1C:21:D1:FF:FF:FF - Private

Private MA-M

This is a universally administered unicast address with a registered vendor prefix, but the organization has asked IEEE not to disclose its identity.

MAC address1C:21:D1:FF:FF:FF

OUI1C:21:D1

Vendor address–

Country–

Block range1C:21:D1:F0:00:00– 1C:21:D1:FF: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-641E:21:D1:FF:FE:FF:FF:FF

Possible IPv6 link-local derivationfe80::1e21:d1ff: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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