What this means
The IEEE assigned the MA-M block 38B19E5 to Star Electronics GmbH & CoKG. 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 38:B1:9E:5, it is Star Electronics GmbH & CoKG hardware.
Frequently Asked Questions
Who owns MAC prefix 38B19E5?
38B19E5 is registered to Star Electronics GmbH & CoKG in the IEEE MA-M registry.
What does the MA-M registry type mean?
An MA-M assignment covers 28 bits of the address, giving the vendor 1,048,576 device addresses, a quarter of a full MA-L block. Star Electronics GmbH & CoKG's block covers 1,048,576 addresses.
What devices use 38B19E5?
Any network device with a MAC address starting 38:B1:9E:5 was manufactured by or for Star Electronics GmbH & CoKG.