MA-S: a /36 block (also called an OUI-36 assignment), IEEE's smallest, covering 4,096 addresses.
Prefix70:B3:D5:31:20:00 /36
Vendor addressVia Carlo Ceresa, 10 San Giovanni Bianco Bergamo IT 24015
Country🇮🇹 Italy
RegisteredNov 19, 2020
Block range70:B3:D5:31:20:00– 70:B3:D5:31:2F: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 →
Ownership timeline
- Nov 19, 2020 – Jan 29, 2021 Blue Sparq, Inc. name changedaddress changedcountry changed
- Jan 29, 2021 – present SMITEC S.p.A.
Example addresses in this block
Where this block sits
Previous
70:B3:D5:31:10:00 /36
Günther Spelsberg GmbH + Co. KG
Next
70:B3:D5:31:30:00 /36
DIEHL Controls
The nearest registered blocks of the same size on either side of this one in IEEE's address space.
SMITEC S.p.A. holds 5 registered blocks in the IEEE registry, ranking #646 of 33,427 organizations by block count.
Other blocks registered to SMITEC S.p.A.