Adachi-Syokai Co., Ltd. MAC Prefix: Registry Assignment
Summary
- // what this is
- Adachi-Syokai is registered to MAC prefix
00:27:16in the IEEE OUI database. When a device's MAC address begins with00:27:16, that block was registered by Adachi-Syokai — the OUI identifies the maker of the network hardware, which is not always the brand on the device. - // analyst note
- The 24-bit prefix matches on the first three octets. For the literal prefix 00:27:16, the first-byte Group and Local bits are both zero; changing either bit produces a different prefix. The remaining 24 bits permit 16,777,216 possible suffix values, not an inferred device or shipment count. A match indicates the registry assignment only.
About this vendor.
A MAC address beginning 00:27:16 matches an IEEE MA-L assignment registered to Adachi-Syokai Co., Ltd.; the prefix alone does not identify a device type or product. The IEEE record gives the registrant’s country as Japan, but provides no product or deployment details.
This is a 24-bit prefix, so the match is determined by the first three octets: 00:27:16. The remaining 24 bits allow 16,777,216 possible suffix values. That is a count of possible address suffixes, not a count of devices, shipments, or addresses observed in use.
For this exact prefix, the first octet is 00: its Group bit and Local bit are both zero. RFC 7042 describes these bits as having special significance; changing either bit changes the literal prefix and therefore does not match this assignment. A match establishes the registry assignment only, not which device, operating system, current vendor identity, or security state is present.
- Registry and prefix
- MA-L,
00:27:16[Confirmed] — https://standards-oui.ieee.org/oui/oui.csv - Device type
- Unknown; the assignment record does not specify a device category [Unknown] — https://standards-oui.ieee.org/oui/oui.csv
- Company
- Adachi-Syokai Co., Ltd. [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Registry
- MA-L [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Prefix
00:27:16[Confirmed] — https://standards-oui.ieee.org/oui/oui.csv- Country
- Japan [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Device type
- Unknown [Unknown] — https://standards-oui.ieee.org/oui/oui.csv
- Product catalog
- Unknown [Unknown] — https://standards-oui.ieee.org/oui/oui.csv
- Industry
- Unknown [Unknown] — https://standards-oui.ieee.org/oui/oui.csv
- Website
- Unknown [Unknown] — https://standards-oui.ieee.org/oui/oui.csv
- Organization status
- Unknown [Unknown] — https://standards-oui.ieee.org/oui/oui.csv