57.18 MAC Address
20201111 The media access control or uniquely identifies devices on a network using 6 octets,
To check who the vendor is for a known MAC address visit https://macvendors.com/. For example, using the above MAC address identifies the vendor as The first 3 octets identify the vendor.
Note that the Android Pixel3a, for example, uses a random MAC address for different WiFi access points, which can lead to some confusion, but as a security mechanism this concept is becoming more common.
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