This is a universally administered unicast address with a registered vendor prefix.
MAC address6C:38:38:7F:FF:FF
OUI6C:38:38
Vendor address76-1, Hirakawa Yokomichi Joyo-shi Kyoto JP 610-0101
Block range6C:38:38:00:00:00– 6C:38:38: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-646E:38:38:FF:FE:7F:FF:FF
Possible IPv6 link-local derivationfe80::6e38:38ff:fe7f: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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