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:A4:D0:80:00:00 /28
Vendor address（Room 501,Building 10, Area 2, Headquarters Base）NO.188,South 4th Ring West Road, Fengtai District Beijing Beijing CN 100070
Country🇨🇳 China
RegisteredOct 16, 2016
Block range50:A4:D0:80:00:00– 50:A4:D0:8F: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:A4:D0:70:00:00 /28
Shanghai Pujiang Smart Card Systems Co., Ltd.
Next
50:A4:D0:90:00:00 /28
OEM PRODUCTION INC.
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
XinLian'AnBao（Beijing）Technology Co.，LTD. holds 1 registered blocks in the IEEE registry, ranking #32,744 of 33,427 organizations by block count.