84 different phone numbers from 312-757-3000 to 312-757-3999 have been reported to the FTC, with 207 complaints in total. No single number in the block has more than 9 complaints, so looking up one number on its own understates how often this block appears in reports. 34% of the complaints describe "Other". Reports came from 25 states, most often Washington, Illinois and New York. The earliest complaint on record is from September 22, 2023 and the most recent from May 20, 2026.
Complaints are filed by consumers with the FTC and are not verified. Callers often spoof numbers, so a number listed here may have been faked by a caller rather than used by the person or business it is assigned to. Many complaints spread across consecutive numbers can point to one calling operation rotating through a block, but this page does not identify who placed the calls. How we source this data.
| Complaint type | Reports | Share |
|---|---|---|
| Other | 71 | 34% |
| Unwanted Calls | 68 | 33% |
| No subject provided | 26 | 13% |
| Dropped call or no message | 23 | 11% |
| Calls pretending to be government, businesses, or family and friends | 9 | 4% |
| Medical & prescriptions | 4 | 2% |
| Energy, solar, & utilities | 1 | 0% |
| Reducing your debt (credit cards, mortgage, student loans) | 1 | 0% |
| Washington | 48 |
| Illinois | 39 |
| New York | 36 |
| Ohio | 26 |
| New Jersey | 11 |
| California | 10 |
Sorted by number of complaints.