ALCATEL-LUCENT FRANCE - WTD: MAC prefix identification

A MAC address beginning 00:21:AE matches an IEEE MA-L assignment registered to ALCATEL-LUCENT FRANCE - WTD; the record does not identify a device type or product. The assignment identifies the registry holder for that prefix, not who deployed a captured interface or its current vendor identity.

This is a 24-bit prefix, so matching requires the first three octets 00:21:AE. The remaining 24 bits allow 16,777,216 possible suffix values; that is a mathematical address space, not a count of devices or shipments.

For this exact prefix, the Group bit and Local bit are both zero. RFC 7042 says that IEEE assigns OUIs and longer MAC prefixes with the Local bit zero and the Group bit unspecified; the supplied excerpt does not include an explanation of the Local bit’s meaning. Setting either bit changes the prefix and no longer matches this exact registry assignment. The available IEEE CSV record supplies no assignment date.

Device type

Unknown [Unknown]

Matching prefix

00:21:AE (first 24 bits) [Confirmed]

Company

ALCATEL-LUCENT FRANCE - WTD [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv

Registry

MA-L [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv

Prefix

00:21:AE [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv

Country

France [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv

Assignment date

Assignment dates are unavailable in these IEEE CSV records. [Unknown] — https://standards-oui.ieee.org/oui/oui.csv