What this means
The IEEE assigned the MA-M block 1CA0D3A to DSM Messtechnik 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 1C:A0:D3:A, it is DSM Messtechnik GmbH hardware.
Frequently Asked Questions
Who owns MAC prefix 1CA0D3A?
1CA0D3A is registered to DSM Messtechnik 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. DSM Messtechnik GmbH's block covers 1,048,576 addresses.
What devices use 1CA0D3A?
Any network device with a MAC address starting 1C:A0:D3:A was manufactured by or for DSM Messtechnik GmbH.