MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
PrefixC4:A1:0E:60:00:00 /28
Vendor addressRoom 1502,15th Floor,Building 20,NO.487 Tianlin Road,Shanghai,200233 China Shanghai Shanghai CN 200233
Country🇨🇳 China
RegisteredMar 10, 2022
Block rangeC4:A1:0E:60:00:00– C4:A1:0E:6F: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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C4:A1:0E:50:00:00 /28
O-NET Industrial Technologies (Shenzhen) Limited
Next
C4:A1:0E:70:00:00 /28
Guangzhou South Satellite Navigation Instrument Co., Ltd.
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Hainan World Electronic Science and Techology Co.,Ltd holds 1 registered blocks in the IEEE registry, ranking #14,310 of 33,427 organizations by block count.