Acubit MAC Prefix: Vendor Identified, Device Unknown
Summary
- // what this is
- Acubit is registered to MAC prefix
5C:FA:FBin the IEEE OUI database. When a device's MAC address begins with5C:FA:FB, that block was registered by Acubit — the OUI identifies the maker of the network hardware, which is not always the brand on the device. - // analyst note
- A prefix match identifies the Acubit registry assignment only; supplied sources do not map the prefix to a specific device or product.
About this vendor.
A MAC address beginning 5C:FA:FB matches an IEEE MA-L assignment to Acubit; the available evidence does not identify a device category for that prefix. The assignment is a registry record and does not establish which vendor currently operates a device or whether it is safe.
First-party Otiom pages identify Acubit as the company that developed Otiom, a location service designed to help prevent and locate wandering by people with dementia. The Danish grant record names the recipient as Acubit ApS and describes project work on hardware, mobile apps, and a communications platform. Those materials provide company product context, but do not map Otiom or any device to this MAC prefix.
5C:FA:FB is 24 bits long, leaving 24 bits for suffix values: 16,777,216 possible values within this matching block. This is a mathematical address-space count, not a device or shipment count. Its first byte, 5C (hexadecimal), has Group bit 0 and Local bit 0. Under RFC 7042, the Group bit distinguishes group from individual addressing, while the Local bit indicates local administration. These bits are fixed for an exact literal prefix match; changing either bit produces a different prefix.
A match can support identification of the registered assignment, but not a particular product or deployment.
- Vendor
- Acubit — IEEE MA-L assignment.
- Device category
- Unknown; the sources do not map a device category to this prefix.
- Prefix
5C:FA:FB(/24); 24 suffix bits remain.- Group and Local bits
- Both 0 in first octet
5C; either bit changing produces a different prefix.
- Company
- Acubit [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Registry
- MA-L [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Country
- Denmark [Confirmed] — https://otiom.com/about-otiom/
- Device types
- Unknown [Unknown] — https://otiom.com/about-otiom/
- Notable products
- Otiom location service [Confirmed] — https://otiom.com/about-otiom/
- Industry
- Location services for dementia safety [Confirmed] — https://otiom.com/privacy-policy/
- Website
- https://otiom.com/about-otiom/ [Confirmed] — https://otiom.com/about-otiom/
- Assignment date
- Assignment dates are unavailable in these IEEE CSV records. [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv