This is a universally administered unicast address with a registered vendor prefix.
MAC address54:FB:5A:FF:FF:FF
OUI54:FB:5A
Vendor address16 Deogyeong-daero #1556, Suite B-301, Yeongtong-gu Suwon Gyeonggi-do KR 16690
Block range54:FB:5A:00:00:00– 54:FB:5A: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-6456:FB:5A:FF:FE:FF:FF:FF
Possible IPv6 link-local derivationfe80::56fb:5aff: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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