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:B5:20:00:00 /28
Vendor address20659 Valley Boulevard Walnut CA US 91789
Country🇺🇸 United States
RegisteredJun 4, 2021
Block range64:33:B5:20:00:00– 64:33:B5:2F: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:B5:10:00:00 /28
Huaqin Telecom Technology Co.,Ltd.
Next
64:33:B5:30:00:00 /28
Wingtech Mobile Communications Co.,Ltd
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Adesso, Inc holds 1 registered blocks in the IEEE registry, ranking #4,100 of 33,421 organizations by block count.