What this means
The IEEE assigned the MA-L block 00193D to GMC Guardian Mobility Corp.. 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 00:19:3D, it is GMC Guardian Mobility Corp. hardware.
Frequently Asked Questions
Who owns MAC prefix 00193D?
00193D is registered to GMC Guardian Mobility Corp. 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. GMC Guardian Mobility Corp.'s block covers 16,777,216 addresses.
What devices use 00193D?
Any network device with a MAC address starting 00:19:3D was manufactured by or for GMC Guardian Mobility Corp..