HMicro Inc (AC:64:DD:D0:00:00 /28)

HMicro Inc MA-M

MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.

PrefixAC:64:DD:D0:00:00 /28

Vendor address39355 California St., Suite 303 Fremont null US 94538

Block rangeAC:64:DD:D0:00:00– AC:64:DD:DF: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

AC:64:DD:D0:00:00 AC:64:DD:D7:FF:FF AC:64:DD:DF:FF:FF

Other blocks registered to HMicro Inc

70:B3:D5:1A:10:00 /36 MA-S 70:B3:D5:8C:50:00 /36 MA-S