MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
Prefix7C:47:7C:D0:00:00 /28
Vendor address1163 Kassel Terrace Sunnyvale CA 94089
Country🇨🇦 Canada
RegisteredJan 10, 2016
Block range7C:47:7C:D0:00:00– 7C:47:7C: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
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Speedifi Inc holds 2 registered blocks in the IEEE registry, ranking #3,131 of 33,421 organizations by block count.
Other blocks registered to Speedifi Inc