macadress

S I Sistemas Inteligentes Eletrônicos Ltda

MA-L
MA-L: a full /24 OUI block, IEEE's largest, covering 16,777,216 addresses.
PrefixC0:8B:6F:00:00:00 /24
Vendor addressRua Amadeu Piotto 161 Curitiba Paraná BR 81280020
Country🇧🇷  Brazil
RegisteredMar 12, 2010
Block rangeC0:8B:6F:00:00:00– C0:8B:6F:FF:FF:FF
Address capacity16,777,216
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. Mar 12, 2010 – Nov 29, 2012 S I Sistemas Inteligentes Eletronicos Ltda name changedaddress changed
  2. Nov 29, 2012 РAug 27, 2015 S I Sistemas Inteligentes Eletr̫nicos Ltda name changedaddress changed
  3. Aug 27, 2015 – present S I Sistemas Inteligentes Eletrônicos Ltda

Example addresses in this block

C0:8B:6F:00:00:00 C0:8B:6F:7F:FF:FF C0:8B:6F:FF:FF:FF

Where this block sits

S I Sistemas Inteligentes Eletrônicos Ltda holds 1 registered blocks in the IEEE registry, ranking #24,942 of 33,427 organizations by block count.