This is a universally administered unicast address with a registered vendor prefix.
MAC addressC4:45:EC:7F:FF:FF
OUIC4:45:EC
Vendor addressRoom 1-607 Shanghai Shanghai US 201100
Country🇺🇸 United States
Block rangeC4:45:EC:00:00:00– C4:45:EC: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-64C6:45:EC:FF:FE:7F:FF:FF
Possible IPv6 link-local derivationfe80::c645:ecff: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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