What this means
The IEEE assigned the MA-L block 4011DC to Sonance. 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 40:11:DC, it is Sonance hardware.
Frequently Asked Questions
Who owns MAC prefix 4011DC?
4011DC is registered to Sonance 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. Sonance's block covers 16,777,216 addresses.
What devices use 4011DC?
Any network device with a MAC address starting 40:11:DC was manufactured by or for Sonance.