This is a universally administered unicast address with a registered vendor prefix.
MAC addressC4:B7:57:7F:FF:FF
OUIC4:B7:57
Vendor addressnishida 6-1 Kakuda-City Miyagi-Pref JP 981-1595
Block rangeC4:B7:57:00:00:00– C4:B7:57: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-64C6:B7:57:FF:FE:7F:FF:FF
Possible IPv6 link-local derivationfe80::c6b7:57ff: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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