Which company owns MAC address prefix A0:F7:C3?

MAC address prefix A0:F7:C3 is registered to Ficosa Automotive SLU in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with A0:F7:C3 has a network interface built by Ficosa Automotive SLU.

What is the OUI A0:F7:C3?

A0:F7:C3 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Ficosa Automotive SLU. It covers every address from A0:F7:C3:00:00:00 to A0:F7:C3:FF:FF:FF, or 16,777,216 addresses in total. It is also written A0-F7-C3.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in A0:F7:C3:00:00:00 that is A0:F7:C3 — 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 Ficosa Automotive SLU located?

Ficosa Automotive SLU is listed at Pol. Ind. Can Mitjans, Vial San Jordi s/n Viladecavalls Barcelona ES 08232 in the IEEE OUI registry entry for A0:F7:C3. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Ficosa Automotive SLU

MAC address prefix A0:F7:C3 is registered to Ficosa Automotive SLU in the IEEE OUI registry. Any device whose MAC address begins with A0:F7:C3 has a network interface built by Ficosa Automotive SLU. 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 A0:F7:C3:00:00:00 to A0:F7:C3:FF:FF:FF.

OUI prefix: A0:F7:C3
Hyphen form: A0-F7-C3
MAC range: A0:F7:C3:00:00:00 – A0:F7:C3:FF:FF:FF
Addresses in block: 16,777,216
Organization: Ficosa Automotive SLU
Address: Pol. Ind. Can Mitjans, Vial San Jordi s/n Viladecavalls Barcelona ES 08232
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.

2026-01-08Assigned to "Ficosa Automotive SLU"
archived source →
2026-07-17Assigned to "Ficosa Automotive SLU"

Nearby in the registry

The prefixes assigned immediately before and after A0:F7:C3:

FAQ

Which company owns MAC address prefix A0:F7:C3?: MAC address prefix A0:F7:C3 is registered to Ficosa Automotive SLU in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with A0:F7:C3 has a network interface built by Ficosa Automotive SLU.
What is the OUI A0:F7:C3?: A0:F7:C3 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Ficosa Automotive SLU. It covers every address from A0:F7:C3:00:00:00 to A0:F7:C3:FF:FF:FF, or 16,777,216 addresses in total. It is also written A0-F7-C3.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in A0:F7:C3:00:00:00 that is A0:F7:C3 — 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 Ficosa Automotive SLU located?: Ficosa Automotive SLU is listed at Pol. Ind. Can Mitjans, Vial San Jordi s/n Viladecavalls Barcelona ES 08232 in the IEEE OUI registry entry for A0:F7:C3. This is the address the organization registered with the IEEE, which may differ from its current operating address.