ADDO-Japan Corporation: vendor identified by prefix 00:0F:85
Summary
- // what this is
- ADDO-Japan is registered to MAC prefix
00:0F:85in the IEEE OUI database. When a device's MAC address begins with00:0F:85, that block was registered by ADDO-Japan — the OUI identifies the maker of the network hardware, which is not always the brand on the device. - // analyst note
- The MA-L prefix 00:0F:85 covers the first 24 bits of a 48-bit MAC identifier, leaving 24 suffix bits (16,777,216 possible suffix values). For this exact prefix, the first-byte Group and Local bits are both 0; changing either bit produces a different prefix. Suffix capacity is not an observed device or shipment count. A match identifies the registry assignment, not a particular device, operating system, current legal identity, or security state.
About this vendor.
A MAC address beginning with 00:0F:85 matches the IEEE MA-L assignment to ADDO-Japan Corporation. This identifies the registry holder of the prefix; it does not establish which device made the address or whether it is deployed by that company. No device category or product is mapped to this exact prefix in the available evidence.
The assignment covers 24 prefix bits, leaving 24 bits for suffixes: 16,777,216 possible suffix values. That number describes address-space capacity, not a count of devices, shipments, or observed traffic. An exact 00:0F:85 match fixes the first-byte Group and Local bits at zero. A changed bit produces a different prefix and therefore does not match this assignment.
RFC 7042 explains that MAC identifiers use an initial organizational prefix followed by additional bits, and that the Group and Local bits have special significance. A prefix match can support identification of the registry assignment; it cannot identify an individual device, operating system, current company status, or security state.
- Device category
- Unknown; no device category is mapped to this exact prefix in the supplied evidence [Unknown]
- Registry
- MA-L [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Company
- ADDO-Japan Corporation [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Prefix
00:0F:85[Confirmed] — https://standards-oui.ieee.org/oui/oui.csv- Total assigned prefixes
- 1 [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Country
- Japan [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Device types
- Unknown [Unknown]
- Notable products
- Unknown [Unknown]
- Industry
- Unknown [Unknown]
- Organization status
- Unknown [Unknown]
- Website
- Unknown [Unknown]
- Related vendors
- Unknown [Unknown]
- Historic prefix
- Unknown [Unknown]
- Assignment date
- Assignment dates are unavailable in these IEEE CSV records. [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv