A-Four Tech Co., Ltd. MAC prefix: vendor assignment; device unknown

A MAC address beginning 00:1A:40 matches an IEEE MA-L assignment to A-FOUR TECH CO., LTD.; the assignment alone does not identify a device model or prove which vendor deployed a captured address. The company’s official catalog lists mice, keyboards, desktops, audio products, webcams, USB hubs, mouse pads, laser pens, and microphones, but does not map those products to this prefix.

00:1A:40 is a 24-bit prefix, leaving 24 bits for suffix values: 16,777,216 possible values, not a count of devices or shipments. Its first octet is 00: Group bit 0 and Local bit 0 are fixed for an exact match. Changing either bit produces a different prefix. RFC 7042 describes these address bits and the use of longer assigned prefixes.

The company’s official contact page identifies its Taiwan headquarters as A-Four Tech Co., Ltd. and separately names a China factory and a USA branch company. Those listings do not establish that those separately named entities hold this IEEE assignment.

Registry match

00:1A:40 is assigned to A-FOUR TECH CO., LTD. in MA-L. [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv

Device identification

The prefix does not establish a specific device category or model. [Unknown] — https://standards-oui.ieee.org/oui/oui.csv

Country context

The official contact page identifies a Taiwan headquarters for A-Four Tech Co., Ltd. [Confirmed] — https://www.a4tech.com/contactUs.aspx

Company

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

Registry

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

Prefix

00:1A:40 [Confirmed] — https://standards-oui.ieee.org/oui/oui.csv

Total prefixes

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

Country

Taiwan [Confirmed] — https://www.a4tech.com/contactUs.aspx

Industry

Computer peripherals and consumer audio/video products, based on the company’s listed catalog categories. [Confirmed] — https://www.a4tech.com/contactUs.aspx

Notable products

Mice, keyboards, desktops, headphones, TWS earphones, webcams, USB hubs, mouse pads, laser pens, and microphones; no product-to-prefix mapping is stated. [Confirmed] — https://www.a4tech.com/contactUs.aspx

Device types mapped to this prefix

Unknown [Unknown] — https://www.a4tech.com/contactUs.aspx

Assignment dates

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