AiVIS Co., Itd. MAC prefix: device identification Unknown
Summary
- // what this is
- AiVIS Co., Itd is registered to MAC prefix
04:B9:7Din the IEEE OUI database. When a device's MAC address begins with04:B9:7D, that block was registered by AiVIS Co., Itd — the OUI identifies the maker of the network hardware, which is not always the brand on the device. - // analyst note
- For
04:B9:7D, the prefix is 24 bits and leaves 24 suffix bits, or 16,777,216 possible values; this is not a device or shipment count. Its first octet is04, with Group bit 0 and Local bit 0. Both bits are fixed for this literal prefix; changing either bit produces a different prefix. A match identifies the registry assignment, not a particular device, product, operating system, or security state.
About this vendor.
A MAC address beginning 04:B9:7D is assigned to AiVIS Co., Itd.; the available evidence does not identify a device or product using it. The IEEE record names the registrant and lists one MA-L assignment. A prefix match establishes that the address falls within this registry assignment, not that a particular device, operating system, or current vendor identity is present.
This is a 24-bit prefix, leaving 24 bits for suffix values: 16,777,216 possible values. That arithmetic describes the address space available after the prefix; it does not indicate how many devices exist or were shipped. In the first octet 04, the Group and Local bits are both zero. For this exact literal prefix, those bits are fixed. Changing either bit produces a different prefix, rather than a variation within this assignment.
RFC 7042 describes the structure and interpretation of 48-bit MAC identifiers.
The IEEE record includes KR, indicating South Korea, and provides no assignment date. The supplied evidence contains no independently supported product catalog or device category tied to this prefix.
- Device or product
- Unknown; no device or product is identified by the supplied evidence. [Unknown]
- Company
- AiVIS Co., Itd. [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Prefix
04:B9:7D[Confirmed] — https://standards-oui.ieee.org/oui/oui.csv- Device types
- Unknown [Unknown] — https://standards-oui.ieee.org/oui/oui.csv
- Assignment date
- Assignment dates are unavailable in these IEEE CSV records. [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv