MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
Prefix64:33:B5:10:00:00 /28
Vendor addressBuilding 1,No.399, Keyuan Road, Pudong, Shanghai China Shanghai CN 200120
Country🇨🇳 China
RegisteredJun 5, 2021
Block range64:33:B5:10:00:00– 64:33:B5:1F: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
64:33:B5:00:00:00 /28
Duomondi International Development Co., Ltd.
Next
64:33:B5:20:00:00 /28
Adesso, Inc
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Huaqin Telecom Technology Co.,Ltd. holds 5 registered blocks in the IEEE registry, ranking #587 of 33,421 organizations by block count.
Other blocks registered to Huaqin Telecom Technology Co.,Ltd.