation | Landline |
| 406-796 | Mid-Rivers Telephone Cooperative | Landline |
| 406-797 | Qwest Corporation | Landline |
| 406-798 | Mid-Rivers Tel. Coop. | Landline |
| 406-799 | AT&T Mobility | Wireless |
| 406-800 | Onvoy (Sinch) | VoIP |
| 406-802 | Verizon Wireless | Wireless |
| 406-804 | Onvoy (Sinch) | VoIP |
| 406-807 | Onvoy (Sinch) | VoIP |
| 406-808 | Lumen (CenturyLink) | Landline |
| 406-812 | Onvoy (Sinch) | VoIP |
| 406-813 | Verizon Business (MCImetro) | Landline |
| 406-815 | AT&T Local | Landline |
| 406-818 | AT&T Mobility | Wireless |
| 406-820 | Onvoy (Sinch) | VoIP |
| 406-821 | Qwest Corporation | Landline |
| 406-822 | Blackfoot Tel. Coop. | Landline |
| 406-823 | Qwest Corporation | Landline |
| 406-824 | AT&T Mobility | Wireless |
| 406-825 | Blackfoot Tel. Coop. | Landline |
| 406-826 | Blackfoot Tel. Coop. | Landline |
| 406-827 | Blackfoot Tel. Coop. | Landline |
| 406-828 | Range Tel Coop | Landline |
| 406-829 | Qwest Corporation | Landline |
| 406-830 | Spectrum (Charter IP) | Landline |
| 406-831 | Telnyx | Landline |
| 406-832 | Southern Montana Tel. | Landline |
| 406-833 | Verizon Wireless | Wireless |
| 406-834 | Southern Montana Tel. | Landline |
| 406-835 | 3 Rivers Tel. Coop. | Landline |
| 406-836 | Onvoy (Sinch) | VoIP |
| 406-837 | Centurytel Of Montana, Inc. dba Centurylink | Landline |
| 406-838 | Qwest Corporation | Landline |
| 406-839 | Spectrum (Charter IP) | Landline |
| 406-840 | Onvoy (Sinch) | VoIP |
| 406-841 | Qwest Corporation | Landline |
| 406-842 | 3 Rivers Tel. Coop. | Landline |
| 406-843 | 3 Rivers Tel. Coop. | Landline |
| 406-844 | Centurytel Of Montana, Inc. dba Centurylink | Landline |
| 406-845 | Spectrum (Charter IP) | Landline |
| 406-846 | Qwest Corporation | Landline |
| 406-847 | Blackfoot Tel. Coop. | Landline |
| 406-848 | Qwest Corporation | Landline |
| 406-849 | Centurytel Of Montana, Inc. dba Centurylink | Landline |
| 406-850 | AT&T Mobility | Wireless |
| 406-851 | AT&T Mobility | Wireless |
| 406-852 | Verizon Wireless | Wireless |
| 406-853 | Verizon Wireless | Wireless |
| 406-854 | Centurytel Of Montana, Inc. dba Centurylink | Landline |
| 406-855 | AT&T Mobility | Wireless |
| 406-856 | Mid-Rivers Tel. Coop. | Landline |
| 406-857 | Centurytel Of Montana, Inc. dba Centurylink | Landline |
| 406-858 | Boost Mobile | Landline |
| 406-859 | Blackfoot Tel. Coop. | Landline |
| 406-860 | AT&T Mobility | Wireless |
| 406-861 | AT&T Mobility | Wireless |
| 406-862 | Centurytel Of Montana, Inc. dba Centurylink | Landline |
| 406-863 | Centurytel Of Montana, Inc. dba Centurylink | Landline |
| 406-864 | Blackfoot Tel. Coop. | Landline |
| 406-865 | Verizon Wireless | Wireless |
| 406-866 | Qwest Corporation | Landline |
| 406-867 | Wavenation | Landline |
| 406-868 | Verizon Wireless | Wireless |
| 406-869 | Allstream (Electric Lightwave) | Landline |
| 406-870 | Bandwidth.com | VoIP |
| 406-871 | Verizon Wireless | Wireless |
| 406-872 | Western Montana Communitytel | Landline |
| 406-873 | Qwest Corporation | Landline |
| 406-874 | Mid-Rivers Telephone Cooperative | Landline |
| 406-875 | Project Tel. Co. | Landline |
| 406-876 | Verizon Wireless | Wireless |
| 406-877 | Reservation Tel. Coop. | Landline |
| 406-878 | Nuso | Landline |
