Who owns MAC prefix E4776B?

E4776B is registered to AARTESYS AG in the IEEE MA-L registry.

What devices use E4776B?

Any network device with a MAC address starting E4:77:6B was manufactured by or for AARTESYS AG.

MA-L · OUI prefix

AARTESYS AG

Any MAC address starting E4:77:6B is registered to AARTESYS AG in CH.

OUI prefix	E4776B
Vendor	AARTESYS AG
Registry	MA-L (24-bit, large block)
Country	CH
Example MAC	E4:77:6B:00:00:00

What this means

The IEEE assigned the MA-L block E4776B to AARTESYS AG. 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 E4:77:6B, it is AARTESYS AG hardware.

Look up another MAC