What this means
The IEEE assigned the MA-L block 00038A to America Online, 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 00:03:8A, it is America Online, Inc. hardware.
Frequently Asked Questions
Who owns MAC prefix 00038A?
00038A is registered to America Online, 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. America Online, Inc.'s block covers 16,777,216 addresses.
What devices use 00038A?
Any network device with a MAC address starting 00:03:8A was manufactured by or for America Online, Inc..