Public regulatory phone
(773) 646-3347
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 |
|---|---|---|---|---|---|
| LAFARGE HOLCIM CEMENT L | 0030005318 | ULS | 09276152cf9dc31e066849fea856ca2e01c6190db4047b0c5f0b7f96508215df | Authoritative identifier (100.0%) | 2026-08-15 23:49:18 |