MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
Prefix00:02:A3:00:00:00 /24
Vendor addressBruggerstrasse 72 Baden CH 5400
Country🇨🇠Switzerland
RegisteredSep 8, 2000
Block range00:02:A3:00:00:00– 00:02:A3: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
- Sep 8, 2000 – Jul 4, 2009 ABB Power Automation name changedaddress changed
- Jul 4, 2009 – Oct 28, 2021 ABB Switzerland Ltd, Power Systems name changedaddress changed
- Oct 28, 2021 – present Hitachi Energy Switzerland Ltd
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.
Hitachi Energy Switzerland Ltd holds 2 registered blocks in the IEEE registry, ranking #2,200 of 33,421 organizations by block count.
Other blocks registered to Hitachi Energy Switzerland Ltd