What this means
The IEEE assigned the MA-L block 00091B to Digital Generation 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 00:09:1B, it is Digital Generation Inc. hardware.
Frequently Asked Questions
Who owns MAC prefix 00091B?
00091B is registered to Digital Generation 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. Digital Generation Inc.'s block covers 16,777,216 addresses.
What devices use 00091B?
Any network device with a MAC address starting 00:09:1B was manufactured by or for Digital Generation Inc..