MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
Prefix20:2B:DA:70:00:00 /28
Vendor addressNo. 1, 5th Floor, Unit 2, Building 1, Jinqian Port Industrial Park, No. 808, Haier Road, Tieshanping Street, Jiangbei District Chongqing CN 400000
Country🇨🇳 China
RegisteredOct 29, 2025
Block range20:2B:DA:70:00:00– 20:2B:DA:7F: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.
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Example addresses in this block
Where this block sits
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20:2B:DA:60:00:00 /28
Shenzhen FeiCheng Technology Co.,Ltd
Next
20:2B:DA:80:00:00 /28
BRUSH ELECTRICAL MACHINES LTD
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Chongqing Ruishixing Technology Co., Ltd holds 1 registered blocks in the IEEE registry, ranking #8,387 of 33,427 organizations by block count.