Public regulatory phone
(708) 345-0400
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 |
|---|---|---|---|---|---|
| CALLEN MANUFACTURING CORP. L | 0022110704 | ULS | 010e405fc7f6df67dfc6d029cf9de5115c1465b367f59dfadbee7cbdd5040e31 | Authoritative identifier (100.0%) | 2026-08-02 08:48:20 |