MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix38:4B:24:00:00:00 /24
Vendor addressOestliche Rheinbrückenstraße 50 Karlsruhe Baden-Württemberg DE 76181
Country🇩🇪 Germany
RegisteredSep 12, 2021
Block range38:4B:24:00:00:00– 38:4B:24: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
Siemens AG holds 23 registered blocks in the IEEE registry, ranking #153 of 33,421 organizations by block count.
Other blocks registered to SIEMENS AG