Who Called Me from Area Code 641?
Quick answerA 641 call usually comes from Mason City 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 641 prefixes, right on this page.
- Curious who issued a number? Every 641 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 641 prefixes this month
PrefixReported patternReport volume
(641) 631-XXXXRobocall-heavy
(641) 222-XXXXRobocall-heavy
(641) 436-XXXXRobocall-heavy
(641) 626-XXXXRobocall-heavy
(641) 837-XXXXRobocall-heavy
143 unwanted-call reports naming 641 numbers in FTC Do Not Call complaint data, July 2–17, 2026. Consumer-reported and unverified.
Block spam calls in the 641, 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 641 a Scam?
No. 641 is a legitimate Mason City area code.
It’s carved from the 515 in 2000 and serves Mason City and surrounding communities. But legitimacy of the code says nothing about any single call. Scammers spoof local numbers constantly.
The code is realSplit from the 515 in 2000; 584 assigned carrier prefixes serve it today.
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 641 numbers
The most common area code 641 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 641
Caller ID is easy to forge. Spoofing fakes the number a call displays. The real owner of that 641 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 641 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 641 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.
641 Area Code Prefix & Carrier Lookup
The three digits after the area code identify the carrier a number was issued to. All 584 assigned 641 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 641 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.
584 prefixes · updated monthly
| Prefix | Carrier | Line type |
|---|---|---|
| 641-200 | Bandwidth.com | VoIP |
| 641-201 | Metro by T-Mobile (MetroPCS) | Wireless |
| 641-202 | United States Cellular | Wireless |
| 641-203 | United States Cellular | Wireless |
| 641-204 | Metro by T-Mobile (MetroPCS) | Wireless |
| 641-205 | Local Telephone Data Services | Landline |
| 641-206 | AT&T Mobility | Wireless |
| 641-207 | Local Telephone Data Services | Landline |
| 641-208 | Verizon Wireless | Wireless |
| 641-209 | Local Telephone Data Services | Landline |
| 641-210 | T-Mobile | Wireless |
| 641-212 | Windstream | Landline |
| 641-213 | Farmers Tel. | Landline |
| 641-214 | Verizon Wireless | Wireless |
| 641-215 | Telnyx | Landline |
| 641-216 | United States Cellular | Wireless |
| 641-217 | Windstream | Landline |
| 641-218 | United States Cellular | Wireless |
| 641-219 | Verizon Wireless | Wireless |
| 641-220 | Verizon Wireless | Wireless |
| 641-221 | United States Cellular | Wireless |
| 641-222 | FracTEL | Landline |
| 641-223 | Windstream | Landline |
| 641-224 | Local Telephone Data Services | Landline |
| 641-225 | Local Telephone Data Services | Landline |
| 641-226 | AT&T Mobility | Wireless |
| 641-227 | Partner Communications Cooperative | Landline |
| 641-228 | Qwest Corporation | Landline |
| 641-229 | Verizon Wireless | Wireless |
| 641-230 | AT&T Mobility | Wireless |
| 641-231 | Verizon Wireless | Wireless |
| 641-232 | AT&T Mobility | Wireless |
| 641-233 | T-Mobile | Wireless |
| 641-234 | Iowa Rsa 2 Limited Partnership dba Chat Mobility | Wireless |
| 641-235 | Farmers Tel. | Landline |
| 641-236 | Windstream | Landline |
| 641-237 | Farmers Tel. | Landline |
| 641-238 | Onvoy (Sinch) | VoIP |
| 641-239 | AT&T Mobility | Wireless |
| 641-240 | AT&T Mobility | Wireless |
| 641-241 | AT&T Mobility | Wireless |
| 641-242 | Mcc Telephony Of Iowa | Landline |
| 641-243 | Lumen (Level 3) | VoIP |
| 641-244 | AT&T Mobility | Wireless |
| 641-245 | AT&T Mobility | Wireless |
| 641-246 | AT&T Mobility | Wireless |
| 641-247 | United States Cellular | Wireless |
| 641-248 | AT&T Mobility | Wireless |
| 641-249 | AT&T Mobility | Wireless |
| 641-250 | Lumen (Level 3) | VoIP |
| 641-251 | T-Mobile | Wireless |
| 641-252 | AT&T Mobility | Wireless |
| 641-253 | AT&T Mobility | Wireless |
| 641-254 | Lumen (Level 3) | VoIP |
| 641-255 | T-Mobile | Wireless |
| 641-256 | AT&T Mobility | Wireless |
| 641-257 | Qwest Corporation | Landline |
