MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
PrefixF8:1D:78:10:00:00 /28
Vendor address2-3-10 Kudanminami, Chiyoda-Ku Tokyo JP 102-0074
Country🇯🇵 Japan
RegisteredJun 26, 2016
Block rangeF8:1D:78:10:00:00– F8:1D:78:1F: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
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F8:1D:78:00:00:00 /28
Dongguan Shun Hing Plastics Limited
Next
F8:1D:78:20:00:00 /28
Xperio Labs Limited
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
ADTECHNO Inc. holds 1 registered blocks in the IEEE registry, ranking #4,154 of 33,421 organizations by block count.