MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
PrefixD4:BA:BA:B0:00:00 /28
Vendor address3 Building, Qingdao Research Institute of Beihang University, No. 393 Songling Road, Laoshan District Qingdao Shandong CN 266000
Country🇨🇳 China
RegisteredJul 17, 2022
Block rangeD4:BA:BA:B0:00:00– D4:BA:BA:BF: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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D4:BA:BA:A0:00:00 /28
Actiontec Electronics Inc.
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D4:BA:BA:C0:00:00 /28
Rusatom Automated Control Systems, Joint-Stock Company
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Qingdao Vzense Technology Co., Ltd. holds 1 registered blocks in the IEEE registry, ranking #23,822 of 33,421 organizations by block count.