| 406-879 | AT&T Mobility | Wireless |
| 406-880 | Verizon Wireless | Wireless |
| 406-881 | Centurytel Of Montana, Inc. dba Centurylink | Landline |
| 406-882 | Interbel Tel. Coop. | Landline |
| 406-883 | Centurytel Of Montana, Inc. dba Centurylink | Landline |
| 406-884 | Centurytel Of Montana, Inc. dba Centurylink | Landline |
| 406-885 | Verizon Wireless | Wireless |
| 406-886 | Centurytel Of Montana, Inc. dba Centurylink | Landline |
| 406-887 | Centurytel Of Montana, Inc. dba Centurylink | Landline |
| 406-888 | Qwest Corporation | Landline |
| 406-889 | Interbel Tel. Coop. | Landline |
| 406-890 | Spectrum (Charter IP) | Landline |
| 406-891 | AT&T Mobility | Wireless |
| 406-892 | Centurytel Of Montana, Inc. dba Centurylink | Landline |
| 406-893 | Nemont Tel Coop | Landline |
| 406-894 | Commio | Landline |
| 406-895 | Nemont Tel Coop | Landline |
| 406-896 | Qwest Corporation | Landline |
| 406-897 | Spectrum (Charter IP) | Landline |
| 406-898 | Spectrum (Charter IP) | Landline |
| 406-899 | AT&T Mobility | Wireless |
| 406-900 | Lumen (Level 3) | VoIP |
| 406-901 | Onvoy Spectrum (Sinch) | VoIP |
| 406-902 | Lumen (Level 3) | VoIP |
| 406-905 | Onvoy (Sinch) | VoIP |
| 406-909 | Verizon Wireless | Wireless |
| 406-913 | Verizon Wireless | Wireless |
| 406-914 | Verizon Wireless | Wireless |
| 406-915 | Verizon Wireless | Wireless |
| 406-916 | T-Mobile | Wireless |
| 406-918 | AT&T Mobility | Wireless |
| 406-919 | Terra Nova Telecom | Landline |
| 406-920 | Verizon Wireless | Wireless |
| 406-922 | Allstream (Electric Lightwave) | Landline |
| 406-923 | Commio | Landline |
| 406-924 | Lumen (Level 3) | VoIP |
| 406-925 | Verizon Wireless | Wireless |
| 406-926 | Spectrum (Charter IP) | Landline |
| 406-927 | AT&T Mobility | Wireless |
| 406-928 | Verizon Wireless | Wireless |
| 406-929 | Onvoy (Sinch) | VoIP |
| 406-930 | Verizon Wireless | Wireless |
| 406-931 | Verizon Wireless | Wireless |
| 406-932 | Triangle Tel. Coop. Assn. | Landline |
| 406-933 | Qwest Corporation | Landline |
| 406-934 | Wide Voice | Landline |
| 406-935 | Verizon Wireless | Wireless |
| 406-936 | Bandwidth.com | VoIP |
| 406-937 | Northern Tel. Coop. | Landline |
| 406-938 | Verizon Wireless | Wireless |
| 406-939 | Verizon Wireless | Wireless |
| 406-940 | AT&T Mobility | Wireless |
| 406-941 | Verizon Wireless | Wireless |
| 406-942 | Verizon Wireless | Wireless |
| 406-943 | Lumen (Level 3) | VoIP |
| 406-944 | Lumen (Level 3) | VoIP |
| 406-945 | AT&T Mobility | Wireless |
| 406-946 | Lumen (Level 3) | VoIP |
| 406-947 | Mid-Rivers Tel. Coop. | Landline |
| 406-948 | Lumen (Level 3) | VoIP |
| 406-949 | AT&T Mobility | Wireless |
| 406-951 | AT&T Mobility | Wireless |
| 406-952 | Onvoy Spectrum (Sinch) | VoIP |
| 406-953 | Sagebrush Cellular | Wireless |
| 406-954 | Verizon Wireless | Wireless |
| 406-955 | Verizon Wireless | Wireless |
| 406-956 | AT&T Mobility | Wireless |
| 406-957 | Verizon Wireless | Wireless |
| 406-960 | Lumen (Level 3) | VoIP |
| 406-961 | Qwest Corporation | Landline |
| 406-962 | Qwest Corporation | Landline |
| 406-963 | Nemont Tel Coop | Landline |
| 406-964 | Qwest Corporation | Landline |
| 406-965 | Airus | Landline |
| 406-966 | Lumen (Level 3) | VoIP |
| 406-967 | Project Tel. Co. | Landline |
