Who owns MAC prefix E4A387?

E4A387 is registered to Control Solutions LLC in the IEEE MA-L registry.

What devices use E4A387?

Any network device with a MAC address starting E4:A3:87 was manufactured by or for Control Solutions LLC.

MA-L · OUI prefix

Control Solutions LLC

Any MAC address starting E4:A3:87 is registered to Control Solutions LLC in US.

OUI prefix	E4A387
Vendor	Control Solutions LLC
Registry	MA-L (24-bit, large block)
Country	US
Example MAC	E4:A3:87:00:00:00

What this means

The IEEE assigned the MA-L block E4A387 to Control Solutions LLC. 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 E4:A3:87, it is Control Solutions LLC hardware.

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