MA-S: a /36 block (also called an OUI-36 assignment), IEEE's smallest, covering 4,096 addresses.
Prefix8C:1F:64:38:20:00 /36
Vendor address4F?Block 3, Fushijie Industry Park, Dalang District, Shenzhen Guangdong CN 518110
Country🇨🇳 China
RegisteredJul 9, 2021
Block range8C:1F:64:38:20:00– 8C:1F:64:38:2F: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:64:38:10:00 /36
TimeMachines Inc.
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8C:1F:64:38:30:00 /36
Urbidermis, S.L. (VAT ESB66435017)
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Shenzhen ROLSTONE Technology Co., Ltd holds 2 registered blocks in the IEEE registry, ranking #3,025 of 33,421 organizations by block count.
Other blocks registered to Shenzhen ROLSTONE Technology Co., Ltd