MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:25:78:00:00:00 /24
Vendor addressPlekhanovskaya st., 14 Voronezh RU 394018
Country🇷🇺 Russia
RegisteredMar 15, 2009
Block range00:25:78:00:00:00– 00:25:78:FF:FF:FF
Address capacity16,777,216
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.
JSC "Concern "Sozvezdie" holds 1 registered blocks in the IEEE registry, ranking #17,301 of 33,421 organizations by block count.