What this means
The IEEE assigned the MA-L block 903FC3 to Huawei Device 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 90:3F:C3, it is Huawei Device Co., Ltd. hardware.
Frequently Asked Questions
Who owns MAC prefix 903FC3?
903FC3 is registered to Huawei Device 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. Huawei Device Co., Ltd.'s block covers 16,777,216 addresses.
What devices use 903FC3?
Any network device with a MAC address starting 90:3F:C3 was manufactured by or for Huawei Device Co., Ltd..