| 641-258 | Ton80 Communications | Landline |
| 641-259 | Windstream | Landline |
| 641-260 | Verizon Wireless | Wireless |
| 641-261 | T-Mobile | Wireless |
| 641-262 | Farmers Tel. | Landline |
| 641-263 | Aureon Communications | Landline |
| 641-264 | Farmers Tel. | Landline |
| 641-265 | Onvoy Spectrum (Sinch) | VoIP |
| 641-266 | Ton80 Communications | Landline |
| 641-267 | Onvoy Spectrum (Sinch) | VoIP |
| 641-268 | Aureon Communications | Landline |
| 641-269 | Windstream | Landline |
| 641-270 | Onvoy Spectrum (Sinch) | VoIP |
| 641-271 | Onvoy Spectrum (Sinch) | VoIP |
| 641-272 | Ton80 Communications | Landline |
| 641-273 | Onvoy Spectrum (Sinch) | VoIP |
| 641-274 | AT&T Mobility | Wireless |
| 641-275 | AT&T Mobility | Wireless |
| 641-276 | Onvoy Spectrum (Sinch) | VoIP |
| 641-277 | AT&T Mobility | Wireless |
| 641-278 | Windstream | Landline |
| 641-279 | Onvoy Spectrum (Sinch) | VoIP |
| 641-280 | Onvoy Spectrum (Sinch) | VoIP |
| 641-281 | Stratus Networks | Landline |
| 641-282 | AT&T Mobility | Wireless |
| 641-283 | Onvoy Spectrum (Sinch) | VoIP |
| 641-284 | Onvoy Spectrum (Sinch) | VoIP |
| 641-285 | Onvoy Spectrum (Sinch) | VoIP |
| 641-286 | Onvoy Spectrum (Sinch) | VoIP |
| 641-287 | Onvoy Spectrum (Sinch) | VoIP |
| 641-288 | AT&T Mobility | Wireless |
| 641-289 | United States Cellular | Wireless |
| 641-290 | Boost Mobile | Landline |
| 641-291 | Onvoy Spectrum (Sinch) | VoIP |
| 641-292 | Onvoy Spectrum (Sinch) | VoIP |
| 641-293 | Winnebago Coop. Tel. Assn. | Landline |
| 641-294 | Onvoy Spectrum (Sinch) | VoIP |
| 641-295 | United States Cellular | Wireless |
| 641-296 | Onvoy Spectrum (Sinch) | VoIP |
| 641-297 | Fmtc-I35, Inc. D/B/A Omnitel Communications | Landline |
| 641-298 | Frontier Communications | Landline |
| 641-299 | Onvoy Spectrum (Sinch) | VoIP |
| 641-300 | FracTEL | Landline |
| 641-301 | Onvoy Spectrum (Sinch) | VoIP |
| 641-302 | Boost Mobile | Landline |
| 641-303 | Mcc Telephony Of Iowa | Landline |
| 641-304 | Verizon Wireless | Wireless |
| 641-305 | Mcc Telephony Of Iowa | Landline |
| 641-306 | Lumen (Level 3) | VoIP |
| 641-307 | Windstream | Landline |
| 641-308 | Farmers Tel. | Landline |
| 641-309 | Farmers Tel. | Landline |
| 641-310 | Onvoy (Sinch) | VoIP |
| 641-315 | Omnitel Communications | Landline |
| 641-316 | Onvoy (Sinch) | VoIP |
| 641-317 | Greenway Communications | Landline |
| 641-318 | T-Mobile | Wireless |
| 641-321 | Lumen (CenturyLink) | Landline |
| 641-322 | Frontier Communications | Landline |
| 641-323 | Winnebago Cooperative Telephone Association | Landline |
| 641-324 | Qwest Corporation | Landline |
| 641-325 | United States Cellular | Wireless |
| 641-326 | Frontier Communications | Landline |
| 641-327 | Windstream | Landline |
| 641-328 | T-Mobile | Wireless |
| 641-329 | Frontier Communications | Landline |
| 641-330 | United States Cellular | Wireless |
| 641-332 | Guthrie Telecommunications Network | Landline |
| 641-333 | Frontier Communications | Landline |
| 641-334 | Onvoy (Sinch) | VoIP |
| 641-335 | Windstream | Landline |
| 641-336 | Windstream | Landline |
| 641-337 | Windstream | Landline |
| 641-338 | Grand River Mutual Tel | Landline |
| 641-339 | Windstream | Landline |
| 641-340 | Iowa Rsa 2 Limited Partnership dba Chat Mobility | Wireless |
| 641-341 | Onvoy (Sinch) | VoIP |
| 641-342 | Windstream | Landline |
| 641-343 | Windstream | Landline |
| 641-344 | United States Cellular | Wireless |
| 641-345 | Coon Valley Coop. Tel. Assn. | Landline |
| 641-346 | Windstream | Landline |
| 641-347 | Windstream | Landline |
| 641-348 | Windstream | Landline |
| 641-349 | Frontier Communications | Landline |
| 641-351 | Metro by T-Mobile (MetroPCS) | Wireless |
| 641-352 | Windstream (Paetec) | Landline |
| 641-353 | Mcc Telephony Of Iowa | Landline |
| 641-354 | Metro by T-Mobile (MetroPCS) | Wireless |
| 641-355 | Clear Lake Independent Tel. | Landline |
| 641-356 | FracTEL | Landline |
| 641-357 | Clear Lake Independent Tel. | Landline |
| 641-358 | Frontier Communications | Landline |
| 641-359 | Commio | Landline |
| 641-362 | Mcc Telephony Of Iowa | Landline |
| 641-363 | Windstream | Landline |
| 641-364 | Windstream | Landline |
