MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
Prefix64:31:39:60:00:00 /28
Vendor addressState Industrialpark, Jiulong Development Zone, Yanling County Zhuzhou Hunan CN 412500
Country🇨🇳 China
RegisteredSep 7, 2019
Block range64:31:39:60:00:00– 64:31:39:6F: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
Previous
64:31:39:50:00:00 /28
Shenzhen He&e Technology Co.,Ltd.
Next
64:31:39:70:00:00 /28
Dongguan Huili electroacoustic Industrial Co.,ltd
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Hunan Voc Acoustics Technology Co., Ltd. holds 2 registered blocks in the IEEE registry, ranking #2,217 of 33,427 organizations by block count.
Other blocks registered to Hunan Voc Acoustics Technology Co., Ltd.