What this means
The IEEE assigned the MA-L block B4A5EF to Sercomm Corporation.. 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 B4:A5:EF, it is Sercomm Corporation. hardware.
Frequently Asked Questions
Who owns MAC prefix B4A5EF?
B4A5EF is registered to Sercomm Corporation. 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. Sercomm Corporation.'s block covers 16,777,216 addresses.
What devices use B4A5EF?
Any network device with a MAC address starting B4:A5:EF was manufactured by or for Sercomm Corporation..