MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
Prefix8C:5D:B2:20:00:00 /28
Vendor addressPolyarnaya st.31 str.1 Moscow Moscow RU 127282
Country🇷🇺 Russia
RegisteredNov 13, 2022
Block range8C:5D:B2:20:00:00– 8C:5D:B2:2F: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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8C:5D:B2:10:00:00 /28
DAYOUPLUS
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8C:5D:B2:30:00:00 /28
Yuzhou Zhongnan lnformation Technology Co.,Ltd
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
F+ Networks holds 1 registered blocks in the IEEE registry, ranking #12,440 of 33,421 organizations by block count.