MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
PrefixB4:4D:43:A0:00:00 /28
Vendor addressAvenida Pirineos 7, BAJO11 San Sebastian de los Reyes Madrid ES 28703
Country🇪🇸 Spain
RegisteredMar 1, 2023
Block rangeB4:4D:43:A0:00:00– B4:4D:43:AF: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
B4:4D:43:90:00:00 /28
AD HOC DEVELOPMENTS S.L
Next
B4:4D:43:B0:00:00 /28
Paulmann Licht GmbH
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
UAV Navigation holds 1 registered blocks in the IEEE registry, ranking #30,767 of 33,421 organizations by block count.