MA-S: a /36 block (also called an OUI-36 assignment), IEEE's smallest, covering 4,096 addresses.
Prefix8C:1F:64:9D:30:00 /36
Vendor addressHelmholtzstraße 31-37 Viersen Nordrhein-Westfalen DE 41747
Country🇩🇪 Germany
RegisteredMar 7, 2024
Block range8C:1F:64:9D:30:00– 8C:1F:64:9D:3F:FF
Address capacity4,096
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
- Mar 7, 2024 – Feb 12, 2025 EA Elektro-Automatik name changed
- Feb 12, 2025 – present EA Elektro-Automatik GmbH
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.
EA Elektro-Automatik GmbH holds 12 registered blocks in the IEEE registry, ranking #256 of 33,427 organizations by block count.
Other blocks registered to EA Elektro-Automatik GmbH