Advanced Cybernetics Group: MAC prefix identifies the registry assignee

A MAC address beginning 00:12:CE matches an IEEE MA-L assignment to Advanced Cybernetics Group; the record does not identify a device, product, or deployment. The assignment covers the first 24 bits, leaving 24 bits in the address after the prefix.

For this literal prefix, the first octet is 00, so its Group bit and Local bit are both 0. The supplied RFC 7042 excerpt identifies those as the two significant bits in the initial octet of a MAC address. A match on 00:12:CE therefore has those bit values fixed; changing either bit produces a different prefix and is outside this exact match.

The remaining 24 bits allow 16,777,216 possible suffix values. That is an address-space calculation, not a count of devices, shipments, or observed addresses. A prefix match supports identification of the registry assignment only; it does not establish which specific device or system used the address.

Assignment

00:12:CE (MA-L, 24-bit prefix) [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv

Device or product

Unknown; the supplied record does not map this prefix to a device or product [Unknown] — https://standards-oui.ieee.org/oui/oui.csv

Company

Advanced Cybernetics Group [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv

Registry

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

Prefixes

00:12:CE [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv

Country

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

Assignment dates

Assignment dates are unavailable in these IEEE CSV records. [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv

Device types

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