Which company owns MAC address prefix D0:B2:70?

MAC address prefix D0:B2:70 is registered to Visteon Portuguesa, Ltd in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with D0:B2:70 has a network interface built by Visteon Portuguesa, Ltd.

What is the OUI D0:B2:70?

D0:B2:70 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Visteon Portuguesa, Ltd. It covers every address from D0:B2:70:00:00:00 to D0:B2:70:FF:FF:FF, or 16,777,216 addresses in total. It is also written D0-B2-70.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in D0:B2:70:00:00:00 that is D0:B2:70 — 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 Visteon Portuguesa, Ltd located?

Visteon Portuguesa, Ltd is listed at Estrada Nacional 252-km12 Palmela PT 2951-503 in the IEEE OUI registry entry for D0:B2:70. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Visteon Portuguesa, Ltd

MAC address prefix D0:B2:70 is registered to Visteon Portuguesa, Ltd in the IEEE OUI registry. Any device whose MAC address begins with D0:B2:70 has a network interface built by Visteon Portuguesa, Ltd. 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 D0:B2:70:00:00:00 to D0:B2:70:FF:FF:FF.

OUI prefix: D0:B2:70
Hyphen form: D0-B2-70
MAC range: D0:B2:70:00:00:00 – D0:B2:70:FF:FF:FF
Addresses in block: 16,777,216
Organization: Visteon Portuguesa, Ltd
Address: Estrada Nacional 252-km12 Palmela PT 2951-503
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.

2025-05-13Assigned to "Visteon Portuguesa, Ltd"
archived source →
2026-07-17Assigned to "Visteon Portuguesa, Ltd"

Nearby in the registry

The prefixes assigned immediately before and after D0:B2:70:

FAQ

Which company owns MAC address prefix D0:B2:70?: MAC address prefix D0:B2:70 is registered to Visteon Portuguesa, Ltd in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with D0:B2:70 has a network interface built by Visteon Portuguesa, Ltd.
What is the OUI D0:B2:70?: D0:B2:70 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Visteon Portuguesa, Ltd. It covers every address from D0:B2:70:00:00:00 to D0:B2:70:FF:FF:FF, or 16,777,216 addresses in total. It is also written D0-B2-70.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in D0:B2:70:00:00:00 that is D0:B2:70 — 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 Visteon Portuguesa, Ltd located?: Visteon Portuguesa, Ltd is listed at Estrada Nacional 252-km12 Palmela PT 2951-503 in the IEEE OUI registry entry for D0:B2:70. This is the address the organization registered with the IEEE, which may differ from its current operating address.