This is a universally administered unicast address with a registered vendor prefix.
MAC addressAC:64:DD:2F:FF:FF
OUIAC:64:DD
Vendor address4/F BLDG-B, Forzen Technology Park,Fuyuan 2nd Road, Fuyong Town, Baoan District shenzhen CN 518103
Block rangeAC:64:DD:20:00:00– AC:64:DD:2F: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-64AE:64:DD:FF:FE:2F:FF:FF
Possible IPv6 link-local derivationfe80::ae64:ddff:fe2f: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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