MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
Prefix04:D1:6E:C0:00:00 /28
Vendor addressGinza 6-10-1, GINZA SIX 13F, Chuo-ku Tokyo Tokyo JP 1040061
Country🇯🇵 Japan
RegisteredAug 7, 2019
Block range04:D1:6E:C0:00:00– 04:D1:6E:CF: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
04:D1:6E:B0:00:00 /28
National Radio & Telecommunication Corporation - NRTC
Next
04:D1:6E:D0:00:00 /28
Elotec Fischer Elektronik GmbH
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
PacPort Corporation holds 1 registered blocks in the IEEE registry, ranking #22,518 of 33,427 organizations by block count.