MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
PrefixC4:83:72:10:00:00 /28
Vendor addressRoom 202-207, Building A7, Tianliao Industrial Zone, Xueyuan Avenue, Taoyuan Street, Nanshan District Shenzhen Guangdong CN 518071
Country🇨🇳 China
RegisteredJul 13, 2022
Block rangeC4:83:72:10:00:00– C4:83:72:1F: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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C4:83:72:00:00:00 /28
Compumedics Germany GmbH
Next
C4:83:72:20:00:00 /28
AI-RIDER CORPORATION
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Shenzhen King Will Technology Co., LTD holds 1 registered blocks in the IEEE registry, ranking #26,623 of 33,421 organizations by block count.