Who owns MAC prefix B4AC9D?

B4AC9D is registered to Texas Instruments in the IEEE MA-L registry.

What devices use B4AC9D?

Any network device with a MAC address starting B4:AC:9D was manufactured by or for Texas Instruments.

MA-L · OUI prefix

Texas Instruments

Any MAC address starting B4:AC:9D is registered to Texas Instruments in US.

OUI prefix	B4AC9D
Vendor	Texas Instruments
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	B4:AC:9D:00:00:00

What this means

The IEEE assigned the MA-L block B4AC9D to Texas Instruments. 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 B4:AC:9D, it is Texas Instruments hardware.

Other Texas Instruments prefixes

Texas Instruments holds 393 registered blocks in total.

001237 00124B 0012D1 0012D2 001783 0017E3 0017EA 0017EB 0017EC 00182F 001830 001831 all 393 »

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