Who owns MAC prefix D40AA9?

D40AA9 is registered to Commscope in the IEEE MA-L registry.

What devices use D40AA9?

Any network device with a MAC address starting D4:0A:A9 was manufactured by or for Commscope.

MA-L · OUI prefix

Commscope

Any MAC address starting D4:0A:A9 is registered to Commscope in US.

OUI prefix	D40AA9
Vendor	Commscope
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	D4:0A:A9:00:00:00

What this means

The IEEE assigned the MA-L block D40AA9 to Commscope. 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 D4:0A:A9, it is Commscope hardware.

Other Commscope prefixes

Commscope holds 345 registered blocks in total.

0000C5 0000CA 0003E0 0004BD 00080E 000B06 000CE5 000E5C 000F9F 000FCC 00111A 001180 all 345 »

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