| 406-968 | Hd Carrier | Landline |
| 406-969 | Skye Telecom LLC dba Skyetel | Landline |
| 406-970 | Lumen (CenturyLink) | Landline |
| 406-971 | Verizon Wireless | Wireless |
| 406-972 | West River Cooperative Telephone Company | Landline |
| 406-973 | Verizon Wireless | Wireless |
| 406-974 | Verizon Wireless | Wireless |
| 406-975 | Verizon Wireless | Wireless |
| 406-977 | Verizon Wireless | Wireless |
| 406-978 | Verizon Wireless | Wireless |
| 406-979 | Verizon Wireless | Wireless |
| 406-980 | Verizon Wireless | Wireless |
| 406-981 | Verizon Wireless | Wireless |
| 406-982 | Centurytel Of Montana, Inc. dba Centurylink | Landline |
| 406-983 | Verizon Wireless | Wireless |
| 406-984 | Range Tel Coop | Landline |
| 406-987 | Verizon Wireless | Wireless |
| 406-988 | Lumen (Level 3) | VoIP |
| 406-989 | AT&T Mobility | Wireless |
| 406-990 | AT&T Mobility | Wireless |
| 406-991 | Onvoy (Sinch) | VoIP |
| 406-992 | Onvoy (Sinch) | VoIP |
| 406-993 | 3 Rivers Tel. Coop. | Landline |
| 406-994 | Qwest Corporation | Landline |
| 406-995 | 3 Rivers Tel. Coop. | Landline |
| 406-996 | Spectrum (Charter IP) | Landline |
| 406-997 | AT&T Local | Landline |
| 406-998 | Airus | Landline |
| 406-999 | Montana Opticom | Landline |
Line type reflects the registry assignment; ported numbers can differ. Unknown 406 number calling? ActiveArmor® screens it before you ever look it up.
Cities & Communities in and around Area Code 406
Communities the 406 serves, filtered against the numbering registry’s rate centers, with each community’s key ZIP codes and the AT&T home internet available there. Cities link to their local AT&T internet page.
| City / community | Key ZIP codes | AT&T internet |
|---|---|---|
| Alberton | 59820 | Internet Air |
| Arlee | 59821 | Internet Air |
| Belgrade | 59741 | Internet Air |
| Bigfork | 59932 | Internet Air |
| Billings | 59102, 59105, 59106 | Internet Air |
| Bozeman | 59718, 59715 | Internet Air |
| Columbia Falls | 59912, 59919 | Internet Air |
| Corvallis | 59841, 59828 | Internet Air |
| Dillon | 59725 | Check address |
| East Helena | 59635, 59623, 59625 | Internet Air |
| Eureka | 59930 | Internet Air |
| Fort Benton | 59442 | Internet Air |
| Frenchtown | 59834 | Internet Air |
| Great Falls | 59401, 59414 | Internet Air |
| Hamilton | 59841, 59840 | Internet Air |
| Havre | 59501 | Internet Air |
| Helena | 59625, 59623, 59636 | Internet Air |
| Huson | 59834 | Internet Air |
| Kalispell | 59901 | Internet Air |
| Libby | 59923 | Internet Air |
| Livingston | 59047 | Internet Air |
| Manhattan | 59741 | Internet Air |
| Miles City | 59301 | Internet Air |
| Missoula | 59801, 59812, 59802 | Internet Air |
| Pablo | 59855, 59864 | Internet Air |
| Polson | 59860, 59855 | Internet Air |
| Red Lodge | 59007 | Internet Air |
| Rexford | 59930 | Internet Air |
| Ronan | 59864, 59855 | Internet Air |
| Shepherd | 59079 | Internet Air |
| Sidney | 59270 | Internet Air |
| Superior | 59872 | Internet Air |
| Victor | 59841, 59875 | Internet Air |
| Whitefish | 59937 | Internet Air |
City list: AT&T service-area records and the public numbering registry. Key ZIPs: U.S. Census data for each community. Internet type: AT&T eligibility data, June 2026. Availability is always confirmed at your exact address.
