MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
PrefixA4:B1:EE:00:00:00 /24
Vendor addressAm Gut Wolf 15 Aachen DE 52070
Country🇩🇪 Germany
RegisteredDec 1, 2009
Block rangeA4:B1:EE:00:00:00– A4:B1:EE: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 →
Ownership timeline
- Dec 1, 2009 – Dec 3, 2009 H. ZANDER GmbH & Co. KG name changedaddress changed
- Dec 3, 2009 – present H. ZANDER GmbH & Co. KG
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.
H. ZANDER GmbH & Co. KG holds 1 registered blocks in the IEEE registry, ranking #14,276 of 33,427 organizations by block count.