This is a universally administered unicast address with a registered vendor prefix.
MAC address14:6B:9C:FF:FF:FF
OUI14:6B:9C
Vendor addressRoom 501, Building 3, No.32 Dafu Road, Zhangge Community, Fucheng Subdistrict, Longhua District, Shenzhen City Guangdong Province CN 518000
Block range14:6B:9C:00:00:00– 14:6B:9C: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-6416:6B:9C:FF:FE:FF:FF:FF
Possible IPv6 link-local derivationfe80::166b:9cff: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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