This is a universally administered unicast address with a registered vendor prefix.
MAC address6C:27:C8:67:FF:FF
OUI6C:27:C8
Vendor address14th-17th Floors, Building 7, Yunmi City, No. 19 Ningshuang Road, Yuhuatai District, Nanjing Nanjing CN 210000
Block range6C:27:C8:60:00:00– 6C:27:C8:6F: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-646E:27:C8:FF:FE:67:FF:FF
Possible IPv6 link-local derivationfe80::6e27:c8ff:fe67: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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