Which company owns MAC address prefix B4:FE:8C?

MAC address prefix B4:FE:8C is registered to Centro Sicurezza Italia SpA in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with B4:FE:8C has a network interface built by Centro Sicurezza Italia SpA.

What is the OUI B4:FE:8C?

B4:FE:8C is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Centro Sicurezza Italia SpA. It covers every address from B4:FE:8C:00:00:00 to B4:FE:8C:FF:FF:FF, or 16,777,216 addresses in total. It is also written B4-FE-8C.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in B4:FE:8C:00:00:00 that is B4:FE:8C — 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 Centro Sicurezza Italia SpA located?

Centro Sicurezza Italia SpA is listed at Via Venaria 28-30 Alpignano Torino IT 10091 in the IEEE OUI registry entry for B4:FE:8C. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Centro Sicurezza Italia SpA

MAC address prefix B4:FE:8C is registered to Centro Sicurezza Italia SpA in the IEEE OUI registry. Any device whose MAC address begins with B4:FE:8C has a network interface built by Centro Sicurezza Italia SpA. 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 B4:FE:8C:00:00:00 to B4:FE:8C:FF:FF:FF.

OUI prefix: B4:FE:8C
Hyphen form: B4-FE-8C
MAC range: B4:FE:8C:00:00:00 – B4:FE:8C:FF:FF:FF
Addresses in block: 16,777,216
Organization: Centro Sicurezza Italia SpA
Address: Via Venaria 28-30 Alpignano Torino IT 10091
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 "Centro Sicurezza Italia SpA"
archived source →
2026-07-17Assigned to "Centro Sicurezza Italia SpA"

Nearby in the registry

The prefixes assigned immediately before and after B4:FE:8C:

FAQ

Which company owns MAC address prefix B4:FE:8C?: MAC address prefix B4:FE:8C is registered to Centro Sicurezza Italia SpA in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with B4:FE:8C has a network interface built by Centro Sicurezza Italia SpA.
What is the OUI B4:FE:8C?: B4:FE:8C is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Centro Sicurezza Italia SpA. It covers every address from B4:FE:8C:00:00:00 to B4:FE:8C:FF:FF:FF, or 16,777,216 addresses in total. It is also written B4-FE-8C.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in B4:FE:8C:00:00:00 that is B4:FE:8C — 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 Centro Sicurezza Italia SpA located?: Centro Sicurezza Italia SpA is listed at Via Venaria 28-30 Alpignano Torino IT 10091 in the IEEE OUI registry entry for B4:FE:8C. This is the address the organization registered with the IEEE, which may differ from its current operating address.