Alcomp, Inc — MAC prefix assignment
Summary
- // what this is
- Alcomp is registered to MAC prefix
44:9C:B5in the IEEE OUI database. When a device's MAC address begins with44:9C:B5, that block was registered by Alcomp — the OUI identifies the maker of the network hardware, which is not always the brand on the device. - // analyst note
- An exact 24-bit prefix match identifies the MA-L registry assignment. The remaining 24 bits represent 16,777,216 possible suffix values, not a device or shipment count. The Group and Local bits of first octet 44 are both 0; these bits are fixed for the exact prefix, and changing either produces a different prefix.
About this vendor.
A MAC address beginning 44:9C:B5 matches the IEEE MA-L assignment listed to Alcomp, Inc; the available evidence does not identify a specific device category or product using it.
The assignment covers the first 24 bits of a 48-bit MAC address. The remaining 24 bits allow 16,777,216 possible suffix values, but that is a theoretical address-space size, not a device or shipment count. A matching prefix establishes the registry assignment only; it does not establish which device is present or who operates it.
The first octet 44 has Group and Local bits both clear, as recorded in the deterministic address interpretation. For this exact 24-bit prefix, those bits are fixed. Changing either bit produces a different prefix. RFC 7042 describes these bit meanings and explains that MAC identifiers can use an initial OUI or a longer assigned prefix. The IEEE CSV records supplied here do not include assignment dates.
- Interpretation
- Group bit 0; Local bit 0 [Confirmed] — https://www.rfc-editor.org/rfc/rfc7042.txt
- Company
- Alcomp, Inc [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Prefix
44:9C:B5(MA-L, /24) [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv- Country
- United States [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Device types
- Unknown [Unknown] — https://standards-oui.ieee.org/oui/oui.csv
- Assignment dates
- unavailable in supplied IEEE CSV record [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv