Public regulatory phone
(412) 233-2139
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 |
|---|---|---|---|---|---|
| KOPPERS INDUSTRIES INC L | 0005358676 | ULS | 08ab2575ce14bd017b95fe4f129e816b79291fc4d50f05d9e89fbc74958fdab7 | Authoritative identifier (100.0%) | 2026-08-15 00:49:18 |