Public regulatory phone
(616) 227-4400
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 |
|---|---|---|---|---|---|
| Sparkplug IP, LLC customer_inquiries | 0030665475 | FORM499 | 834245 | Authoritative identifier (100.0%) | 2026-08-01 21:48:09 |
| Sparkplug IP, LLC mitigation_contact | 0030665475 | RMD | RMD0006346 | Authoritative identifier (100.0%) | 2026-07-31 22:18:11 |