This is a universally administered unicast address with a registered vendor prefix.
MAC address B8:F4:53:97:FF:FF
OUIB8:F4:53Matched block: B8:F4:53:9 /28
Vendor addressGlobal Innovation And Technology CentreBack Lane Melbourn Hertfordshire GB SG86DP
Block rangeB8:F4:53:90:00:00– B8:F4:53:9F: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
RandomizationNo randomization indicators detected
Derived modified EUI-64BA:F4:53:FF:FE:97:FF:FF
Possible IPv6 link-local derivationfe80::baf4:53ff:fe97: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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