Which company owns MAC address prefix C0:E5:4E?

MAC address prefix C0:E5:4E is registered to ARIES Embedded GmbH in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with C0:E5:4E has a network interface built by ARIES Embedded GmbH.

What is the OUI C0:E5:4E?

C0:E5:4E is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to ARIES Embedded GmbH. It covers every address from C0:E5:4E:00:00:00 to C0:E5:4E:FF:FF:FF, or 16,777,216 addresses in total. It is also written C0-E5-4E.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in C0:E5:4E:00:00:00 that is C0:E5:4E — 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 ARIES Embedded GmbH located?

ARIES Embedded GmbH is listed at Schöngeisinger Str. 84 Fürstenfeldbruck DE D-82256 in the IEEE OUI registry entry for C0:E5:4E. This is the address the organization registered with the IEEE, which may differ from its current operating address.

ARIES Embedded GmbH

MAC address prefix C0:E5:4E is registered to ARIES Embedded GmbH in the IEEE OUI registry. Any device whose MAC address begins with C0:E5:4E has a network interface built by ARIES Embedded GmbH. 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 C0:E5:4E:00:00:00 to C0:E5:4E:FF:FF:FF.

OUI prefix: C0:E5:4E
Hyphen form: C0-E5-4E
MAC range: C0:E5:4E:00:00:00 – C0:E5:4E:FF:FF:FF
Addresses in block: 16,777,216
Organization: ARIES Embedded GmbH
Address: Schöngeisinger Str. 84 Fürstenfeldbruck DE D-82256
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 (3)

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 "DENX Computer Systems GmbH"
archived source →
2017-09-08Renamed from "DENX Computer Systems GmbH" to "ARIES Embedded GmbH"
archived source →
2026-07-17Assigned to "ARIES Embedded GmbH"

Nearby in the registry

The prefixes assigned immediately before and after C0:E5:4E:

FAQ

Which company owns MAC address prefix C0:E5:4E?: MAC address prefix C0:E5:4E is registered to ARIES Embedded GmbH in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with C0:E5:4E has a network interface built by ARIES Embedded GmbH.
What is the OUI C0:E5:4E?: C0:E5:4E is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to ARIES Embedded GmbH. It covers every address from C0:E5:4E:00:00:00 to C0:E5:4E:FF:FF:FF, or 16,777,216 addresses in total. It is also written C0-E5-4E.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in C0:E5:4E:00:00:00 that is C0:E5:4E — 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 ARIES Embedded GmbH located?: ARIES Embedded GmbH is listed at Schöngeisinger Str. 84 Fürstenfeldbruck DE D-82256 in the IEEE OUI registry entry for C0:E5:4E. This is the address the organization registered with the IEEE, which may differ from its current operating address.