MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
PrefixC4:A5:59:30:00:00 /28
Vendor addressth Floor,Building 2,Xinyu Electronic Industrial Park,No.69, Zhaishan,Houshan Village, High-tech Zone,Fuzhou,Fujian ,China Fuzhou CN 350000
Country🇨🇳 China
RegisteredOct 26, 2022
Block rangeC4:A5:59:30:00:00– C4:A5:59:3F: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
Where this block sits
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C4:A5:59:20:00:00 /28
SHENZHEN ORFA TECH CO., LTD
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C4:A5:59:40:00:00 /28
National Company of Telecommunication and Information Security
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
X-speed lnformation Technology Co.,Ltd holds 3 registered blocks in the IEEE registry, ranking #1,400 of 33,427 organizations by block count.
Other blocks registered to X-speed lnformation Technology Co.,Ltd