MA-M: a /28 block, one IEEE assigns within a larger OUI when a full /24 isn't needed, covering 1,048,576 addresses.
Prefix4C:81:BE:00:00:00 /28
Vendor addressMahmutbey Mh. 2581 Sk No:6 İstanbul Bağcılar TR 34218
Country🇹🇷 Turkey
Block range4C:81:BE:00:00:00– 4C:81:BE:0F: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.
Polaris Elektronik holds 1 registered blocks in the IEEE registry, ranking #23,260 of 33,498 organizations by block count.