Public regulatory phone
(203) 627-9368
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 |
|---|---|---|---|---|---|
| GUARANTEE MECHANICAL SERVICES INC L | 0003579117 | ULS | 03b3c67dedc761f80daf1e385863629fc322839b21a82147574e9223fc4a7ab1 | Authoritative identifier (100.0%) | 2026-08-06 10:18:35 |