This is a universally administered unicast address with a registered vendor prefix.
MAC addressC8:6B:BC:DF:FF:FF
OUIC8:6B:BC
Vendor addressBuilding 12, No.998, Wenyi West Road, Yuhang District, Hangzhou, Zhejiang. Hangzhou Zhejiang CN 330100
Block rangeC8:6B:BC:D0:00:00– C8:6B:BC:DF: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-64CA:6B:BC:FF:FE:DF:FF:FF
Possible IPv6 link-local derivationfe80::ca6b:bcff:fedf: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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