Which company owns MAC address prefix 44:0B:AB?

MAC address prefix 44:0B:AB is registered to Positivo Tecnologia S.A. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 44:0B:AB has a network interface built by Positivo Tecnologia S.A..

What is the OUI 44:0B:AB?

44:0B:AB is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Positivo Tecnologia S.A.. It covers every address from 44:0B:AB:00:00:00 to 44:0B:AB:FF:FF:FF, or 16,777,216 addresses in total. It is also written 44-0B-AB.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 44:0B:AB:00:00:00 that is 44:0B:AB — 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 Positivo Tecnologia S.A. located?

Positivo Tecnologia S.A. is listed at João Bettega, 5200 Curitiba Paraná BR 81350-000 in the IEEE OUI registry entry for 44:0B:AB. This is the address the organization registered with the IEEE, which may differ from its current operating address.

How many MAC prefixes does Positivo Tecnologia S.A. own?

Positivo Tecnologia S.A. holds 3 OUI prefixes in the IEEE registry, of which 44:0B:AB is one. A device made by Positivo Tecnologia S.A. could carry a MAC address from any of them.

Positivo Tecnologia S.A.

MAC address prefix 44:0B:AB is registered to Positivo Tecnologia S.A. in the IEEE OUI registry. Any device whose MAC address begins with 44:0B:AB has a network interface built by Positivo Tecnologia S.A.. 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 44:0B:AB:00:00:00 to 44:0B:AB:FF:FF:FF.

OUI prefix: 44:0B:AB
Hyphen form: 44-0B-AB
MAC range: 44:0B:AB:00:00:00 – 44:0B:AB:FF:FF:FF
Addresses in block: 16,777,216
Organization: Positivo Tecnologia S.A.
Address: João Bettega, 5200 Curitiba Paraná BR 81350-000
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.

Other prefixes from Positivo Tecnologia S.A.

Positivo Tecnologia S.A. holds 3 OUI prefixes in total. A device with this exact prefix could just as well carry any of these:

Assignment history (2)

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

2024-08-27Assigned to "Positivo Tecnologia S.A."
archived source →
2026-07-17Assigned to "Positivo Tecnologia S.A."

Nearby in the registry

The prefixes assigned immediately before and after 44:0B:AB:

FAQ

Which company owns MAC address prefix 44:0B:AB?: MAC address prefix 44:0B:AB is registered to Positivo Tecnologia S.A. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 44:0B:AB has a network interface built by Positivo Tecnologia S.A..
What is the OUI 44:0B:AB?: 44:0B:AB is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Positivo Tecnologia S.A.. It covers every address from 44:0B:AB:00:00:00 to 44:0B:AB:FF:FF:FF, or 16,777,216 addresses in total. It is also written 44-0B-AB.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 44:0B:AB:00:00:00 that is 44:0B:AB — 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 Positivo Tecnologia S.A. located?: Positivo Tecnologia S.A. is listed at João Bettega, 5200 Curitiba Paraná BR 81350-000 in the IEEE OUI registry entry for 44:0B:AB. This is the address the organization registered with the IEEE, which may differ from its current operating address.
How many MAC prefixes does Positivo Tecnologia S.A. own?: Positivo Tecnologia S.A. holds 3 OUI prefixes in the IEEE registry, of which 44:0B:AB is one. A device made by Positivo Tecnologia S.A. could carry a MAC address from any of them.