Who owns MAC prefix E81863E?

E81863E is registered to Acopian Technical Company in the IEEE MA-M registry.

What devices use E81863E?

Any network device with a MAC address starting E8:18:63:E was manufactured by or for Acopian Technical Company.

MA-M · OUI prefix

Acopian Technical Company

Any MAC address starting E8:18:63:E is registered to Acopian Technical Company in US.

OUI prefix	E81863E
Vendor	Acopian Technical Company
Registry	MA-M (28-bit, medium block)
Country	US
Example MAC	E8:18:63:E:00:00:00

What this means

The IEEE assigned the MA-M block E81863E to Acopian Technical Company. 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 E8:18:63:E, it is Acopian Technical Company hardware.

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