What this means
The IEEE assigned the MA-L block 50139D to Sierra Wireless, ULC. 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 50:13:9D, it is Sierra Wireless, ULC hardware.
Frequently Asked Questions
Who owns MAC prefix 50139D?
50139D is registered to Sierra Wireless, ULC 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. Sierra Wireless, ULC's block covers 16,777,216 addresses.
What devices use 50139D?
Any network device with a MAC address starting 50:13:9D was manufactured by or for Sierra Wireless, ULC.