Which company owns MAC address prefix C4:56:00?

MAC address prefix C4:56:00 is registered to Galleon Embedded Computing in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with C4:56:00 has a network interface built by Galleon Embedded Computing.

What is the OUI C4:56:00?

C4:56:00 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Galleon Embedded Computing. It covers every address from C4:56:00:00:00:00 to C4:56:00:FF:FF:FF, or 16,777,216 addresses in total. It is also written C4-56-00.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in C4:56:00:00:00:00 that is C4:56:00 — 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 Galleon Embedded Computing located?

Galleon Embedded Computing is listed at Grenseveien 97c Oslo Oslo NO N-0602 in the IEEE OUI registry entry for C4:56:00. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Galleon Embedded Computing

MAC address prefix C4:56:00 is registered to Galleon Embedded Computing in the IEEE OUI registry. Any device whose MAC address begins with C4:56:00 has a network interface built by Galleon Embedded Computing. 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 C4:56:00:00:00:00 to C4:56:00:FF:FF:FF.

OUI prefix: C4:56:00
Hyphen form: C4-56-00
MAC range: C4:56:00:00:00:00 – C4:56:00:FF:FF:FF
Addresses in block: 16,777,216
Organization: Galleon Embedded Computing
Address: Grenseveien 97c Oslo Oslo NO N-0602
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 "Galleon Embedded Computing"
archived source →
2026-07-17Assigned to "Galleon Embedded Computing"

Nearby in the registry

The prefixes assigned immediately before and after C4:56:00:

FAQ

Which company owns MAC address prefix C4:56:00?: MAC address prefix C4:56:00 is registered to Galleon Embedded Computing in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with C4:56:00 has a network interface built by Galleon Embedded Computing.
What is the OUI C4:56:00?: C4:56:00 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Galleon Embedded Computing. It covers every address from C4:56:00:00:00:00 to C4:56:00:FF:FF:FF, or 16,777,216 addresses in total. It is also written C4-56-00.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in C4:56:00:00:00:00 that is C4:56:00 — 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 Galleon Embedded Computing located?: Galleon Embedded Computing is listed at Grenseveien 97c Oslo Oslo NO N-0602 in the IEEE OUI registry entry for C4:56:00. This is the address the organization registered with the IEEE, which may differ from its current operating address.