What this means
The IEEE assigned the MA-L block 004040 to RING ACCESS, 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 00:40:40, it is RING ACCESS, INC. hardware.
Frequently Asked Questions
Who owns MAC prefix 004040?
004040 is registered to RING ACCESS, 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. RING ACCESS, INC.'s block covers 16,777,216 addresses.
What devices use 004040?
Any network device with a MAC address starting 00:40:40 was manufactured by or for RING ACCESS, INC..