MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
Prefix74:33:36:30:00:00 /28
Vendor addressUnit 301, Building C, Qianwan Key & Core Technology Industrial Park, Xixiang, Bao'an Shenzhen, Guangdong. Shenzhen CN 518103
Country🇨🇳 China
RegisteredOct 10, 2025
Block range74:33:36:30:00:00– 74:33:36:3F: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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74:33:36:20:00:00 /28
Zoller + Fröhlich GmbH
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74:33:36:40:00:00 /28
Elide Interfaces Inc
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Shenzhen DBG Innovation Tech Limited holds 1 registered blocks in the IEEE registry, ranking #26,343 of 33,427 organizations by block count.