What this means
The IEEE assigned the MA-L block 70B921 to Fiberhome Telecommunication 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 70:B9:21, it is Fiberhome Telecommunication Technologies Co.,LTD hardware.
Frequently Asked Questions
Who owns MAC prefix 70B921?
70B921 is registered to Fiberhome Telecommunication 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. Fiberhome Telecommunication Technologies Co.,LTD's block covers 16,777,216 addresses.
What devices use 70B921?
Any network device with a MAC address starting 70:B9:21 was manufactured by or for Fiberhome Telecommunication Technologies Co.,LTD.