CalculatorsLesson 154Free preview
MAC Address Lookup
This lesson is part of Web Developer Tools · All levels
Summary
MAC Address Lookup matches the first three octets of MAC addresses with the OUI database to guess the device manufacturer. The OUI is a 24-bit IEEE-registered vendor, so the result can show the network card brand or device. This lookup does not give the user's location, and the random address on modern phones is often unrecognizable.
Key points
- The first three octets or 24 bits are the vendor's OUI.
- The OUI database needs to be updated as enrollment continues to increase
- MAC lookup is not geolocation
- Modern phones use a random MAC per network
- Normalising the format before matching the address
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