Shanghai BST Electric Co.,ltd MA-M
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:47:A9:10:00:00 /28
Vendor addressNo.1 hangqi Rd, Damaiwan Industrial Zone, Hangtou, Pudong, New Area, Shanghai 201316, China Shanghai CN 201316
Block range0C:47:A9:10:00:00– 0C:47:A9:1F: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