What this means
The IEEE assigned the MA-L block 38AB16 to NPO RTT LLC. 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:AB:16, it is NPO RTT LLC hardware.
Frequently Asked Questions
Who owns MAC prefix 38AB16?
38AB16 is registered to NPO RTT LLC 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. NPO RTT LLC's block covers 16,777,216 addresses.
What devices use 38AB16?
Any network device with a MAC address starting 38:AB:16 was manufactured by or for NPO RTT LLC.