Public regulatory phone
(520) 526-3991
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 |
|---|---|---|---|---|---|
| NIGRO, WILLIAM D DBA MATRIX LAND SURVEYING L | ULS | 0219d3d59707685d84dc392d429d2ddb524ad2f914ecb4ec4603486a2d57ddee | Authoritative identifier (100.0%) | 2026-08-04 09:18:26 |