ACOGITO Co., Ltd: MAC prefix identifies a registry assignment; device unknown

A MAC address beginning 00:19:52 matches the IEEE MA-L assignment to ACOGITO Co., Ltd. The assignment identifies the registered holder of this prefix; supplied evidence does not identify a device category or show which products, if any, use it.

This is a 24-bit prefix, leaving 24 suffix bits, or 16,777,216 possible suffix values. That is a mathematical address space, not a count of devices, shipments, or observed addresses. An exact prefix match establishes only that the address begins with the assigned value.

For 00:19:52, the first octet is 00: its Group bit and Local bit are both zero. Those bits are fixed for this exact literal prefix; changing either produces a different prefix. RFC 7042 explains the interpretation of these bits and the structure of MAC identifiers. The supplied record contains no assignment date.

Identification

00:19:52 is assigned to ACOGITO Co., Ltd; device type is not established. [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv

Registry

MA-L; one full prefix: 00:19:52. [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv

Address interpretation

24 prefix bits and 24 suffix bits yield 16,777,216 possible suffix values; Group and Local bits are both zero for this literal prefix. This does not establish device count. [Confirmed] — https://www.rfc-editor.org/rfc/rfc7042.txt

Company

ACOGITO Co., Ltd [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv

Registry

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

Prefixes

00:19:52 [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv

Device types

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

Country

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