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:D0:00:00 /28
Vendor address255 Fourier Avenue Fremont US 94539
Country🇺🇸 United States
RegisteredJun 19, 2016
Block rangeF8:1D:78:D0:00:00– F8:1D:78: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
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F8:1D:78:C0:00:00 /28
SHENZHUOYUE TECHNOLOGY.,LTD
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F8:1D:78:E0:00:00 /28
GUANGDONG ENOK COMMUNICATION CO., LTD.
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Tofino holds 2 registered blocks in the IEEE registry, ranking #3,270 of 33,427 organizations by block count.
Other blocks registered to Tofino