What this means
The IEEE assigned the MA-L block 40BD9E to Physio-Control, Inc. 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 40:BD:9E, it is Physio-Control, Inc hardware.
Frequently Asked Questions
Who owns MAC prefix 40BD9E?
40BD9E is registered to Physio-Control, Inc in the IEEE MA-L registry.
What does the MA-L registry type mean?
An MA-L assignment, the IEEE's original OUI format, gives the vendor the first three octets and 16,777,216 device addresses under them. Physio-Control, Inc's block covers 16,777,216 addresses.
What devices use 40BD9E?
Any network device with a MAC address starting 40:BD:9E was manufactured by or for Physio-Control, Inc.