This is a universally administered unicast address with a registered vendor prefix.
MAC addressA4:C0:C7:FF:FF:FF
OUIA4:C0:C7
Vendor addressRoom 110,Unit A,No.1 Chuangye Building,43# YanShan Road,Shekou Area ShenZhen GuangDong CN 518052
Block rangeA4:C0:C7:00:00:00– A4:C0:C7: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:C0:C7:FF:FE:FF:FF:FF
Possible IPv6 link-local derivationfe80::a6c0:c7ff:feff: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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