Public regulatory phone
(312) 440-3600
Associations below come from public FCC regulatory records. Confidence describes the source relationship, not current ownership of the number.
| Company or contact | FRN | System | Source record | Confidence | Observed |
|---|---|---|---|---|---|
| ONE SUPERIOR PLACE, LLC L | 0024252983 | ULS | 020b276f86cf7e84253138cec96a2ebfd8fbb01c36655bdf25dbae23833995a6 | Authoritative identifier (100.0%) | 2026-08-04 08:18:26 |