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

MAC address prefix A0:C3:DE is registered to Triton Electronic Systems Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with A0:C3:DE has a network interface built by Triton Electronic Systems Ltd..

What is the OUI A0:C3:DE?

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

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in A0:C3:DE:00:00:00 that is A0:C3:DE — 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 Triton Electronic Systems Ltd. located?

Triton Electronic Systems Ltd. is listed at 620063, Ekaterinburg, P/O box 522 Ekaterinburg Sverdlovskaya obl. RU 620063 in the IEEE OUI registry entry for A0:C3:DE. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Triton Electronic Systems Ltd.

MAC address prefix A0:C3:DE is registered to Triton Electronic Systems Ltd. in the IEEE OUI registry. Any device whose MAC address begins with A0:C3:DE has a network interface built by Triton Electronic Systems 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 A0:C3:DE:00:00:00 to A0:C3:DE:FF:FF:FF.

OUI prefix: A0:C3:DE
Hyphen form: A0-C3-DE
MAC range: A0:C3:DE:00:00:00 – A0:C3:DE:FF:FF:FF
Addresses in block: 16,777,216
Organization: Triton Electronic Systems Ltd.
Address: 620063, Ekaterinburg, P/O box 522 Ekaterinburg Sverdlovskaya obl. RU 620063
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 "Triton Electronic Systems Ltd."
archived source →
2026-07-17Assigned to "Triton Electronic Systems Ltd."

Nearby in the registry

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

FAQ

Which company owns MAC address prefix A0:C3:DE?: MAC address prefix A0:C3:DE is registered to Triton Electronic Systems Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with A0:C3:DE has a network interface built by Triton Electronic Systems Ltd..
What is the OUI A0:C3:DE?: A0:C3:DE is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Triton Electronic Systems Ltd.. It covers every address from A0:C3:DE:00:00:00 to A0:C3:DE:FF:FF:FF, or 16,777,216 addresses in total. It is also written A0-C3-DE.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in A0:C3:DE:00:00:00 that is A0:C3:DE — 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 Triton Electronic Systems Ltd. located?: Triton Electronic Systems Ltd. is listed at 620063, Ekaterinburg, P/O box 522 Ekaterinburg Sverdlovskaya obl. RU 620063 in the IEEE OUI registry entry for A0:C3:DE. This is the address the organization registered with the IEEE, which may differ from its current operating address.