ACN Technologies — MAC prefix identifies a registry assignment
Summary
- // what this is
- ACN Technologies is registered to MAC prefix
00:04:05in the IEEE OUI database. When a device's MAC address begins with00:04:05, that block was registered by ACN Technologies — the OUI identifies the maker of the network hardware, which is not always the brand on the device. - // analyst note
- This MA-L assignment identifies the registry allocation only. A MAC address beginning 00:04:05 matches the 24-bit prefix; the remaining 24 bits provide 16,777,216 possible suffix values, not a device or shipment count. For this exact prefix, the first-octet Group and Local bits are both zero. Changing either bit changes the prefix and makes it a different literal match. A matching address does not establish the device, product, current vendor identity, or security state.
About this vendor.
A MAC address beginning 00:04:05 matches an IEEE MA-L assignment registered to ACN Technologies. This identifies the registered assignment only; the supplied evidence does not establish a device type, product, or current vendor identity.
The prefix is 24 bits of a 48-bit MAC address, leaving 24 suffix bits and 16,777,216 possible suffix values. That is a mathematical address space, not a count of devices or shipments. A captured matching address cannot by itself identify the particular device or product.
In this exact prefix, the first-octet Group bit and Local bit are both zero. RFC 7042 describes these bits in MAC addresses; changing either bit changes the literal prefix and no longer matches 00:04:05. The IEEE record does not include assignment dates.
- Identification
00:04:05is registered to ACN Technologies; no device category is established. [Confirmed]- Registry
- MA-L assignment
000405. [Confirmed] - Address boundary
- 24-bit prefix, with 24 suffix bits and 16,777,216 possible suffix values. [Confirmed]
- First-octet bits
- Group = 0 and Local = 0 for this literal prefix. [Confirmed]
- Company
- ACN Technologies [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Registry
- MA-L [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Prefix
00:04:05[Confirmed] — https://standards-oui.ieee.org/oui/oui.csv- Country
- Korea [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Device type
- Unknown [Unknown] — https://standards-oui.ieee.org/oui/oui.csv
- Assignment dates
- Assignment dates are unavailable in these IEEE CSV records. [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Website
- Unknown [Unknown] — https://standards-oui.ieee.org/oui/oui.csv