This is a universally administered unicast address with a registered vendor prefix.
MAC address78:D8:00:D0:00:00
OUI78:D8:00
Vendor address#323, 3F, Kyoungin Center, 20, Baekbeom-ro 577beon-gil, Bupyeong-gu Incheon KR 21449
Block range78:D8:00:D0:00:00– 78:D8:00: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-647A:D8:00:FF:FE:D0:00:00
Possible IPv6 link-local derivationfe80::7ad8:ff:fed0:0

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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