MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
Prefix50:FF:99:A0:00:00 /28
Vendor addressNiels-Bohr-Str. 5 Magdeburg Sachsen-Anh. DE 39106
Country🇩🇪 Germany
RegisteredFeb 21, 2016
Block range50:FF:99:A0:00:00– 50:FF:99: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
50:FF:99:90:00:00 /28
Sea Eagle Optoelectronic Information Technology(Tianjin)co,Ltd
Next
50:FF:99:B0:00:00 /28
Sichuan Dowlab Electronics Technology Co. Ltd
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
metraTec GmbH holds 2 registered blocks in the IEEE registry, ranking #2,517 of 33,427 organizations by block count.
Other blocks registered to metraTec GmbH