Prefixes with phone numbers reported to the Federal Trade Commission and Federal Communications Commission
| Prefix | Phone Numbers | Last Complaint |
|---|---|---|
| 231-220 | 36 | December 12, 2018 |
| 231-755 | 35 | December 12, 2018 |
| 231-620 | 24 | December 12, 2018 |
| 231-380 | 3 | December 12, 2018 |
| 231-243 | 11 | December 12, 2018 |
| 231-265 | 74 | December 12, 2018 |
| 231-212 | 11 | December 12, 2018 |
| 231-244 | 206 | December 12, 2018 |
| 231-310 | 11 | December 12, 2018 |
| 231-930 | 17 | December 12, 2018 |
| 231-747 | 19 | December 12, 2018 |
| 231-201 | 17 | December 12, 2018 |
| 231-670 | 40 | December 12, 2018 |
| 231-714 | 12 | December 12, 2018 |
| 231-525 | 36 | December 12, 2018 |
| 231-497 | 18 | December 12, 2018 |
| 231-740 | 41 | December 12, 2018 |
| 231-445 | 15 | December 12, 2018 |
| 231-350 | 39 | December 12, 2018 |
| 231-327 | 8 | December 12, 2018 |
| 231-642 | 35 | December 12, 2018 |
| 231-251 | 87 | December 12, 2018 |
| 231-666 | 13 | December 12, 2018 |
| 231-928 | 10 | December 12, 2018 |
| 231-287 | 14 | December 12, 2018 |
| 231-533 | 19 | December 12, 2018 |
| 231-519 | 13 | December 12, 2018 |
| 231-557 | 65 | December 12, 2018 |
| 231-246 | 30 | December 12, 2018 |
| 231-216 | 202 | December 12, 2018 |
| 231-769 | 10 | December 11, 2018 |
| 231-403 | 31 | December 11, 2018 |
| 231-209 | 15 | December 11, 2018 |
| 231-568 | 10 | December 11, 2018 |
| 231-405 | 5 | December 11, 2018 |
| 231-893 | 27 | December 11, 2018 |
| 231-245 | 10 | December 11, 2018 |
| 231-383 | 35 | December 11, 2018 |
| 231-291 | 3 | December 11, 2018 |
| 231-662 | 4 | December 11, 2018 |
| 231-599 | 8 | December 11, 2018 |
| 231-338 | 28 | December 11, 2018 |
| 231-640 | 14 | December 11, 2018 |
| 231-719 | 11 | December 11, 2018 |
| 231-844 | 3 | December 11, 2018 |
| 231-912 | 4 | December 11, 2018 |
| 231-329 | 9 | December 11, 2018 |
| 231-331 | 55 | December 11, 2018 |
| 231-680 | 6 | December 11, 2018 |
| 231-944 | 15 | December 11, 2018 |
| 231-384 | 23 | December 11, 2018 |
| 231-597 | 16 | December 11, 2018 |
| 231-803 | 6 | December 11, 2018 |
| 231-936 | 5 | December 11, 2018 |
| 231-690 | 31 | December 11, 2018 |
| 231-147 | 10 | December 11, 2018 |
| 231-381 | 1 | December 10, 2018 |
| 231-464 | 4 | December 10, 2018 |
| 231-465 | 4 | December 10, 2018 |
| 231-920 | 34 | December 10, 2018 |
| 231-410 | 4 | December 10, 2018 |
| 231-598 | 13 | December 10, 2018 |
| 231-387 | 2 | December 10, 2018 |
| 231-100 | 2 | December 10, 2018 |
| 231-222 | 15 | December 10, 2018 |
| 231-570 | 20 | December 10, 2018 |
| 231-432 | 23 | December 10, 2018 |
| 231-225 | 26 | December 9, 2018 |
| 231-888 | 9 | December 9, 2018 |
| 231-354 | 13 | December 9, 2018 |
| 231-286 | 12 | December 8, 2018 |
| 231-307 | 8 | December 8, 2018 |
| 231-632 | 25 | December 7, 2018 |
| 231-835 | 9 | December 7, 2018 |
| 231-836 | 20 | December 7, 2018 |
| 231-408 | 33 | December 7, 2018 |
| 231-730 | 16 | December 7, 2018 |
| 231-239 | 26 | December 7, 2018 |
| 231-412 | 13 | December 7, 2018 |
| 231-440 | 14 | December 7, 2018 |
| 231-277 | 18 | December 7, 2018 |
| 231-903 | 16 | December 6, 2018 |
| 231-289 | 7 | December 6, 2018 |
| 231-571 | 16 | December 6, 2018 |
| 231-360 | 34 | December 6, 2018 |
| 231-280 | 7 | December 6, 2018 |
| 231-498 | 17 | December 6, 2018 |
| 231-486 | 21 | December 6, 2018 |
| 231-832 | 24 | December 6, 2018 |
| 231-377 | 6 | December 6, 2018 |
| 231-425 | 12 | December 6, 2018 |
| 231-296 | 5 | December 6, 2018 |
| 231-895 | 2 | December 6, 2018 |
| 231-742 | 13 | December 6, 2018 |
| 231-144 | 12 | December 6, 2018 |
| 231-643 | 2 | December 5, 2018 |
| 231-366 | 10 | December 5, 2018 |
| 231-288 | 17 | December 5, 2018 |
| 231-622 | 20 | December 5, 2018 |
| 231-596 | 7 | December 5, 2018 |
| Type: General Purpose Code |
| Use: Geograpic |
| Location: MICHIGAN |
| Country: UNITED STATES |
| Service Date: 1999-06-05 |
| Service: - |
Other area codes serving MICHIGAN, UNITED STATES