MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
Prefix5C:85:7E:40:00:00 /28
Vendor address[email protected] Shenzhen CN 518057
Country🇨🇳 China
RegisteredMay 22, 2020
Block range5C:85:7E:40:00:00– 5C:85:7E:4F: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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5C:85:7E:30:00:00 /28
Cable Matters Inc.
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5C:85:7E:50:00:00 /28
Shanghai Yanhe automation technology co.,LTD
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Shenzhen IP3 Century Intelligent Technology CO.,Ltd holds 3 registered blocks in the IEEE registry, ranking #1,288 of 33,427 organizations by block count.
Other blocks registered to Shenzhen IP3 Century Intelligent Technology CO.,Ltd