macadress

BRS Sistemas Eletrônicos

MA-S
MA-S: a /36 block (also called an OUI-36 assignment), IEEE's smallest, covering 4,096 addresses.
Prefix70:B3:D5:D9:70:00 /36
Vendor addressRua Gomes de Freitas, 491/204 Porto Alegre - RS (Non U.S.) BR 91380-000
Country🇧🇷  Brazil
RegisteredSep 28, 2014
Block range70:B3:D5:D9:70:00– 70:B3:D5:D9:7F: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

  1. Sep 28, 2014 – Jun 6, 2020 BRS Sistemas Eletronicos name changed
  2. Jun 6, 2020 – present BRS Sistemas Eletrônicos

Example addresses in this block

70:B3:D5:D9:70:00 70:B3:D5:D9:77:FF 70:B3:D5:D9:7F:FF

Where this block sits

Previous 70:B3:D5:D9:60:00 /36 Thermo Fisher Scientific Inc. Next 70:B3:D5:D9:80:00 /36 ACD Elekronik GmbH

The nearest registered blocks of the same size on either side of this one in IEEE's address space.

BRS Sistemas Eletrônicos holds 17 registered blocks in the IEEE registry, ranking #191 of 33,421 organizations by block count.

Other blocks registered to BRS Sistemas Eletrônicos

18:C3:E4:70:00:00 /28 MA-M 00:50:C2:AA:B0:00 /36 IAB 40:D8:55:06:B0:00 /36 IAB 70:B3:D5:1F:D0:00 /36 MA-S 70:B3:D5:35:60:00 /36 MA-S 70:B3:D5:3C:D0:00 /36 MA-S 70:B3:D5:55:E0:00 /36 MA-S 70:B3:D5:F1:60:00 /36 MA-S 8C:1F:64:2C:80:00 /36 MA-S 8C:1F:64:34:00:00 /36 MA-S 8C:1F:64:3D:B0:00 /36 MA-S 8C:1F:64:94:40:00 /36 MA-S