406 Area Code Map
Area code 406 serves Billings and nearby communities in MT.
↓ Printable PDF
Open the printable 406 map (PDF) · All Montana area codes · Home internet in Billings
Counties Covered by the 406 Area Code
Counties are served in whole or in part; population is U.S. Census Bureau ACS 2023. The 406 also reaches parts of Cascade County, Lewis and Clark County, Ravalli County, Lake County, Lincoln County, Park County, Hill County, Custer County and 5 more.
The 406, explained
Area Code 406: More Than a Number in Billings
In Billings, the 406 is more than digits on a caller ID. It’s one of the original area codes of 1947, and it has meant Billings and surrounding communities ever since — 754 carrier prefixes keep its lines busy today, and an established 406 number still says you’ve been here a while.
The map tells its own story: Billings and surrounding communities, with no overlay on its territory. The area and the code are still one and the same — rare in Montana and getting rarer nationwide.
Keeping a 406 matters here. An existing 406 number ports to a new phone, a new carrier, or a new AT&T line, and stays yours anywhere in the U.S.
Need a new local number? Shop plans Keep your 406: bring it to AT&TInternet, wireless & stores in the 406
AT&T Home Internet in Area Code 406
AT&T home internet serves communities across area code 406, with AT&T Fiber where it’s built and AT&T Internet Air covering the gaps. Availability is decided address by address; every community in the table above links to its local internet page.
No data capsNo annual contractNo equipment fees
AT&T Fiber: Ltd. avail/areas. Speeds based on wired connection. Actual speeds vary. For 5-GIG, single device wired speed maximum 4.7Gbps. For more info., visit att.com/speed101. AT&T Internet Air: AT&T Internet Air not available in all areas. In rare cases, if your usage is contributing to congestion on the network, AT&T will greatly reduce your speed for a minimum of 30 min.
Pair it with wireless in an internet + wireless bundle. Run a business in the 406? AT&T Business Internet is available at many addresses.
Fiber install day in the 406Check your address ›
Moving to Area Code 406?
Set up home internet in area code 406 before the boxes arrive, and find your new community in the table above or check your exact address below.
Your number moves with you: port your 406 number from anywhere, or keep your old number when you arrive. An AT&T store nearby can handle the whole switch in one visit.
1 · Check your addressSee Fiber or Internet Air availability in seconds.
2 · Schedule for move-in dayInstall lined up before the boxes arrive.
3 · Keep your numberYour mobile number ports; your internet moves.
Get set up before move-in dayPlan your move ›
AT&T Wireless in Area Code 406
AT&T’s 5G network covers most of area code 406. ActiveArmor® spam blocking is included with every unlimited plan, your 406 number stays yours, and great cell phone deals in Billings are a tap away.
5G across the 406ActiveArmor® includedKeep your 406 number
AT&T may temporarily slow data speeds if the network is busy. 5G req’s compatible plan & device. Coverage not available everywhere. Learn more at att.com/5Gforyou.
Need a new 406 number? Ask when you activate a line, and porting an existing 406 number keeps it yours.
Stay connected across BillingsShop wireless plans ›
AT&T Stores in Area Code 406
Looking for cell phone stores in area code 406? These stores answer on 406 numbers — walk in for switching, porting, upgrades and hands-on help:
Every AT&T store in the region, company owned and authorized retailer alike, each with its own store page.
Real help from real people in BillingsFind your store ›
All AT&T Stores with 406 Numbers
Every store below answers on a 406 number. Tap any number to call.
