Who owns MAC prefix AC81B5?

AC81B5 is registered to Accton Technology Corporation in the IEEE MA-L registry.

What devices use AC81B5?

Any network device with a MAC address starting AC:81:B5 was manufactured by or for Accton Technology Corporation.

MA-L · OUI prefix

Accton Technology Corporation

Any MAC address starting AC:81:B5 is registered to Accton Technology Corporation in TW.

OUI prefix	AC81B5
Vendor	Accton Technology Corporation
Registry	MA-L (24-bit, large block)
Country	TW
Example MAC	AC:81:B5:00:00:00

What this means

The IEEE assigned the MA-L block AC81B5 to Accton Technology Corporation. Every network interface they manufacture under this block has a MAC address beginning with these digits, followed by a unique per-device identifier. If a device on your network shows a MAC starting AC:81:B5, it is Accton Technology Corporation hardware.

Other Accton Technology Corporation prefixes

Accton Technology Corporation holds 12 registered blocks in total.

1C4A3B 2C0369 54BB8F 5C4097 90D529 9C4711 B46F78 BC121F CCDD28 D08E17 FC3D98

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