Public regulatory phone
(231) 547-6595
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 |
|---|---|---|---|---|---|
| MANTHEI DEVELOPMENT CORP owner | 0002766855 | ASR | 7809c5d89f2aba49dd4ee8d121dec98ed53deaf7aadc41c0b4b387480baf1fb6 | Authoritative identifier (100.0%) | 2026-08-07 01:18:33 |