12 AT&T stores with 406 numbers
International Calling from Area Code 406
Calling abroad from area code 406? AT&T International Calling adds discounted or unlimited rates to 200+ countries on top of your existing plan, and unlimited texting from the U.S. to 200+ destinations is already included on AT&T unlimited plans.
Where the 406 calls most:CanadaMexicoPhilippinesGermanyChina
Top places of birth among foreign-born residents of the 406’s counties, U.S. Census Bureau ACS 2023.
Calling abroad from a 406 number: dial 011 + country code + number (or just + on a mobile). Traveling abroad instead? International Day Pass® takes your talk, text and data with you for a flat daily rate.
International Calling and International Day Pass® availability, rates and included destinations vary by plan; see att.com for the current country list.
Billings calls the worldSee international plans ›
406 Area Code Quick Facts & Dialing
StateMontana
Time zoneMountain
OverlaysNonethe 406 stands alone
Established1947original code
Dialing10 digitsrequired since the 988 transition
Toll-free?Nogeographic code
Population843,000counties served, Census 2023
Largest cityBillings+33 more ›
How to dial a 406 number
| Scenario | Format | Example |
|---|---|---|
| Local call (within the region) | 406 + 7-digit number | (406) 555-0100 |
| Long distance (within the U.S.) | 1 + 406 + 7-digit number | 1 (406) 555-0100 |
| Calling 406 from another country | +1 406 + 7-digit number | +1 406 555 0100 |
| From a mobile phone | (406) + 7-digit number | (406) 555-0100 |
A Short History of Area Code 406
One of the original area codes of 1947, the 406 has served Billings and surrounding communities from the beginning. No splits or overlays have divided its territory since.
1947Assigned as one of the original 86 codes
In service since 1947, with no overlay on its territory today.
Nearby & Related Area Codes
Browse area codes by state: Montana (1) · California (41) · Texas (29) · Florida (23) · all 50 states ›
Area Code 406 FAQ
What area code is 406?
406 is the area code for Billings, Montana and the surrounding communities. It appears at the front of every local 10-digit phone number in the area.
Where is area code 406?
Area code 406 serves Billings, Montana and nearby communities including Anaconda, Arlee, Belgrade. The full city list is in the cities table above.
Why did I get a text message from a 406 number?
The most common 406 text scam opens like a wrong number (“u at home?”, “are you busy tomorrow?”) and tries to move you to WhatsApp. Don’t reply. Forward the text to 7726 (SPAM) and delete it. AT&T ActiveArmor® filters known scam senders automatically.
Who called me from area code 406?
A 406 number usually means Billings or a nearby community, but spoofing is common. This page’s prefix lookup isn’t a reverse phone lookup — it can’t name the caller, but it shows the carrier, line type and community a number was issued to, which is often enough to judge a call.
What time zone is area code 406?
Mountain time. The live local time is shown at the top of this page.
Why am I getting calls from 406 numbers?
406 is an active, legitimate Montana area code, but scammers spoof local numbers because people answer them. If there’s no voicemail, let it go. AT&T ActiveArmor® blocks and labels spam automatically, and you can report unwanted calls at reportfraud.ftc.gov. The spam report board above shows which 406 prefixes are drawing complaints right now.
Is 406 a toll-free number?
No. 406 is a geographic area code tied to Billings, Montana. Toll-free calls come from 800, 833, 844, 855, 866, 877 and 888 numbers.
When was area code 406 created?
Area code 406 entered service in 1947 and still covers Billings and the surrounding Montana communities today. The full timeline is in the history section above.
Which cities use area code 406?
The largest communities include Alberton, Arlee, Belgrade, Bigfork, Billings. The full list is in the cities table above.
Does AT&T offer service in the 406?
Yes: home internet, wireless and retail stores across the 406. Availability is checked address by address.
Can I still get a 406 number?
Yes. Carriers in Billings and across the 406 still issue 406 numbers on new lines, and you can port an existing 406 number to any carrier.
Can I keep my 406 number if I move?
Yes. Phone numbers are portable: your 406 number can move with you anywhere in the U.S., whether you stay with your carrier or switch.
Sources: city and store data from AT&T records; prefix and carrier assignments from the public numbering registry (pulled July 2026). Facts regenerate monthly.
