MA-S: a /36 block (also called an OUI-36 assignment), IEEE's smallest, covering 4,096 addresses.
Prefix70:B3:D5:11:20:00 /36
Vendor addressAlte Poststraße 152 Graz Steiermark AT 8020
Country🇦🇹 Austria
RegisteredJun 22, 2014
Block range70:B3:D5:11:20:00– 70:B3:D5:11:2F: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 →
Example addresses in this block
Where this block sits
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70:B3:D5:11:10:00 /36
Leonardo Sistemi Integrati S.r.l.
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70:B3:D5:11:30:00 /36
iREA System Industry
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
DiTEST Fahrzeugdiagnose GmbH holds 6 registered blocks in the IEEE registry, ranking #486 of 33,421 organizations by block count.
Other blocks registered to DiTEST Fahrzeugdiagnose GmbH