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