| 641-366 | Heart Of Iowa Communications Cooperative | Landline |
| 641-368 | Onvoy Spectrum (Sinch) | VoIP |
| 641-369 | Windstream | Landline |
| 641-372 | Mcc Telephony Of Iowa | Landline |
| 641-373 | United States Cellular | Wireless |
| 641-377 | Colo Tel. | Landline |
| 641-380 | Qwest Corporation | Landline |
| 641-381 | Verizon Wireless | Wireless |
| 641-382 | AT&T Mobility | Wireless |
| 641-384 | Metro by T-Mobile (MetroPCS) | Wireless |
| 641-385 | Windstream | Landline |
| 641-387 | Verizon Business (MCImetro) | Landline |
| 641-388 | Farmers Tel. | Landline |
| 641-390 | Verizon Wireless | Wireless |
| 641-393 | Windstream | Landline |
| 641-394 | Windstream | Landline |
| 641-395 | Farmers Mutual Tel. Co. Nora Springs | Landline |
| 641-396 | Fmtc-I35, Inc. D/B/A Omnitel Communications | Landline |
| 641-397 | Windstream | Landline |
| 641-398 | Farmers Mutual Tel. Co. Nora Springs | Landline |
| 641-400 | Onvoy (Sinch) | VoIP |
| 641-401 | Onvoy (Sinch) | VoIP |
| 641-402 | Onvoy Spectrum (Sinch) | VoIP |
| 641-403 | Aureon Communications | Landline |
| 641-406 | Onvoy (Sinch) | VoIP |
| 641-407 | Aureon Communications | Landline |
| 641-408 | Metro by T-Mobile (MetroPCS) | Wireless |
| 641-410 | Farmers Tel. | Landline |
| 641-413 | Verizon Wireless | Wireless |
| 641-414 | United States Cellular | Wireless |
| 641-416 | Metro by T-Mobile (MetroPCS) | Wireless |
| 641-417 | T-Mobile | Wireless |
| 641-418 | Verizon Wireless | Wireless |
| 641-420 | Verizon Wireless | Wireless |
| 641-421 | Qwest Corporation | Landline |
| 641-422 | Qwest Corporation | Landline |
| 641-423 | Qwest Corporation | Landline |
| 641-424 | Qwest Corporation | Landline |
| 641-425 | United States Cellular | Wireless |
| 641-426 | Verizon Wireless | Wireless |
| 641-427 | Windstream | Landline |
| 641-428 | Qwest Corporation | Landline |
| 641-429 | Windstream | Landline |
| 641-430 | United States Cellular | Wireless |
| 641-431 | United States Cellular | Wireless |
| 641-432 | Windstream | Landline |
| 641-433 | Windstream | Landline |
| 641-435 | Qwest Corporation | Landline |
| 641-436 | Verizon Wireless | Wireless |
| 641-437 | Windstream | Landline |
| 641-439 | Panora Communications Cooperative | Landline |
| 641-440 | Mcc Telephony Of Iowa | Landline |
| 641-441 | Greenway Communications | Landline |
| 641-442 | Grand River Mutual Tel | Landline |
| 641-443 | Grand River Mutual Tel | Landline |
| 641-444 | Frontier Communications | Landline |
| 641-445 | Grand River Mutual Tel | Landline |
| 641-446 | Grand River Mutual Tel | Landline |
| 641-447 | South Central Communications | Landline |
| 641-448 | Onvoy (Sinch) | VoIP |
| 641-449 | Windstream | Landline |
| 641-450 | Northland Communications | Landline |
| 641-451 | Verizon Wireless | Wireless |
| 641-452 | Windstream | Landline |
| 641-453 | Farmers Tel. | Landline |
| 641-454 | Qwest Corporation | Landline |
| 641-455 | T-Mobile | Wireless |
| 641-456 | Qwest Corporation | Landline |
| 641-457 | Mcc Telephony Of Iowa | Landline |
| 641-458 | Qwest Corporation | Landline |
| 641-459 | Citizens Mutual Telephone Cooperative | Landline |
| 641-461 | Hd Carrier | Landline |
| 641-464 | Windstream | Landline |
| 641-465 | Greenway Communications | Landline |
| 641-466 | Windstream | Landline |
| 641-469 | Windstream | Landline |
| 641-470 | Windstream | Landline |
| 641-472 | Windstream | Landline |
| 641-473 | Windstream | Landline |
| 641-474 | Heart Of Iowa Communications Cooperative | Landline |
| 641-475 | Heart Of Iowa Communications Cooperative | Landline |
| 641-476 | Heart Of Iowa Communications Cooperative | Landline |
| 641-477 | Minerva Valley Tel. Co. | Landline |
| 641-478 | Heart Of Iowa Communications Cooperative | Landline |
| 641-479 | Windstream | Landline |
| 641-481 | Verizon Wireless | Wireless |
| 641-482 | Partner Communications Cooperative | Landline |
| 641-483 | Partner Communications Cooperative | Landline |
| 641-484 | Windstream | Landline |
| 641-485 | United States Cellular | Wireless |
| 641-486 | Heart Of Iowa Communications Cooperative | Landline |
| 641-487 | Minerva Valley Tel. Co. | Landline |
| 641-488 | Heart Of Iowa Communications Cooperative | Landline |
