Mac - Serial Numbers Free 【Real – Edition】

These are alphanumeric and contain encoded data. First 3 digits: Manufacturing location. 4th & 5th digits: Year and week of production. Last 4 digits: Model and configuration code.

You can use a simple regex to validate the format before sending a request to a database: MAC - Serial Numbers Free

Node.js or Python (FastAPI) to handle the lookup logic. These are alphanumeric and contain encoded data