What this means
The IEEE assigned the MA-M block 38B8EB9 to NHS Sistemas de Energia. 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:B8:EB:9, it is NHS Sistemas de Energia hardware.
Frequently Asked Questions
Who owns MAC prefix 38B8EB9?
38B8EB9 is registered to NHS Sistemas de Energia 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. NHS Sistemas de Energia's block covers 1,048,576 addresses.
What devices use 38B8EB9?
Any network device with a MAC address starting 38:B8:EB:9 was manufactured by or for NHS Sistemas de Energia.