Public regulatory phone
(815) 407-3910
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 |
|---|---|---|---|---|---|
| SPX CORPORATION L | 0021570973 | ULS | 0ecb108fe1e8570437e717e4082c2699fe1ae2f006c4a681171b975d629e8432 | Authoritative identifier (100.0%) | 2026-08-30 03:14:53 |