MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
Prefix78:5E:E8:90:00:00 /28
Vendor addressNanshan Shenzhen Guangdong CN 518000
Country🇨🇳 China
RegisteredJul 2, 2021
Block range78:5E:E8:90:00:00– 78:5E:E8:9F: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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78:5E:E8:80:00:00 /28
Jiangxi guoxuan radio and television technology Co.,Ltd
Next
78:5E:E8:A0:00:00 /28
Yake (Tianjin) Technology Co.,Ltd.
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
TOPDON TECHNOLOGY Co.,Ltd. holds 2 registered blocks in the IEEE registry, ranking #3,277 of 33,421 organizations by block count.
Other blocks registered to TOPDON TECHNOLOGY Co.,Ltd.