This is a universally administered unicast address with a registered vendor prefix.
MAC addressA4:B1:EE:7F:FF:FF
OUIA4:B1:EE
Vendor addressAm Gut Wolf 15 Aachen DE 52070
Block rangeA4:B1:EE:00:00:00– A4:B1:EE:FF:FF:FF
Address capacity16,777,216
TransmissionUnicast: addressed to a single device
AdministrationUniversally administered: its prefix comes from a block registered through the IEEE Registration Authority
RandomizationNot randomized
Derived modified EUI-64A6:B1:EE:FF:FE:7F:FF:FF
Possible IPv6 link-local derivationfe80::a6b1:eeff:fe7f:ffff

The EUI-64 and IPv6 link-local fields are a mathematical derivation from this MAC address. They don't confirm the device currently uses that IPv6 address.

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