This is a universally administered unicast address with a registered vendor prefix.
MAC address40:F3:85:1F:FF:FF
OUI40:F3:85
Vendor addressMTC, The Moat Billingham Cleveland GB TS23 4ED
Block range40:F3:85:10:00:00– 40:F3:85:1F: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-6442:F3:85:FF:FE:1F:FF:FF
Possible IPv6 link-local derivationfe80::42f3:85ff:fe1f: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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