Prefixes with phone numbers reported to the Federal Trade Commission and Federal Communications Commission
| Prefix | Phone Numbers | Last Complaint |
|---|---|---|
| 331-301 | 30 | December 12, 2018 |
| 331-233 | 10 | December 12, 2018 |
| 331-227 | 3 | December 12, 2018 |
| 331-244 | 26 | December 12, 2018 |
| 331-425 | 23 | December 12, 2018 |
| 331-447 | 1 | December 11, 2018 |
| 331-204 | 94 | December 11, 2018 |
| 331-212 | 44 | December 10, 2018 |
| 331-239 | 1 | December 10, 2018 |
| 331-256 | 31 | December 8, 2018 |
| 331-444 | 7 | December 7, 2018 |
| 331-871 | 9 | December 7, 2018 |
| 331-207 | 49 | December 7, 2018 |
| 331-701 | 16 | December 6, 2018 |
| 331-222 | 9 | December 5, 2018 |
| 331-240 | 11 | December 5, 2018 |
| 331-703 | 10 | December 5, 2018 |
| 331-248 | 10 | December 4, 2018 |
| 331-252 | 3 | December 4, 2018 |
| 331-200 | 76 | December 4, 2018 |
| 331-865 | 1 | December 2, 2018 |
| 331-321 | 21 | November 30, 2018 |
| 331-705 | 1 | November 30, 2018 |
| 331-225 | 3 | November 30, 2018 |
| 331-775 | 4 | November 29, 2018 |
| 331-300 | 16 | November 28, 2018 |
| 331-439 | 2 | November 28, 2018 |
| 331-208 | 28 | November 25, 2018 |
| 331-788 | 1 | November 24, 2018 |
| 331-549 | 1 | November 23, 2018 |
| 331-255 | 8 | November 21, 2018 |
| 331-560 | 1 | November 20, 2018 |
| 331-310 | 18 | November 20, 2018 |
| 331-704 | 4 | November 19, 2018 |
| 331-247 | 1 | November 19, 2018 |
| 331-522 | 1 | November 19, 2018 |
| 331-231 | 3 | November 16, 2018 |
| 331-684 | 17 | November 16, 2018 |
| 331-166 | 1 | November 14, 2018 |
| 331-307 | 18 | November 14, 2018 |
| 331-600 | 2 | November 13, 2018 |
| 331-901 | 1 | November 13, 2018 |
| 331-771 | 11 | November 9, 2018 |
| 331-205 | 14 | November 7, 2018 |
| 331-725 | 16 | November 5, 2018 |
| 331-852 | 2 | November 3, 2018 |
| 331-454 | 3 | November 2, 2018 |
| 331-237 | 1 | November 1, 2018 |
| 331-202 | 3 | November 1, 2018 |
| 331-707 | 1 | November 1, 2018 |
| 331-210 | 7 | October 31, 2018 |
| 331-058 | 1 | October 30, 2018 |
| 331-757 | 3 | October 30, 2018 |
| 331-717 | 4 | October 30, 2018 |
| 331-803 | 14 | October 29, 2018 |
| 331-219 | 13 | October 26, 2018 |
| 331-431 | 13 | October 26, 2018 |
| 331-676 | 2 | October 26, 2018 |
| 331-525 | 1 | October 26, 2018 |
| 331-330 | 11 | October 25, 2018 |
| 331-884 | 1 | October 25, 2018 |
| 331-455 | 1 | October 25, 2018 |
| 331-345 | 1 | October 25, 2018 |
| 331-883 | 1 | October 25, 2018 |
| 331-464 | 1 | October 24, 2018 |
| 331-731 | 2 | October 24, 2018 |
| 331-638 | 1 | October 24, 2018 |
| 331-206 | 2 | October 23, 2018 |
| 331-845 | 1 | October 23, 2018 |
| 331-214 | 5 | October 23, 2018 |
| 331-293 | 1 | October 22, 2018 |
| 331-733 | 2 | October 22, 2018 |
| 331-000 | 3 | October 19, 2018 |
| 331-077 | 1 | October 19, 2018 |
| 331-792 | 1 | October 18, 2018 |
| 331-285 | 1 | October 18, 2018 |
| 331-666 | 4 | October 18, 2018 |
| 331-500 | 3 | October 15, 2018 |
| 331-262 | 7 | October 15, 2018 |
| 331-497 | 1 | October 15, 2018 |
| 331-979 | 16 | October 12, 2018 |
| 331-435 | 1 | October 11, 2018 |
| 331-056 | 1 | October 11, 2018 |
| 331-061 | 1 | October 10, 2018 |
| 331-980 | 2 | October 10, 2018 |
| 331-209 | 10 | October 9, 2018 |
| 331-066 | 1 | October 9, 2018 |
| 331-305 | 11 | October 9, 2018 |
| 331-009 | 1 | October 8, 2018 |
| 331-046 | 1 | October 8, 2018 |
| 331-215 | 20 | October 8, 2018 |
| 331-481 | 27 | October 6, 2018 |
| 331-441 | 1 | October 6, 2018 |
| 331-319 | 1 | October 5, 2018 |
| 331-694 | 1 | October 5, 2018 |
| 331-570 | 1 | October 5, 2018 |
| 331-064 | 1 | October 5, 2018 |
| 331-533 | 2 | October 4, 2018 |
| 331-057 | 1 | October 4, 2018 |
| 331-831 | 2 | October 4, 2018 |
| Type: General Purpose Code |
| Use: Geograpic |
| Location: ILLINOIS |
| Country: UNITED STATES |
| Service Date: 2007-10-07 |
| Service: - |
Other area codes serving ILLINOIS, UNITED STATES