MA-S: a /36 block (also called an OUI-36 assignment), IEEE's smallest, covering 4,096 addresses.
Prefix8C:1F:64:F5:70:00 /36
Vendor addressHelmholtzstraße 31-37 Viersen Nordrhein-Westfalen DE 41747
Country🇩🇪 Germany
RegisteredSep 17, 2022
Block range8C:1F:64:F5:70:00– 8C:1F:64:F5:7F: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
- Sep 17, 2022 – 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
Previous
8C:1F:64:F5:60:00 /36
KC5 International Sdn Bhd
Next
8C:1F:64:F5:80:00 /36
Mega Endustri Kontrol Sis.Tic.San.A.S
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 33,421 organizations by block count.
Other blocks registered to EA Elektro-Automatik GmbH