AirDefense, Inc. MAC Prefix: Vendor Recorded, Device Unknown

A MAC address beginning 00:16:5D is recorded in the IEEE MA-L registry to AirDefense, Inc.; the assignment does not identify a specific device category. The supplied records establish this single 24-bit prefix and do not document the company’s products or industry, or link the prefix to a deployed product. The country indication in the registry record is US.

For 00:16:5D, the first octet is 00: its Group bit and Local bit are both zero. Those bits are fixed for an exact match to this prefix. Changing either bit produces a different prefix, so the bit interpretation does not describe variations within this assignment.

The 24 remaining bits allow 16,777,216 possible suffix values. That is an address-space calculation, not a count of devices, shipments, or observed traffic. A captured exact prefix match supports identification of the registry assignment only; it cannot establish a particular device, current vendor identity, or security state. RFC 7042 describes 48-bit MAC identifiers as an assigned prefix followed by additional bits.

Assigned prefix

00:16:5D (MA-L, 24 bits) [Confirmed]

Device identification

Unknown from supplied evidence [Unknown]

Possible suffix values

16,777,216; not a device or shipment count [Confirmed]

Company

AirDefense, Inc. [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv

Registry

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

Prefix

00:16:5D [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv

Country

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

Assignment date

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

Device type

Unknown [Unknown]

Industry

Unknown [Unknown]

Notable products

Unknown [Unknown]

Website

Unknown [Unknown]

Organization status

Unknown [Unknown]