MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
PrefixA4:3A:39:00:00:00 /24
Vendor addressROOM 1006, BLOCK B, QIANHAI ECONOMIC AND TRADE CENTER, CHINA MERCHANTS GROUP, NO.151 WEST FREE TRADE STREET, QIANHAI, SHENZHEN CN 518000
Country🇨🇳 China
RegisteredAug 15, 2025
Block rangeA4:3A:39:00:00:00– A4:3A:39:FF:FF:FF
Address capacity16,777,216
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.
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Example addresses in this block
Where this block sits
AURORA TECHNOLOGIES CO.,LTD. holds 1 registered blocks in the IEEE registry, ranking #5,916 of 33,421 organizations by block count.