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:59:74:90:00:00 /28
Vendor address1001,21#,No.1158 Zhongxin RD,Songjiang district Shanghai shanghai CN 201614
Country🇨🇳 China
RegisteredFeb 19, 2022
Block range1C:59:74:90:00:00– 1C:59:74:9F: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:59:74:80:00:00 /28
Topway Global Technology Limited
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1C:59:74:A0:00:00 /28
Viridi Parente, Inc.
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Shanghai Laisi Information Technology Co.,Ltd holds 2 registered blocks in the IEEE registry, ranking #2,956 of 33,427 organizations by block count.
Other blocks registered to Shanghai Laisi Information Technology Co.,Ltd