What this means
The IEEE assigned the MA-L block 28B4FB to Sprocomm Technologies 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 28:B4:FB, it is Sprocomm Technologies CO.,LTD. hardware.
Frequently Asked Questions
Who owns MAC prefix 28B4FB?
28B4FB is registered to Sprocomm Technologies 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. Sprocomm Technologies CO.,LTD.'s block covers 16,777,216 addresses.
What devices use 28B4FB?
Any network device with a MAC address starting 28:B4:FB was manufactured by or for Sprocomm Technologies CO.,LTD..