Albentia Systems S.A. — MAC prefix identification is limited to its IEEE assignment

A MAC address beginning 00:1F:4A matches an IEEE MA-L assignment registered to Albentia Systems S.A. The supplied evidence does not identify a device category or product that uses this prefix, so the match identifies the registry assignment, not a particular device or vendor deployment.

The assignment is 24 bits long, leaving 24 bits for suffix values: 16,777,216 possible values. That is a mathematical address-space size, not a count of devices, shipments, or addresses in use. In 00, the Group bit and Local bit are both zero. The Group bit is fixed for this exact prefix; the Local bit is likewise fixed. Changing either bit produces a different prefix, not a variation within this assignment.

Compare the first three octets of a captured 48-bit MAC address with 00:1F:4A to test for this assignment. RFC 7042 describes EUI-48 identifiers as an assigned initial prefix followed by remaining bits. The IEEE registry lists Albentia Systems S.A. at an address in Madrid, Spain; it does not provide an assignment date.

Registry assignment

Albentia Systems S.A. — MA-L prefix 00:1F:4A [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv

Device category

Unknown; no supplied evidence maps a device type to this exact prefix [Unknown] — https://standards-oui.ieee.org/oui/oui.csv

Address interpretation

24-bit prefix; compare the first three octets. Group bit 0 and Local bit 0 are fixed for this literal prefix [Confirmed] — https://www.rfc-editor.org/rfc/rfc7042.txt

Suffix space

24 bits, or 16,777,216 possible suffix values; this is not a device count [Confirmed] — https://www.rfc-editor.org/rfc/rfc7042.txt

Registry

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

Assignment

00:1F:4A [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv

Device type

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

Country

Spain [ES] — https://standards-oui.ieee.org/oui/oui.csv