Shenzhen Shengyuan Tech 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.
PrefixF8:8A:3C:30:00:00 /28
Vendor addressScience and Technology Park North District, high tech North six Road, LAN LAN Technology Park, building C-309,Shenzhen Nanshan District, Guangdong Province, China shenzhen guangdong CN 518000
Block rangeF8:8A:3C:30:00:00– F8:8A:3C:3F: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