What this means
The IEEE assigned the MA-M block A4ED438 to Linseis Messgeraete GmbH. 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 A4:ED:43:8, it is Linseis Messgeraete GmbH hardware.
Frequently Asked Questions
Who owns MAC prefix A4ED438?
A4ED438 is registered to Linseis Messgeraete GmbH 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. Linseis Messgeraete GmbH's block covers 1,048,576 addresses.
What devices use A4ED438?
Any network device with a MAC address starting A4:ED:43:8 was manufactured by or for Linseis Messgeraete GmbH.