| 641-489 | Windstream | Landline |
| 641-492 | Windstream | Landline |
| 641-493 | Partner Communications Cooperative | Landline |
| 641-494 | Qwest Corporation | Landline |
| 641-495 | Frontier Communications | Landline |
| 641-496 | Heart Of Iowa Communications Cooperative | Landline |
| 641-497 | Heart Of Iowa Communications Cooperative | Landline |
| 641-498 | Partner Communications Cooperative | Landline |
| 641-499 | Windstream | Landline |
| 641-500 | Vonage | VoIP |
| 641-501 | Windstream | Landline |
| 641-502 | Partner Communications Cooperative | Landline |
| 641-503 | Onvoy (Sinch) | VoIP |
| 641-504 | T-Mobile | Wireless |
| 641-505 | Bandwidth.com | VoIP |
| 641-506 | AT&T Mobility | Wireless |
| 641-507 | Partner Communications Cooperative | Landline |
| 641-508 | Lumen (Level 3) | VoIP |
| 641-509 | Farmers Tel. | Landline |
| 641-510 | T-Mobile | Wireless |
| 641-512 | United States Cellular | Wireless |
| 641-513 | Onvoy (Sinch) | VoIP |
| 641-514 | AT&T Mobility | Wireless |
| 641-516 | Verizon Wireless | Wireless |
| 641-517 | T-Mobile | Wireless |
| 641-518 | Onvoy Spectrum (Sinch) | VoIP |
| 641-519 | Mcc Telephony Of Iowa | Landline |
| 641-521 | United States Cellular | Wireless |
| 641-522 | Brooklyn Mutual Tel. | Landline |
| 641-523 | Mcc Telephony Of Iowa | Landline |
| 641-524 | Coon Valley Coop. Tel. Assn. | Landline |
| 641-525 | Verizon Wireless | Wireless |
| 641-526 | Partner Communications Cooperative | Landline |
| 641-527 | Lynnville Telephone Company | Landline |
| 641-528 | Windstream | Landline |
| 641-529 | Verizon Wireless | Wireless |
| 641-530 | Verizon Wireless | Wireless |
| 641-531 | AT&T (Teleport Communications) | Landline |
| 641-533 | Grand River Mutual Tel | Landline |
| 641-534 | Windstream | Landline |
| 641-535 | Windstream | Landline |
| 641-536 | Lenox Municipal Communications Utility | Landline |
| 641-541 | Verizon Wireless | Wireless |
| 641-543 | Ton80 Communications | Landline |
| 641-548 | T-Mobile | Wireless |
| 641-551 | Farmers Tel. | Landline |
| 641-552 | Omnitel Communications | Landline |
| 641-557 | Windstream | Landline |
| 641-560 | Onvoy (Sinch) | VoIP |
| 641-561 | Winnebago Coop. Tel. Assn. | Landline |
| 641-562 | Winnebago Coop. Tel. Assn. | Landline |
| 641-565 | Winnebago Coop. Tel. Assn. | Landline |
| 641-566 | Winnebago Coop. Tel. Assn. | Landline |
| 641-567 | Winnebago Coop. Tel. Assn. | Landline |
| 641-568 | Winnebago Coop. Tel. Assn. | Landline |
| 641-569 | AT&T Mobility | Wireless |
| 641-570 | Farmers Tel. | Landline |
| 641-572 | United States Cellular | Wireless |
| 641-575 | Bandwidth.com | VoIP |
| 641-579 | Frontier Communications | Landline |
| 641-580 | Verizon Wireless | Wireless |
| 641-581 | Winnebago Coop. Tel. Assn. | Landline |
| 641-582 | Windstream | Landline |
| 641-583 | AT&T Mobility | Wireless |
| 641-584 | Winnebago Coop. Tel. Assn. | Landline |
| 641-585 | Winnebago Cooperative Telephone Association | Landline |
| 641-586 | Frontier Communications | Landline |
| 641-587 | Communications 1 Networks | Landline |
| 641-588 | Winnebago Coop. Tel. Assn. | Landline |
| 641-589 | Onvoy Spectrum (Sinch) | VoIP |
| 641-590 | Verizon Wireless | Wireless |
| 641-591 | Winnebago Coop. Tel. Assn. | Landline |
| 641-592 | Winnebago Coop. Tel. Assn. | Landline |
| 641-593 | Searsboro Tel. Co. | Landline |
| 641-594 | Sully Tel. Assn. | Landline |
| 641-595 | Windstream | Landline |
| 641-596 | Verizon Wireless | Wireless |
| 641-599 | Windstream | Landline |
| 641-600 | FracTEL | Landline |
| 641-601 | Onvoy Spectrum (Sinch) | VoIP |
| 641-608 | Farmers Tel. | Landline |
| 641-609 | Onvoy (Sinch) | VoIP |
| 641-612 | Farmers Tel. | Landline |
| 641-613 | Local Telephone Data Services | Landline |
| 641-614 | Onvoy (Sinch) | VoIP |
| 641-619 | Imon Communications | Landline |
| 641-620 | Windstream | Landline |
| 641-621 | Windstream | Landline |
| 641-622 | Windstream | Landline |
| 641-623 | Windstream | Landline |
| 641-624 | Windstream | Landline |
| 641-625 | Windstream | Landline |
| 641-626 | Windstream | Landline |
| 641-627 | Windstream | Landline |
| 641-628 | Windstream | Landline |
