MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
Prefix90:4E:91:C0:00:00 /28
Vendor addressPecnianska 21 Bratislava Choose State / Province SK 85101
Country🇸🇰 Slovakia
RegisteredMay 28, 2017
Block range90:4E:91:C0:00:00– 90:4E:91:CF: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
90:4E:91:B0:00:00 /28
Shanghai JaWay Information Technology Co., Ltd.
Next
90:4E:91:D0:00:00 /28
SKODA ELECTRIC a.s.
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
Showtacle s.r.o. holds 1 registered blocks in the IEEE registry, ranking #27,224 of 33,427 organizations by block count.