Kyung In Electronics MAC Prefixes: Device Unknown
Summary
- // what this is
- Kyung In Electronics is registered to MAC prefix
A0:3B:01and 2 more in the IEEE OUI database. When a device's MAC address begins withA0:3B:01, that block was registered by Kyung In Electronics — the OUI identifies the maker of the network hardware, which is not always the brand on the device. - // analyst note
- A0:3B:01 and 34:28:44 each fix 24 bits and leave 24 suffix bits (16,777,216 possible values); A0:22:4E:0/28 fixes 28 bits and leaves 20 suffix bits (1,048,576 possible values). All have Group bit 0 and Local bit 0. RFC 7042 describes these bits; exact prefix matches hold them fixed. Suffix possibilities are not device or shipment counts. A prefix match supports the registry assignment only, not a particular device identity or security state.
About this vendor.
A MAC address beginning with one of these prefixes identifies an IEEE registry assignment to Kyung In Electronics; the supplied evidence does not identify a device type or product for any exact prefix. The records show three assignments across MA-L and MA-M, with no assignment dates displayed.
The two MA-L prefixes are A0:3B:01 and 34:28:44; each fixes the first 24 bits, leaving 24 suffix bits and 16,777,216 possible suffix values. The MA-M prefix A0:22:4E:0/28 fixes 28 bits, leaving 20 suffix bits and 1,048,576 possible suffix values. These are mathematical ranges, not device, shipment, or observed-address counts.
All three prefixes have Group bit 0 and Local bit 0 in the first byte. RFC 7042 explains that these bits distinguish group and local addressing. An exact prefix match therefore has those bits fixed; changing either bit produces a different prefix. A match supports the registry assignment only, not the identity, operating system, current legal status, or security state of a particular device. The supplied registry rows identify the country as KR.
- Device type
- Unknown [Unknown] — https://standards-oui.ieee.org/oui/oui.csv
- Registry
- MA-L / MA-M [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv; https://standards-oui.ieee.org/oui28/mam.csv
- Prefixes
A0:3B:01,34:28:44[Confirmed] — https://standards-oui.ieee.org/oui/oui.csv- Prefix
A0:22:4E:0/28[Confirmed] — https://standards-oui.ieee.org/oui28/mam.csv- Assignment dates
- Assignment dates are unavailable in these IEEE CSV records. [Unknown] — https://standards-oui.ieee.org/oui/oui.csv