MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:15:C3:00:00:00 /24
Vendor addressRuetistrasse 13 Schlieren ZH CH 8952
Country🇨🇠Switzerland
RegisteredSep 9, 2005
Block range00:15:C3:00:00:00– 00:15:C3: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.
Ruf Telematik AG holds 1 registered blocks in the IEEE registry, ranking #24,870 of 33,421 organizations by block count.