| 641-629 | Verizon Wireless | Wireless |
| 641-630 | Metro by T-Mobile (MetroPCS) | Wireless |
| 641-631 | Omnitel Communications | Landline |
| 641-632 | Qwest Corporation | Landline |
| 641-634 | Windstream | Landline |
| 641-635 | Windstream | Landline |
| 641-636 | Windstream | Landline |
| 641-637 | Windstream | Landline |
| 641-638 | Verizon Wireless | Wireless |
| 641-639 | Onvoy Spectrum (Sinch) | VoIP |
| 641-640 | Verizon Wireless | Wireless |
| 641-642 | Farmers Mutual Coop. Tel. | Landline |
| 641-643 | Onvoy Spectrum (Sinch) | VoIP |
| 641-644 | Barnes City Coop. Tel. | Landline |
| 641-646 | Onvoy (Sinch) | VoIP |
| 641-647 | Windstream | Landline |
| 641-648 | Qwest Corporation | Landline |
| 641-649 | Windstream | Landline |
| 641-651 | Verizon Wireless | Wireless |
| 641-652 | Windstream | Landline |
| 641-653 | Windstream | Landline |
| 641-654 | Aureon Communications | Landline |
| 641-655 | Windstream | Landline |
| 641-656 | Windstream | Landline |
| 641-657 | T-Mobile | Wireless |
| 641-658 | Windstream | Landline |
| 641-659 | Windstream | Landline |
| 641-660 | United States Cellular | Wireless |
| 641-661 | Windstream | Landline |
| 641-662 | Farmers Tel. | Landline |
| 641-664 | Citizens Mutual Telephone Cooperative | Landline |
| 641-665 | Farmers Tel. | Landline |
| 641-666 | Onvoy (Sinch) | VoIP |
| 641-667 | Windstream | Landline |
| 641-668 | Ton80 Communications | Landline |
| 641-670 | Verizon Wireless | Wireless |
| 641-671 | Onvoy (Sinch) | VoIP |
| 641-672 | Qwest Corporation | Landline |
| 641-673 | Qwest Corporation | Landline |
| 641-674 | T-Mobile | Wireless |
| 641-675 | Citizens Mutual Telephone Cooperative | Landline |
| 641-676 | Mahaska Communication Group | Landline |
| 641-677 | FracTEL | Landline |
| 641-678 | Searsboro Tel. Co. | Landline |
| 641-680 | Verizon Wireless | Wireless |
| 641-681 | Onvoy (Sinch) | VoIP |
| 641-682 | Qwest Corporation | Landline |
| 641-683 | Qwest Corporation | Landline |
| 641-684 | Qwest Corporation | Landline |
| 641-688 | FracTEL | Landline |
| 641-690 | Onvoy Spectrum (Sinch) | VoIP |
| 641-691 | AT&T Mobility | Wireless |
| 641-692 | Frontier Communications | Landline |
| 641-693 | Windstream | Landline |
| 641-696 | Farmers Tel. | Landline |
| 641-705 | Mcc Telephony Of Iowa | Landline |
| 641-706 | United States Cellular | Wireless |
| 641-710 | Omnitel Communications | Landline |
| 641-713 | Omnitel Communications | Landline |
| 641-714 | Onvoy Spectrum (Sinch) | VoIP |
| 641-715 | Onvoy (Sinch) | VoIP |
| 641-717 | Onvoy (Sinch) | VoIP |
| 641-718 | United States Cellular | Wireless |
| 641-719 | AT&T Mobility | Wireless |
| 641-722 | Citizens Mutual Telephone Cooperative | Landline |
| 641-724 | Windstream | Landline |
| 641-726 | Windstream | Landline |
| 641-727 | Ton80 Communications | Landline |
| 641-728 | Windstream | Landline |
| 641-729 | United States Cellular | Wireless |
| 641-732 | Qwest Corporation | Landline |
| 641-734 | Windstream | Landline |
| 641-735 | Mcc Telephony Of Iowa | Landline |
| 641-736 | Windstream | Landline |
| 641-737 | Windstream | Landline |
| 641-739 | Farmers Tel. | Landline |
| 641-740 | Verizon Wireless | Wireless |
| 641-741 | Killduff Telephone Company | Landline |
| 641-742 | Windstream | Landline |
| 641-743 | Windstream | Landline |
| 641-744 | Windstream | Landline |
| 641-745 | Windstream | Landline |
| 641-746 | Casey Mutual Tel. | Landline |
| 641-747 | Windstream | Landline |
| 641-748 | Winnebago Coop. Tel. Assn. | Landline |
| 641-749 | Farmers Mutual Tel. Co. Nora Springs | Landline |
| 641-750 | Verizon Wireless | Wireless |
| 641-751 | United States Cellular | Wireless |
| 641-752 | Qwest Corporation | Landline |
| 641-753 | Qwest Corporation | Landline |
| 641-754 | Qwest Corporation | Landline |
| 641-755 | Panora Communications Cooperative | Landline |
| 641-756 | Farmers Mutual Tel. Co. Nora Springs | Landline |
| 641-757 | Verizon Wireless | Wireless |
| 641-758 | Heart Of Iowa Ventures | Landline |
| 641-760 | Onvoy Spectrum (Sinch) | VoIP |
| 641-762 | Communications 1 Networks | Landline |
| 641-763 | South Central Communications | Landline |
| 641-764 | Windstream | Landline |
