Accusys, Inc. — MAC prefix identifies registry assignment only

A MAC address beginning 00:06:12 identifies an IEEE MA-L assignment registered to Accusys, Inc.; the supplied evidence does not identify a device type or product using it. A prefix match establishes the registered assignment, not the address’s current user, deployment, or security status.

This is a 24-bit prefix, leaving 24 bits in a 48-bit MAC address. There are 16,777,216 possible suffix values, which is a mathematical address-space count, not a count of devices or shipments. For this exact prefix, the first-byte Group bit and Local bit are both zero. Setting either bit changes the prefix and no longer gives an exact match to 00:06:12.

RFC 7042 describes 48-bit MAC identifiers as an initial OUI or longer assigned prefix followed by additional bits, and explains the significance of the Group and Local bits. The IEEE record lists Accusys, Inc. as the organization name and includes TW in its address field; no country is asserted here. The supplied records document no product-to-prefix mapping.

Vendor

Accusys, Inc. is the organization named in the IEEE MA-L record.

Device type

Unknown; the evidence does not map a device category to this prefix.

Exact prefix

00:06:12 — 24 bits; match the first 24 bits of the MAC address.

Bit interpretation

Group bit 0 and Local bit 0 in the first octet; changing either produces a different prefix.

Possible suffixes

16,777,216 values across the remaining 24 bits; this is not a device count.

Company

Accusys, Inc. [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv

Prefix

00:06:12 (MA-L) [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv

Device type

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

Country

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