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:C3:40:00:00 /28
Vendor address中国（四川）自由贸易试验区成都高新区益州大道中段1800号4栋2楼202室 成都 CN 610000
Country🇨🇳 China
RegisteredApr 16, 2025
Block rangeDC:76:C3:40:00:00– DC:76:C3:4F: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
Previous
DC:76:C3:30:00:00 /28
Shanghai Kanghai Information System CO.,LTD.
Next
DC:76:C3:50:00:00 /28
heinrich corporation India private limited
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
seadee holds 1 registered blocks in the IEEE registry, ranking #25,451 of 33,427 organizations by block count.