What this means
The IEEE assigned the MA-L block 0013B4 to Appear AS. 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 00:13:B4, it is Appear AS hardware.
Frequently Asked Questions
Who owns MAC prefix 0013B4?
0013B4 is registered to Appear AS 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. Appear AS's block covers 16,777,216 addresses.
What devices use 0013B4?
Any network device with a MAC address starting 00:13:B4 was manufactured by or for Appear AS.