MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
PrefixD4:7C:44:40:00:00 /28
Vendor addressGasan Digital 1-ro 212 Geumcheon-gu Seoul KR 08502
Country🇰🇷 South Korea
RegisteredMar 25, 2018
Block rangeD4:7C:44:40:00:00– D4:7C:44:4F: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
D4:7C:44:30:00:00 /28
OMRON SENTECH CO., LTD.
Next
D4:7C:44:50:00:00 /28
LS Communication Co.,Ltd.
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Sammi Onformation Systems holds 1 registered blocks in the IEEE registry, ranking #25,089 of 33,427 organizations by block count.