This is a universally administered unicast address with a registered vendor prefix.
MAC address00:1C:EF:FF:FF:FF
OUI00:1C:EF
Vendor address669, Ruey Kuang Road, Neihu Taipei TW 114
Country🇹🇼 Taiwan
Block range00:1C:EF:00:00:00– 00:1C:EF: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-6402:1C:EF:FF:FE:FF:FF:FF
Possible IPv6 link-local derivationfe80::21c:efff: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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