MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
PrefixA4:ED:43:90:00:00 /28
Vendor addressNo.1166 Xinluo Street Jinan City Shandong Province CN 250101
Country🇨🇳 China
RegisteredJun 10, 2018
Block rangeA4:ED:43:90:00:00– A4:ED:43:9F: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
A4:ED:43:80:00:00 /28
Linseis Messgeraete GmbH
Next
A4:ED:43:A0:00:00 /28
Guangzhou Maxfaith Communication Technology Co.,LTD.
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Heyuan intelligence technology CO.,Ltd holds 1 registered blocks in the IEEE registry, ranking #14,800 of 33,427 organizations by block count.