Who owns MAC prefix A4C138?

A4C138 is registered to Telink Semiconductor (Taipei) Co. Ltd. in the IEEE MA-L registry.

What devices use A4C138?

Any network device with a MAC address starting A4:C1:38 was manufactured by or for Telink Semiconductor (Taipei) Co. Ltd..

MA-L · OUI prefix

Telink Semiconductor (Taipei) Co. Ltd.

Any MAC address starting A4:C1:38 is registered to Telink Semiconductor (Taipei) Co. Ltd. in TW.

OUI prefix	A4C138
Vendor	Telink Semiconductor (Taipei) Co. Ltd.
Registry	MA-L (24-bit, large block)
Country	TW
Example MAC	A4:C1:38:00:00:00

What this means

The IEEE assigned the MA-L block A4C138 to Telink Semiconductor (Taipei) Co. Ltd.. 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 A4:C1:38, it is Telink Semiconductor (Taipei) Co. Ltd. hardware.

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