MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
PrefixF4:20:55:D0:00:00 /28
Vendor addressNo.52, Zone C, Huigu Pioneer Park, Huishan Economic Development Zone, Wuxi Wuxi jiangsu CN 214174
Country🇨🇳 China
RegisteredJun 22, 2024
Block rangeF4:20:55:D0:00:00– F4:20:55:DF: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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F4:20:55:C0:00:00 /28
Shenzhen Guangjian Technology Co.,Ltd
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F4:20:55:E0:00:00 /28
Shenzhen Keyking Technology Limited
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Wuxi Sunning Smart Devices Co.,Ltd holds 3 registered blocks in the IEEE registry, ranking #1,399 of 33,427 organizations by block count.
Other blocks registered to Wuxi Sunning Smart Devices Co.,Ltd