MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:1D:C4:00:00:00 /24
Vendor addressKDX Omori, Bldg 8F Tokyo JP 140-0016
Country🇯🇵 Japan
RegisteredAug 18, 2007
Block range00:1D:C4:00:00:00– 00:1D:C4:FF:FF:FF
Address capacity16,777,216
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
00:1D:C3:00:00:00 /24
RIKOR TV, Ltd
Next
00:1D:C5:00:00:00 /24
Beijing Jiaxun Feihong Electricial Co., Ltd.
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
AIOI Systems Co., Ltd. holds 2 registered blocks in the IEEE registry, ranking #1,468 of 33,421 organizations by block count.
Other blocks registered to AIOI Systems Co., Ltd.