MA-S: a /36 block (also called an OUI-36 assignment), IEEE's smallest, covering 4,096 addresses.
Prefix8C:1F:64:D1:80:00 /36
Vendor address8th Floor, Building A, Huadong Mansion. No. 688 Hubin Road Binhu District Wuxi City CN 214026
Country🇨🇳 China
RegisteredFeb 13, 2025
Block range8C:1F:64:D1:80:00– 8C:1F:64:D1:8F:FF
Address capacity4,096
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:1F:64:D1:70:00 /36
I.S.A. - Altanova group srl
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8C:1F:64:D1:90:00 /36
YNM SYSTEMS INC.
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Wuxi Tongxin Hengtong Technology Co., Ltd. holds 1 registered blocks in the IEEE registry, ranking #32,564 of 33,427 organizations by block count.