MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
Prefix1C:87:74:50:00:00 /28
Vendor addressD9G Fuhua Plaza, 8# North Street, Chaoyangmen, Dongcheng District Beijing Beijing CN 100027
Country🇨🇳 China
RegisteredOct 31, 2015
Block range1C:87:74:50:00:00– 1C:87:74:5F: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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1C:87:74:40:00:00 /28
Weber Marking Systems GmbH
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1C:87:74:60:00:00 /28
Schawbel Technologies LLC
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Xiaoxinge (Tangshan) Electronic Technology Co., Ltd. holds 1 registered blocks in the IEEE registry, ranking #32,724 of 33,427 organizations by block count.