Acumen MAC Prefix: Vendor Identification Unknown
Summary
- // what this is
- Acumen is registered to MAC prefix
74:EC:F1in the IEEE OUI database. When a device's MAC address begins with74:EC:F1, that block was registered by Acumen — the OUI identifies the maker of the network hardware, which is not always the brand on the device. - // analyst note
- A match identifies the MA-L prefix assignment only; it does not establish deployment, prevalence, a specific device or product, current operator, or security state. For this 24-bit prefix, the Group and Local bits in the first octet are both zero; the remaining 24 bits allow 16,777,216 possible suffix values, not a device count.
About this vendor.
A MAC address beginning 74:EC:F1 matches an IEEE MA-L assignment registered to Acumen; the supplied evidence does not identify a device category or establish which vendor currently operates under that name. The assignment identifies a registry record, not a particular device, product, operating system, or security state.
The prefix covers the first 24 bits of a 48-bit MAC address. A matching address therefore has 24 remaining bits, allowing 16,777,216 possible suffix values. That is the size of the address space, not a device or shipment count. A match supports identification of the assigned prefix only; it does not show that the address is deployed or prevalent.
RFC 7042 describes the Group and Local bits in the first octet. For 74:EC:F1, the Group bit is 0 and the Local bit is 0, as reflected in the supplied hexadecimal interpretation. These bits are fixed for this exact prefix. Changing either bit produces a different prefix, so variation within the matching block does not alter their values. Assignment dates are unavailable in these IEEE CSV records.
- Company
- Acumen [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Registry
- MA-L [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Prefixes
74:EC:F1[Confirmed] — https://standards-oui.ieee.org/oui/oui.csv- Device types
- Unknown [Unknown] — https://standards-oui.ieee.org/oui/oui.csv