MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
PrefixD4:20:00:60:00:00 /28
Vendor addressRoom 501, no.570, Shengxia Road, Pudong New Area, Shanghai CN 200120
Country🇨🇳 China
RegisteredJul 2, 2022
Block rangeD4:20:00:60:00:00– D4:20:00:6F: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
D4:20:00:50:00:00 /28
Monolith Electric?Changzhou?Co.,Ltd.
Next
D4:20:00:70:00:00 /28
Annapurna labs
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
HiAR Information Technology Co.,Ltd holds 1 registered blocks in the IEEE registry, ranking #14,822 of 33,421 organizations by block count.