MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
PrefixDC:76:C3:C0:00:00 /28
Vendor addressNo.3 Taihong Road, Yushan Town, Kunshan City Jiangsu Province CN 215399
Country🇨🇳 China
RegisteredApr 10, 2025
Block rangeDC:76:C3:C0:00:00– DC:76:C3:CF: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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DC:76:C3:B0:00:00 /28
NCE Network Consulting Engineering srl
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DC:76:C3:D0:00:00 /28
Chen Uei Precision Industry Co., Ltd
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Kunshan QTech Smart-Forward Limited holds 1 registered blocks in the IEEE registry, ranking #17,993 of 33,427 organizations by block count.