This is a universally administered unicast address with a registered vendor prefix.
MAC address48:51:D0:FF:FF:FF
OUI48:51:D0
Vendor address18th Floor,Inno laser Building,18-69 Changwu Mid Road,Changzhou Science & Education Town,Wujin District,Changzhou,Jiangsu213000,China Changzhou Jiangsu CN 213000
Block range48:51:D0:00:00:00– 48:51:D0: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-644A:51:D0:FF:FE:FF:FF:FF
Possible IPv6 link-local derivationfe80::4a51:d0ff: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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