| 641-765 | Fmtc-I35, Inc. D/B/A Omnitel Communications | Landline |
| 641-766 | Windstream | Landline |
| 641-767 | Windstream | Landline |
| 641-768 | Windstream | Landline |
| 641-770 | United States Cellular | Wireless |
| 641-772 | Windstream | Landline |
| 641-773 | Grand River Mutual Tel | Landline |
| 641-774 | Windstream | Landline |
| 641-775 | Rockwell Coop. Tel. Assn. | Landline |
| 641-776 | Ton80 Communications | Landline |
| 641-777 | United States Cellular | Wireless |
| 641-780 | United States Cellular | Wireless |
| 641-781 | T-Mobile | Wireless |
| 641-782 | Windstream | Landline |
| 641-783 | Windstream | Landline |
| 641-784 | Grand River Mutual Tel | Landline |
| 641-785 | Windstream | Landline |
| 641-787 | Windstream | Landline |
| 641-788 | Grand River Mutual Tel | Landline |
| 641-790 | Verizon Wireless | Wireless |
| 641-791 | Windstream | Landline |
| 641-792 | Windstream | Landline |
| 641-793 | Reasnor Telephone Company | Landline |
| 641-794 | Rockwell Coop. Tel. Assn. | Landline |
| 641-795 | Farmers Tel. | Landline |
| 641-796 | Reasnor Telephone Company | Landline |
| 641-797 | Winnebago Coop. Tel. Assn. | Landline |
| 641-798 | Killduff Telephone Company | Landline |
| 641-799 | United States Cellular | Wireless |
| 641-800 | Onvoy (Sinch) | VoIP |
| 641-801 | United States Cellular | Wireless |
| 641-802 | Ip Horizon | Landline |
| 641-808 | T-Mobile | Wireless |
| 641-810 | Ip Horizon | Landline |
| 641-812 | Mcc Telephony Of Iowa | Landline |
| 641-814 | Local Telephone Data Services | Landline |
| 641-816 | Omnitel Communications | Landline |
| 641-818 | United States Cellular | Wireless |
| 641-819 | Windstream | Landline |
| 641-820 | Verizon Wireless | Wireless |
| 641-821 | Metro by T-Mobile (MetroPCS) | Wireless |
| 641-822 | Rockwell Coop. Tel. Assn. | Landline |
| 641-823 | Windstream | Landline |
| 641-825 | Ip Horizon | Landline |
| 641-826 | Farmers Tel. | Landline |
| 641-827 | Farmers Tel. | Landline |
| 641-828 | Windstream | Landline |
| 641-829 | Ventura Tel. Co. | Landline |
| 641-831 | T-Mobile | Wireless |
| 641-832 | Osage Municipal Communications Utility | Landline |
| 641-834 | Mcc Telephony Of Iowa | Landline |
| 641-837 | Ton80 Communications | Landline |
| 641-840 | Verizon Wireless | Wireless |
| 641-841 | Windstream | Landline |
| 641-842 | Windstream | Landline |
| 641-843 | Qwest Corporation | Landline |
| 641-844 | Qwest Corporation | Landline |
| 641-845 | Winnebago Coop. Tel. Assn. | Landline |
| 641-846 | Mcc Telephony Of Iowa | Landline |
| 641-847 | Qwest Corporation | Landline |
| 641-849 | Verizon Wireless | Wireless |
| 641-853 | Frontier Communications | Landline |
| 641-854 | Qwest Corporation | Landline |
| 641-856 | Windstream | Landline |
| 641-857 | Dumont Tel. | Landline |
| 641-858 | Heart Of Iowa Communications Cooperative | Landline |
| 641-860 | Verizon Wireless | Wireless |
| 641-861 | T-Mobile | Wireless |
| 641-862 | Windstream | Landline |
| 641-863 | Verizon Wireless | Wireless |
| 641-864 | Hubbard Coop. Tel. Assn. | Landline |
| 641-865 | Farmers Tel. | Landline |
| 641-866 | Frontier Communications | Landline |
| 641-868 | Heart Of Iowa Communications Cooperative | Landline |
| 641-869 | Windstream | Landline |
| 641-870 | Iowa Rsa 2 Limited Partnership dba Chat Mobility | Wireless |
| 641-871 | Verizon Wireless | Wireless |
| 641-872 | South Central Communications | Landline |
| 641-873 | Grand River Mutual Tel | Landline |
| 641-874 | Windstream | Landline |
| 641-876 | Grand River Mutual Tel | Landline |
| 641-877 | Windstream | Landline |
| 641-880 | United States Cellular | Wireless |
| 641-881 | Verizon Wireless | Wireless |
| 641-887 | Mcc Telephony Of Iowa | Landline |
| 641-888 | Verizon Wireless | Wireless |
| 641-891 | United States Cellular | Wireless |
| 641-892 | Frontier Communications | Landline |
| 641-894 | Rockwell Coop. Tel. Assn. | Landline |
| 641-895 | United States Cellular | Wireless |
| 641-896 | Winnebago Coop. Tel. Assn. | Landline |
| 641-897 | Grand River Mutual Tel | Landline |
| 641-898 | Windstream | Landline |
| 641-900 | FracTEL | Landline |
| 641-901 | United States Cellular | Wireless |
