Shenzhen Rui jiali Electronic Technology 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.
Prefix18:FD:CB:00:00:00 /28
Vendor address306 ROOM,Building B, ShenZhaoYe Science Park, BaoLong 5 Road No. 1,Baolong Industrial City ,Pingshan District Shenzhen CN 518118
Country🇨🇳 China
Block range18:FD:CB:00:00:00– 18:FD:CB:0F: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