MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
Prefix1C:82:59:20:00:00 /28
Vendor addressGrand Front Osaka Tower-B 28F, 3-1 ofuka-cho, kita-ku Osaka Osaka JP 530-0011
RegisteredMar 9, 2019
Block range1C:82:59:20:00:00– 1C:82:59:2F: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

The nearest registered blocks of the same size on either side of this one in IEEE's address space.

Diatrend Corporation holds 1 registered blocks in the IEEE registry, ranking #10,277 of 33,421 organizations by block count.