This is a universally administered unicast address with a registered vendor prefix.
MAC addressB4:21:1D:7F:FF:FF
OUIB4:21:1D
Vendor addressRoom 313,B Bld,Horizon International Tower,Zhichun Road,6,Haidian District,Beijing City,P.R.China Beijing CN 100086
Country🇨🇳 China
Block rangeB4:21:1D:00:00:00– B4:21:1D: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-64B6:21:1D:FF:FE:7F:FF:FF
Possible IPv6 link-local derivationfe80::b621:1dff: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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