This is a universally administered unicast address with a registered vendor prefix.
MAC addressB4:37:D1:90:00:00
OUIB4:37:D1
Vendor addressRoom 923, No.2 Building, Deying International Square, No.222, Changhon Nanjing Jiangsu CN 210012
Block rangeB4:37:D1:90:00:00– B4:37:D1:9F: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
RandomizationNot randomized
Derived modified EUI-64B6:37:D1:FF:FE:90:00:00
Possible IPv6 link-local derivationfe80::b637:d1ff:fe90:0

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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