This is a universally administered unicast address with a registered vendor prefix.
MAC address68:91:D0:B7:FF:FF
OUI68:91:D0
Vendor address711 Lu Plaza, 2 Wing Yip Street, Kwun Tong Hong Kong HK 0000
Block range68:91:D0:B0:00:00– 68:91:D0:BF:FF:FF
Address capacity1,048,576
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-646A:91:D0:FF:FE:B7:FF:FF
Possible IPv6 link-local derivationfe80::6a91:d0ff:feb7: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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