MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
PrefixE8:18:63:40:00:00 /28
Vendor addressA3, Hongtu Industrial Plot, Dashi town, Guangzhou Guangdong, CN 511430,
Country🇨🇳 China
RegisteredOct 16, 2015
Block rangeE8:18:63:40:00:00– E8:18:63:4F: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
E8:18:63:30:00:00 /28
DongGuan Pengxun Electronics Technology Co., Ltd.
Next
E8:18:63:50:00:00 /28
WETEK ELECTRONICS LIMITED
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Guangzhou Tianyi Electronics Co., Ltd holds 1 registered blocks in the IEEE registry, ranking #14,203 of 33,427 organizations by block count.