MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
Prefix74:E1:4A:B0:00:00 /28
Vendor addressFloor 20 Aux Building No.757 Rili Middle Road Yinzhou District Ningbo China Ningbo zhejiang CN 315199
Country🇨🇳 China
RegisteredOct 16, 2015
Block range74:E1:4A:B0:00:00– 74:E1:4A:BF: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
74:E1:4A:A0:00:00 /28
AStar Design Service Technologies Co., Ltd.
Next
74:E1:4A:C0:00:00 /28
Wuhan Shenghong Laser Projection Technology Co.,LTD
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Loctek Visual Technology Corp. holds 1 registered blocks in the IEEE registry, ranking #18,706 of 33,421 organizations by block count.