00:03:82 identifies an IEEE assignment to A-One Co., Ltd.; device unknown
Summary
- // what this is
- A-One is registered to MAC prefix
00:03:82in the IEEE OUI database. When a device's MAC address begins with00:03:82, that block was registered by A-One — the OUI identifies the maker of the network hardware, which is not always the brand on the device. - // analyst note
- A prefix match identifies a registry assignment, not a particular device, deployment, or security state. For
00:03:82, the 24-bit matching boundary leaves 24 suffix bits, or 16,777,216 possible suffix values; this is not an observed device or shipment count. The Group and Local bits in the first byte are both zero and fixed for an exact prefix match.
About this vendor.
A MAC address beginning 00:03:82 matches an IEEE MA-L assignment to A-One Co., Ltd. The record identifies the assignee, but does not identify a device category or show that a particular product uses the prefix. A match establishes the registered prefix only; it does not establish who deployed an address, where it was observed, or its security status.
This is a 24-bit prefix in a 48-bit MAC address, leaving 24 bits for suffix values. The first byte is 00: its Group bit and Local bit are both zero, and those bits are fixed for an exact 00:03:82 prefix match. Changing either bit produces a different prefix. The 16,777,216 possible suffix values describe address space, not a count of devices or shipments. RFC 7042 describes the significance of these MAC address bits.
The supplied IEEE registry record lists Japan (JP) in the assignee address for A-One Co., Ltd. The retrieved registry evidence shows one MA-L assignment for this profile; it does not establish a broader company-wide total.
- Matching prefix
00:03:82(MA-L, 24 bits)- Device identification
- Unknown from the supplied registry evidence; it does not identify a device category for this prefix.
- Country
- Japan (
JP) in the supplied IEEE record.
- Company
- A-One Co., Ltd. [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Registry
- MA-L [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv
- Assigned prefix
00:03:82[Confirmed] — https://standards-oui.ieee.org/oui/oui.csv- Country
- Japan (
JP) [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv - Website
- Unknown — the supplied evidence does not establish a website associated with the IEEE assignee.
- Device type
- Unknown [Unknown] — https://standards-oui.ieee.org/oui/oui.csv