MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
Prefix0C:BF:B4:50:00:00 /28
Vendor address5th Floor, Building 1, Liandong U Valley, No. 97, Xingguan Road, Industrial Park, Jiading District, Shanghai Shanghai CN 201800
Country🇨🇳 China
RegisteredOct 23, 2025
Block range0C:BF:B4:50:00:00– 0C:BF:B4:5F:FF:FF
Address capacity1,048,576
AdministrationUniversally administered: its prefix comes from a block registered through the IEEE Registration Authority
TransmissionUnicast: addressed to a single device
SourceIEEE Registration Authority
Address capacity is the size of this registered block, not a count of devices actually manufactured or online. Registration identifies the organization holding the block, not a specific device model or unit.
Curious how a prefix like this turns into a full address? See how MAC addresses are structured →
Example addresses in this block
Where this block sits
Previous
0C:BF:B4:40:00:00 /28
Shenzhen EN Plus Tech Co.,Ltd.
Next
0C:BF:B4:60:00:00 /28
Prolight Concepts (UK) Ltd
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
ICWiser holds 1 registered blocks in the IEEE registry, ranking #15,553 of 33,427 organizations by block count.