AKG Acoustics GmbH — MAC prefix identifies the registry assignee
Summary
- // what this is
- AKG Acoustics is registered to MAC prefix
B4:82:7Bin the IEEE OUI database. When a device's MAC address begins withB4:82:7B, that block was registered by AKG Acoustics — the OUI identifies the maker of the network hardware, which is not always the brand on the device. - // analyst note
- An exact prefix match identifies the IEEE registry assignment only. The Group and Local bits in B4 are both zero; setting either bit changes the prefix. The 24 suffix bits permit 16,777,216 values, not a measured device count.
About this vendor.
A MAC address beginning B4:82:7B matches an IEEE MA-L assignment registered to AKG Acoustics GmbH. That identifies the recorded assignee for the prefix; it does not establish the maker of a particular device or show that the address is deployed, common, or safe.
The assignment is 24 bits long, leaving 24 bits for suffix values: 16,777,216 possible values within that prefix. This is a mathematical address space, not a count of devices or shipments. For B4, the low-order Group bit (01) and Local bit (02) are both zero. Those bits are fixed for an exact literal prefix match; changing either bit produces a different prefix.
RFC 7042 describes 48-bit MAC identifiers as an initial OUI or longer assigned prefix followed by additional bits. Compare the first three octets to identify this assignment. A match does not establish a device category, product, operating system, current legal identity, or security state.
- Device category
- Unknown [Unknown] — https://standards-oui.ieee.org/oui/oui.csv