Development — entry 058 of 100
MAC address vendor lookup
Given a MAC address or OUI prefix, this API returns the registered vendor and related IEEE assignment metadata, sourced from the IEEE registries. Every request needs an API key and returns a 401 without one (confirmed live); output is selectable per call between JSON, XML, CSV, or a plain vendor-name-only text response, and the service offers a free-to-start tier alongside metered/subscription plans for higher volume.
AuthenticationAPI KeySign up with the provider to obtain credentials.
HTTPSSupportedTraffic is encrypted in transit.
CORSEnabledCallable directly from browser JavaScript.
PricingFreemiumA usable free tier exists, with paid plans for more volume.
FormatsJSON, XML, CSV, TextResponses can be requested as JSON or XML or CSV or Text.
GreatAPIs Score
Score67
Authentication15/25API key required
Pricing17/20Freemium tier available
Docs0/20No docs or spec available
Formats15/15Supports 4 response formats
Freshness20/20Verified within 6 months
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<a href="https://greatapis.com/api/mac-address-vendor-lookup/"><img src="https://greatapis.com/badge/mac-address-vendor-lookup.svg" alt="Scored 67 on greatapis.com"></a>Auth quickstart
- Sign up with the provider to get an API key.
- Send it on every request as a header
Authorization: <key> - The exact header isn't documented — Authorization is a common default; confirm in the provider's docs.
Stored keyNo key stored
Your key is stored only in this browser (localStorage) and sent directly to the API — never to greatapis.