Resolve an FCC ID (printed on US wireless/electronic devices) to the grantee — the manufacturer that holds the FCC equipment authorization. Pass fccId in any form (BCG-E3217A, BCGE3217A). Returns the grantee code, the product code, and the grantee company: name, city, state, country, and the date its grantee code was registered. Uses the FCC EAS Equipment Authorization Grantee Registrations open dataset, free and keyless — the "who made this device" lookup an agent reading a label off hardware cannot do natively. (Per-product RF detail — frequencies, equipment class — is not in the open dataset and is out of scope.)