ABIT CORPORATION MAC Prefix 00:C0:EF

A MAC address beginning with 00:C0:EF matches an IEEE MA-L assignment registered to ABIT CORPORATION; the record does not identify a device category or product. The match identifies the registered prefix only, not the device’s maker, model, current operator, or security status.

The prefix is 24 bits, leaving 24 bits for the suffix. That permits 16,777,216 possible suffix values, which is a mathematical range, not a count of devices or shipments. For this exact prefix, the first-byte Group bit and Local bit are both zero. Changing either bit changes the prefix and is not a variation within this fixed assignment.

RFC 7042 says the Group bit distinguishes group from individual MAC identifiers and notes that OUIs and longer prefixes are assigned with the Local bit zero. Compare all first three octets for an exact 24-bit match. The available IEEE CSV record contains no assignment date.

Matching prefix

00:C0:EF (24 bits) [Confirmed]

Device or product identification

Unknown [Unknown]

Country

Japan, indicated by JP in the IEEE record [Confirmed]

Company

ABIT CORPORATION [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv

Prefix

00:C0:EF [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv

Registry

MA-L [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv

Country

Japan [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv

Assignment date

Unavailable in this IEEE CSV record [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv

Group and Local bit interpretation

RFC 7042 describes these bits and the prefix structure [Confirmed] — https://www.rfc-editor.org/rfc/rfc7042.txt