MA-S: a /36 block (also called an OUI-36 assignment), IEEE's smallest, covering 4,096 addresses.
Prefix8C:1F:64:DE:70:00 /36
Vendor addressRoom F516, 2nd Floor, Unit 2, Building 2, No. 24 Jishan New Road Street, Tianhe District, Guangzhou City, Guangdong Province, China Guangzhou Guangdong CN 510000
Country🇨🇳 China
RegisteredJul 14, 2026
Block range8C:1F:64:DE:70:00– 8C:1F:64:DE:7F: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
Previous
8C:1F:64:DE:60:00 /36
IHI Inspection & Instrumentation Co.,Ltd.
Next
8C:1F:64:DE:90:00 /36
EON Technology, Corp
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Guangzhou Mofiu Technology Co., Ltd holds 1 registered blocks in the IEEE registry, ranking #14,173 of 33,427 organizations by block count.