This is a universally administered unicast address with a registered vendor prefix.
MAC address30:43:D7:6F:FF:FF
OUI30:43:D7
Vendor addressArea A 3rd Floor, Area A 5rd Floor and 6th Floor, 301, building 2, 7th Industrial Park, Yulv Community,Yutang Street, Guangming District, Shenzhen CN 518000
Block range30:43:D7:60:00:00– 30:43:D7:6F: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-6432:43:D7:FF:FE:6F:FF:FF
Possible IPv6 link-local derivationfe80::3243:d7ff:fe6f: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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