Free MAC Lookup API

One GET request, JSON back. No key, no signup, CORS open. Up to 1,000 lookups per day per IP.

Endpoint

GET https://macvendorcheck.com/api/mac/{mac}

The MAC can be full or just the OUI, with or without separators: 28:6F:B9:12:34:56, 28-6F-B9 or 286FB9 all work.

Example

curl https://macvendorcheck.com/api/mac/286FB9

{
  "success": true,
  "mac": "28:6F:B9",
  "oui": "286FB9",
  "vendor": "Nokia Shanghai Bell Co., Ltd.",
  "registry": "MA-L",
  "country": "CN",
  "page": "https://macvendorcheck.com/mac/286FB9"
}

Notes

Rate limit: 30 requests/minute and 1,000/day per IP.
Unknown MAC returns {"success": false} with the normalized MAC echoed back.
Data is the official IEEE MA-L, MA-M and MA-S registry, refreshed monthly.
Please keep the attribution link if you display results publicly.