Which company owns MAC address prefix EC:E9:0B?

MAC address prefix EC:E9:0B is registered to SISTEMA SOLUCOES ELETRONICAS LTDA - EASYTECH in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with EC:E9:0B has a network interface built by SISTEMA SOLUCOES ELETRONICAS LTDA - EASYTECH.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in EC:E9:0B:00:00:00 that is EC:E9:0B — and look that prefix up in the IEEE OUI registry. If the second-lowest bit of the first octet is set, the address is locally administered (a randomized or private MAC), which belongs to no manufacturer and will not resolve; modern phones and laptops use these by default on each network.

Where is SISTEMA SOLUCOES ELETRONICAS LTDA - EASYTECH located?

SISTEMA SOLUCOES ELETRONICAS LTDA - EASYTECH is listed at RUA GUERRA DE AGUIAR, 220 São Paulo SP BR 08275-260 in the IEEE OUI registry entry for EC:E9:0B. This is the address the organization registered with the IEEE, which may differ from its current operating address.

SISTEMA SOLUCOES ELETRONICAS LTDA - EASYTECH

MAC address prefix EC:E9:0B is registered to SISTEMA SOLUCOES ELETRONICAS LTDA - EASYTECH in the IEEE OUI registry. Any device whose MAC address begins with EC:E9:0B has a network interface built by SISTEMA SOLUCOES ELETRONICAS LTDA - EASYTECH. This prefix (the OUI, or Organizationally Unique Identifier) is assigned by the IEEE and is the first three octets of the address — it covers every MAC from EC:E9:0B:00:00:00 to EC:E9:0B:FF:FF:FF.

OUI prefix: EC:E9:0B
Hyphen form: EC-E9-0B
MAC range: EC:E9:0B:00:00:00 – EC:E9:0B:FF:FF:FF
Addresses in block: 16,777,216
Organization: SISTEMA SOLUCOES ELETRONICAS LTDA - EASYTECH
Address: RUA GUERRA DE AGUIAR, 220 São Paulo SP BR 08275-260
Source: IEEE OUI registry

Have a full MAC address? Look it up— we'll also tell you if it's a randomized (private) address rather than a real manufacturer prefix.

Assignment history (2)

The IEEE registry publishes current state only — this is the change record we've kept since we started tracking it daily.

2016-07-29Assigned to "SISTEMA SOLUCOES ELETRONICAS LTDA - EASYTECH"
archived source →
2026-07-17Assigned to "SISTEMA SOLUCOES ELETRONICAS LTDA - EASYTECH"

Nearby in the registry

The prefixes assigned immediately before and after EC:E9:0B:

FAQ

Which company owns MAC address prefix EC:E9:0B?: MAC address prefix EC:E9:0B is registered to SISTEMA SOLUCOES ELETRONICAS LTDA - EASYTECH in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with EC:E9:0B has a network interface built by SISTEMA SOLUCOES ELETRONICAS LTDA - EASYTECH.
What is the OUI EC:E9:0B?: EC:E9:0B is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to SISTEMA SOLUCOES ELETRONICAS LTDA - EASYTECH. It covers every address from EC:E9:0B:00:00:00 to EC:E9:0B:FF:FF:FF, or 16,777,216 addresses in total. It is also written EC-E9-0B.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in EC:E9:0B:00:00:00 that is EC:E9:0B — and look that prefix up in the IEEE OUI registry. If the second-lowest bit of the first octet is set, the address is locally administered (a randomized or private MAC), which belongs to no manufacturer and will not resolve; modern phones and laptops use these by default on each network.
Where is SISTEMA SOLUCOES ELETRONICAS LTDA - EASYTECH located?: SISTEMA SOLUCOES ELETRONICAS LTDA - EASYTECH is listed at RUA GUERRA DE AGUIAR, 220 São Paulo SP BR 08275-260 in the IEEE OUI registry entry for EC:E9:0B. This is the address the organization registered with the IEEE, which may differ from its current operating address.