MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
Prefix50:0B:91:D0:00:00 /28
Vendor address201A, BLOCK 10 ROW 1, SHANGTUN VILLAGE HESHUIKOU COMMUNITY,GO NGMING STREET, GUANGMING DISTRICT SHENZHEN GUANGDONG CN 518107
Country🇨🇳 China
RegisteredAug 28, 2016
Block range50:0B:91:D0:00:00– 50:0B:91: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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50:0B:91:C0:00:00 /28
Diamond Traffic Products, Inc
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50:0B:91:E0:00:00 /28
Shenzhen zhong ju Fiber optical Co.Ltd
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Shenzhen Lucky Sonics Co .,Ltd holds 1 registered blocks in the IEEE registry, ranking #26,694 of 33,427 organizations by block count.