This is a universally administered unicast address with a registered vendor prefix.
MAC address0C:EF:AF:B7:FF:FF
OUI0C:EF:AF
Vendor address9-11th floor, B7, FinancialHarbour, NO.77, Guanggu Avenue, East Lake New Technology Development Zone Wuhan Hubei CN 430074
Block range0C:EF:AF:B0:00:00– 0C:EF:AF: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-640E:EF:AF:FF:FE:B7:FF:FF
Possible IPv6 link-local derivationfe80::eef:afff: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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