This is a universally administered unicast address with a registered vendor prefix.
MAC address80:77:86:DF:FF:FF
OUI80:77:86
Vendor addressPlot No:288A,3rd Floor, Udyog Vihar Phase-4, Sector-18,Gurugram Haryana-122015 Gurugram Haryana IN 122015
Block range80:77:86:D0:00:00– 80:77:86:DF: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-6482:77:86:FF:FE:DF:FF:FF
Possible IPv6 link-local derivationfe80::8277:86ff:fedf: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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