Which company owns MAC address prefix CC:43:E3?

MAC address prefix CC:43:E3 is registered to Trump s.a. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with CC:43:E3 has a network interface built by Trump s.a..

What is the OUI CC:43:E3?

CC:43:E3 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Trump s.a.. It covers every address from CC:43:E3:00:00:00 to CC:43:E3:FF:FF:FF, or 16,777,216 addresses in total. It is also written CC-43-E3.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in CC:43:E3:00:00:00 that is CC:43:E3 — 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 Trump s.a. located?

Trump s.a. is listed at rue de la Maitrise 9 Nivelles BE 1400 in the IEEE OUI registry entry for CC:43:E3. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Trump s.a.

MAC address prefix CC:43:E3 is registered to Trump s.a. in the IEEE OUI registry. Any device whose MAC address begins with CC:43:E3 has a network interface built by Trump 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 CC:43:E3:00:00:00 to CC:43:E3:FF:FF:FF.

OUI prefix: CC:43:E3
Hyphen form: CC-43-E3
MAC range: CC:43:E3:00:00:00 – CC:43:E3:FF:FF:FF
Addresses in block: 16,777,216
Organization: Trump s.a.
Address: rue de la Maitrise 9 Nivelles BE 1400
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 "Trump s.a."
archived source →
2026-07-17Assigned to "Trump s.a."

Nearby in the registry

The prefixes assigned immediately before and after CC:43:E3:

FAQ

Which company owns MAC address prefix CC:43:E3?: MAC address prefix CC:43:E3 is registered to Trump s.a. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with CC:43:E3 has a network interface built by Trump s.a..
What is the OUI CC:43:E3?: CC:43:E3 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Trump s.a.. It covers every address from CC:43:E3:00:00:00 to CC:43:E3:FF:FF:FF, or 16,777,216 addresses in total. It is also written CC-43-E3.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in CC:43:E3:00:00:00 that is CC:43:E3 — 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 Trump s.a. located?: Trump s.a. is listed at rue de la Maitrise 9 Nivelles BE 1400 in the IEEE OUI registry entry for CC:43:E3. This is the address the organization registered with the IEEE, which may differ from its current operating address.