ADVAS CO., LTD. MAC prefix identification: vendor assignment only

A MAC address beginning 70:1A:ED matches the MA-L assignment registered to ADVAS CO., LTD.; the supplied records do not identify a device category or a specific product for this prefix. A match establishes the registered prefix, not the maker of a particular device, its operating system, or its safety status.

This is one 24-bit prefix, leaving 24 bits for suffix values. The arithmetic permits 16,777,216 possible suffix values, but that is a capacity of the address space, not a count of devices, addresses in use, or shipments.

In 70, the Group bit is 0 and the Local bit is 0. For this exact prefix, those bits are fixed: the matching boundary is the first 24 bits (70:1A:ED). Changing either bit changes the prefix and no longer matches this assignment. RFC 7042 explains the distinction between these bits and the assigned organization prefix; bits within the fixed prefix should not be treated as variation within it.

Identification

MA-L assignment to ADVAS CO., LTD.; no device category is identified. [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv

Full assigned prefix

70:1A:ED (24 bits). [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv

Matching boundary

Compare the first 24 bits; the remaining 24 bits have 16,777,216 possible suffix values, not an observed device count. [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv

Group and Local bits

Both are 0 in first octet 70 and fixed for this literal prefix. [Confirmed] — https://www.rfc-editor.org/rfc/rfc7042.txt

Company

ADVAS CO., LTD. [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv

Registry

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

Assigned prefix

70:1A:ED [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv

Device types

Unknown [Unknown]

Country

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

Assignment date

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