MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
Prefix8C:51:09:40:00:00 /28
Vendor addressRoom B508,Building B,Gaoxingqi Industrial Park,Liuxian 1st Road,District 67,Bao'an Shenzhen Guangdong CN 518100
Country🇨🇳 China
RegisteredApr 7, 2022
Block range8C:51:09:40:00:00– 8C:51:09:4F: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
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8C:51:09:30:00:00 /28
SHENZHEN LDROBOT CO., LTD.
Next
8C:51:09:50:00:00 /28
Heliox Automotive B.V.
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Shenzhen WOWOTO Technology Co., Ltd. holds 1 registered blocks in the IEEE registry, ranking #27,027 of 33,427 organizations by block count.