What this means
The IEEE assigned the MA-L block E838A0 to Vizio, 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 E8:38:A0, it is Vizio, Inc hardware.
Frequently Asked Questions
Who owns MAC prefix E838A0?
E838A0 is registered to Vizio, 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. Vizio, Inc's block covers 16,777,216 addresses.
What devices use E838A0?
Any network device with a MAC address starting E8:38:A0 was manufactured by or for Vizio, Inc.