ADInstruments MAC Prefix 00:0B:55: Registry Identifies ADInstruments
Summary
- // what this is
- ADInstruments is registered to MAC prefix
00:0B:55in the IEEE OUI database. When a device's MAC address begins with00:0B:55, that block was registered by ADInstruments — the OUI identifies the maker of the network hardware, which is not always the brand on the device. - // analyst note
- A 24-bit prefix match leaves 24 suffix bits; 16,777,216 values are mathematically possible, not an observed device or shipment count. The first-octet Group and Local bits are both zero for this exact prefix; changing either bit yields a different prefix. A prefix match alone does not establish device, product, deployment, traffic prevalence, or security status.
About this vendor.
A MAC address beginning with 00:0B:55 matches the IEEE MA-L assignment recorded to ADInstruments. This identifies the registry entry associated with the prefix; it does not establish which device, product, or organization currently uses an observed address.
The assignment is 24 bits long, leaving 24 bits for the suffix. RFC 7042 explains that a 48-bit MAC identifier may use an initial OUI followed by additional bits. In this prefix, the first octet is 00: its Group bit and Local bit are both zero. Those bit values are fixed for an exact match to this prefix; changing either creates a different prefix.
There are 16,777,216 possible suffix values after this 24-bit prefix. That is a mathematical address-space count, not a count of devices, shipments, or addresses actually deployed. A captured address can establish a prefix match only; it cannot by itself establish device type, product mapping, traffic prevalence, or security status.
- Registry assignment
- ADInstruments — MA-L assignment
00:0B:55[Confirmed] - Prefix length
- 24 bits, with 24 suffix bits [Confirmed]
- Possible suffix values
- 16,777,216 address values; not an observed device count [Confirmed]
- Company
- ADInstruments [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Registry
- MA-L [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Prefixes
00:0B:55[Confirmed] — https://standards-oui.ieee.org/oui/oui.csv- Country
- Unknown [Unknown]
- Device types
- Unknown [Unknown]
- Notable products
- Unknown [Unknown]
- Industry
- Unknown [Unknown]
- Website
- Unknown [Unknown]
- Organization status
- Unknown [Unknown]
- Historic prefix
- Unknown [Unknown]