| 641-902 | United States Cellular | Wireless |
| 641-903 | T-Mobile | Wireless |
| 641-905 | Lumen (Level 3) | VoIP |
| 641-909 | T-Mobile | Wireless |
| 641-916 | AT&T Mobility | Wireless |
| 641-919 | United States Cellular | Wireless |
| 641-920 | Heart Of Iowa Communications Cooperative | Landline |
| 641-921 | Mcc Telephony Of Iowa | Landline |
| 641-922 | Heart Of Iowa Communications Cooperative | Landline |
| 641-923 | Qwest Corporation | Landline |
| 641-924 | Lumen (Level 3) | VoIP |
| 641-925 | Communications 1 Network | Landline |
| 641-926 | Winnebago Coop. Tel. Assn. | Landline |
| 641-927 | Winnebago Coop. Tel. Assn. | Landline |
| 641-929 | Citizens Mutual Telephone Cooperative | Landline |
| 641-931 | Verizon Wireless | Wireless |
| 641-932 | Windstream | Landline |
| 641-933 | Windstream | Landline |
| 641-934 | Windstream | Landline |
| 641-935 | Windstream | Landline |
| 641-936 | Windstream | Landline |
| 641-937 | Windstream | Landline |
| 641-938 | Windstream | Landline |
| 641-939 | Heart Of Iowa Communications Cooperative | Landline |
| 641-942 | Windstream | Landline |
| 641-943 | Windstream | Landline |
| 641-944 | Windstream | Landline |
| 641-946 | Windstream | Landline |
| 641-947 | Windstream | Landline |
| 641-948 | Blue Earth Valley Tel. | Landline |
| 641-949 | Windstream | Landline |
| 641-954 | Verizon Wireless | Wireless |
| 641-955 | FracTEL | Landline |
| 641-962 | Farmers Tel. | Landline |
| 641-966 | Ton80 Communications | Landline |
| 641-969 | Windstream | Landline |
| 641-977 | FracTEL | Landline |
| 641-980 | Verizon Wireless | Wireless |
| 641-982 | Farmers Tel. | Landline |
| 641-983 | Farmers Tel. | Landline |
| 641-985 | Farmers Tel. | Landline |
| 641-990 | United States Cellular | Wireless |
| 641-991 | T-Mobile | Wireless |
| 641-992 | Farmers Tel. | Landline |
| 641-995 | Frontier Communications | Landline |
| 641-997 | United States Cellular | Wireless |
| 641-998 | Frontier Communications | Landline |
| 641-999 | Onvoy (Sinch) | VoIP |
Line type reflects the registry assignment; ported numbers can differ. Unknown 641 number calling? ActiveArmor® screens it before you ever look it up.
Cities & Communities in and around Area Code 641
Communities the 641 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 |
|---|---|---|
| Ackworth | 50001, 50166, 50125 | Internet Air |
| Anita | 50020, 50274, 50002 | Internet Air |
| Bagley | 50026, 50277, 50029 | Internet Air |
| Bondurant | 50035, 50009, 50032 | Fiber up to 1 GIG |
| Brooklyn | 52211, 50157, 52232 | Internet Air |
| Cedar Falls | 50613 | Internet Air |
| Centerville | 52544, 52555, 52593 | Internet Air |
| Clear Lake | 50428, 50482 | Internet Air |
| Colfax | 50054, 50169, 50127 | Internet Air |
| Eldon | 52554, 52560, 52588 | Internet Air |
| Grinnell | 50112 | Internet Air |
| Harvey | 50119, 50256, 50143 | Internet Air |
| Indianola | 50125, 50001 | Internet Air |
| Jamaica | 50128, 50277, 50066 | Internet Air |
| Jefferson | 50129 | Internet Air |
| Kellogg | 50135, 50208, 50137 | Internet Air |
| Knoxville | 50138 | Internet Air |
| Lamoni | 50140, 50067, 64426 | Internet Air |
| Leighton | 50143, 52534, 52577 | Internet Air |
| Linden | 50146, 50233, 50216 | Internet Air |
| Marshalltown | 50158, 50078, 50142 | Internet Air |
| Mason City | 50401, 50467 | Internet Air |
| Melbourne | 50162, 50234, 50120 | Internet Air |
| Monroe | 50170, 50214, 50232 | Internet Air |
| Montour | 50173, 50142, 50632 | Internet Air |
| Moravia | 52571 | Internet Air |
| Nevada | 50201, 50010 | Internet Air |
| Newton | 50208 | Internet Air |
| Norwalk | 50211, 50321, 50265 | Fiber up to 1 GIG |
| Osceola | 50213 | Internet Air |
| Oskaloosa | 52595, 52577, 52534 | Internet Air |
| Ottumwa | 52501, 52530, 52548 | Internet Air |
| Pella | 50219, 50119, 50143 | Internet Air |
| Perry | 50220, 50039, 50167 | Internet Air |
| Redfield | 50233, 50146 | Internet Air |
| Rockwell | 50469, 50475, 50477 | Internet Air |
| State Center | 50247, 50056, 50162 | Internet Air |
| Tama | 52339, 52342, 50173 | Internet Air |
| Toledo | 52342, 52339, 50173 | Internet Air |
| Yale | 50277, 50216, 50128 | 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.
