MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
PrefixF4:3A:FA:40:00:00 /28
Vendor addressRoom 201,Building A,No.1,Qianwan Road, Qianhai Shenzhen-Hong Kong cooperation zone,Shenzhen China(in Shenzhen Qianhai business secretary Co.,Ltd.) Shenzhen Guangdong CN 518000
Country🇨🇳 China
RegisteredAug 15, 2024
Block rangeF4:3A:FA:40:00:00– F4:3A:FA: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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F4:3A:FA:30:00:00 /28
Jiaxing Haishijiaan Smartcity Technology CO., LTD.
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F4:3A:FA:50:00:00 /28
Grayeye IT Systems Private Limited
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Aifrutech Co.,LTD holds 1 registered blocks in the IEEE registry, ranking #4,439 of 33,421 organizations by block count.