MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
Prefix7C:E4:A1:D0:00:00 /28
Vendor address10 Ubi Crescent, #02-29, Ubi Techpark Singapore Singapore SG 408564
Country🇸🇬 Singapore
RegisteredJul 22, 2026
Block range7C:E4:A1:D0:00:00– 7C:E4:A1: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
Where this block sits
Previous
7C:E4:A1:C0:00:00 /28
Annapurna labs
Next
7C:E4:A1:E0:00:00 /28
Dongguan City Boqun Electronic Technology Co., Ltd.
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
HAROGIC TECHNOLOGIES PTE. LTD. holds 1 registered blocks in the IEEE registry, ranking #14,577 of 33,421 organizations by block count.