641 Area Code Map
Area code 641 serves Mason City and nearby communities in IA.
↓ Printable PDF
Open the printable 641 map (PDF) · All Iowa area codes · Home internet in Mason City
Counties Covered by the 641 Area Code
Counties are served in whole or in part; population is U.S. Census Bureau ACS 2023. The 641 also reaches parts of Warren County, Cerro Gordo County, Marshall County, Jasper County, Wapello County, Marion County, Mahaska County, Poweshiek County and 7 more.
The 641, explained
Area Code 641: More Than a Number in Mason City
In Mason City, the 641 is more than digits on a caller ID. It arrived in 2000, carved out of the 515, and it has meant Mason City and surrounding communities ever since — 584 carrier prefixes keep its lines busy today, and an established 641 number still says you’ve been here a while.
The map tells its own story: Mason City and surrounding communities, with no overlay on its territory. The area and the code are still one and the same — rare in Iowa and getting rarer nationwide.
Keeping a 641 matters here. An existing 641 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 641: bring it to AT&TInternet, wireless & stores in the 641
AT&T Home Internet in Area Code 641
AT&T home internet serves communities across area code 641, 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 641? AT&T Business Internet is available at many addresses.
Fiber install day in the 641Check your address ›
Moving to Area Code 641?
Set up home internet in area code 641 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 641 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 641
AT&T’s 5G network covers most of area code 641. ActiveArmor® spam blocking is included with every unlimited plan, your 641 number stays yours, and great cell phone deals in Mason City are a tap away.
5G across the 641ActiveArmor® includedKeep your 641 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 641 number? Ask when you activate a line, and porting an existing 641 number keeps it yours.
Stay connected across Mason CityShop wireless plans ›
AT&T Stores in Area Code 641
Looking for cell phone stores in area code 641? The nearest AT&T stores to the 641 are listed below — walk in for switching, porting, upgrades and hands-on help, or handle it all online.
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 Mason CityFind your store ›
International Calling from Area Code 641
Calling abroad from area code 641? 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 641 calls most:MexicoIndiaGuatemalaChinaVietnam
Top places of birth among foreign-born residents of the 641’s counties, U.S. Census Bureau ACS 2023.
Calling abroad from a 641 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.
Mason City calls the worldSee international plans ›
641 Area Code Quick Facts & Dialing
StateIowa
Time zoneCentral
OverlaysNonethe 641 stands alone
Established2000split from the 515
Dialing10 digits7-digit local calls may still work
Toll-free?Nogeographic code
Population1.18Mcounties served, Census 2023
Largest cityMason City+39 more ›
How to dial a 641 number
| Scenario | Format | Example |
|---|---|---|
| Local call (within the region) | 641 + 7-digit number | (641) 555-0100 |
| Long distance (within the U.S.) | 1 + 641 + 7-digit number | 1 (641) 555-0100 |
| Calling 641 from another country | +1 641 + 7-digit number | +1 641 555 0100 |
| From a mobile phone | (641) + 7-digit number | (641) 555-0100 |
A Short History of Area Code 641
Created in 2000 as a split from the 515, the 641 has meant Mason City and surrounding communities ever since. No splits or overlays have divided its territory since.
2000Split from the 515
In service since 2000, with no overlay on its territory today.
Nearby & Related Area Codes
Browse area codes by state: Iowa (5) · California (41) · Texas (29) · Florida (23) · all 50 states ›
Area Code 641 FAQ
What area code is 641?
641 is the area code for Mason City, Iowa and the surrounding communities. It appears at the front of every local 10-digit phone number in the area.
Where is area code 641?
Area code 641 serves Mason City, Iowa and nearby communities including Ackworth, Ames, Anita. The full city list is in the cities table above.
Why did I get a text message from a 641 number?
The most common 641 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 641?
A 641 number usually means Mason City 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 641?
Central time. The live local time is shown at the top of this page.
Why am I getting calls from 641 numbers?
641 is an active, legitimate Iowa 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 641 prefixes are drawing complaints right now.
Is 641 a toll-free number?
No. 641 is a geographic area code tied to Mason City, Iowa. Toll-free calls come from 800, 833, 844, 855, 866, 877 and 888 numbers.
When was area code 641 created?
Area code 641 entered service in 2000 and still covers Mason City and the surrounding Iowa communities today. The full timeline is in the history section above.
Which cities use area code 641?
The largest communities include Ackworth, Anita, Bagley, Bondurant, Brooklyn. The full list is in the cities table above.
Does AT&T offer service in the 641?
Yes: home internet, wireless and retail stores across the 641. Availability is checked address by address.
Can I still get a 641 number?
Yes. Carriers in Mason City and across the 641 still issue 641 numbers on new lines, and you can port an existing 641 number to any carrier.
Can I keep my 641 number if I move?
Yes. Phone numbers are portable: your 641 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.
