What this means
The IEEE assigned the MA-M block A028332 to Shanghai Nohmi Secom Fire Protection Equipment 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 A0:28:33:2, it is Shanghai Nohmi Secom Fire Protection Equipment Co.,Ltd. hardware.
Frequently Asked Questions
Who owns MAC prefix A028332?
A028332 is registered to Shanghai Nohmi Secom Fire Protection Equipment Co.,Ltd. in the IEEE MA-M registry.
What does the MA-M registry type mean?
An MA-M assignment covers 28 bits of the address, giving the vendor 1,048,576 device addresses, a quarter of a full MA-L block. Shanghai Nohmi Secom Fire Protection Equipment Co.,Ltd.'s block covers 1,048,576 addresses.
What devices use A028332?
Any network device with a MAC address starting A0:28:33:2 was manufactured by or for Shanghai Nohmi Secom Fire Protection Equipment Co.,Ltd..