ACE Antenna Co., ltd MAC prefix A0:21:8B: no device mapping established

A MAC address beginning with A0:21:8B matches an IEEE MA-L assignment registered to ACE Antenna Co., ltd; the supplied evidence does not identify a device or product using it. The assignment is evidence of a registry match, not proof of who made a captured device or how it is deployed.

This is one 24-bit prefix, leaving 24 bits for possible suffix values: 16,777,216 combinations. That is a mathematical address-space count, not a count of devices or shipments. A matching address establishes only that its first three octets match the listed assignment.

RFC 7042 explains that the first octet contains Group and Local bits. For this exact prefix, both are zero: the Group bit is 0 and the Local bit is 0. Those bits are fixed by the literal prefix; changing either produces a different prefix. The supplied records contain no assignment dates.

Device identification

Unknown; no device category is mapped to this prefix

Matching prefix

A0:21:8B (/24)

Possible suffix values

16,777,216; this is not an observed device count

Company

ACE Antenna Co., ltd [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv

Registry

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

Prefixes

A0:21:8B [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv

Total prefix count

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

Country

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

Device types

Unknown [Unknown]

Assignment dates

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