Public regulatory phone
(412) 777-8000
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 |
|---|---|---|---|---|---|
| CALGON CORPORATION L | ULS | 01bc775980b321e32944f57784b384694792a6d4a25d3196ff9dae2567c2e653 | Authoritative identifier (100.0%) | 2026-08-03 19:48:22 |