What this means
The IEEE assigned the MA-L block AC203E to Wuhan Tianyu Information Industry Co., Ltd.. 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 AC:20:3E, it is Wuhan Tianyu Information Industry Co., Ltd. hardware.
Frequently Asked Questions
Who owns MAC prefix AC203E?
AC203E is registered to Wuhan Tianyu Information Industry Co., Ltd. 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. Wuhan Tianyu Information Industry Co., Ltd.'s block covers 16,777,216 addresses.
What devices use AC203E?
Any network device with a MAC address starting AC:20:3E was manufactured by or for Wuhan Tianyu Information Industry Co., Ltd..