Which company owns MAC address prefix 00:0C:EA?

MAC address prefix 00:0C:EA is registered to aphona Kommunikationssysteme in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 00:0C:EA has a network interface built by aphona Kommunikationssysteme.

What is the OUI 00:0C:EA?

00:0C:EA is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to aphona Kommunikationssysteme. It covers every address from 00:0C:EA:00:00:00 to 00:0C:EA:FF:FF:FF, or 16,777,216 addresses in total. It is also written 00-0C-EA.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 00:0C:EA:00:00:00 that is 00:0C:EA — 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 aphona Kommunikationssysteme located?

aphona Kommunikationssysteme is listed at Entwicklungs- und VertriebsgmbH Wien AT 1230 in the IEEE OUI registry entry for 00:0C:EA. This is the address the organization registered with the IEEE, which may differ from its current operating address.

aphona Kommunikationssysteme

MAC address prefix 00:0C:EA is registered to aphona Kommunikationssysteme in the IEEE OUI registry. Any device whose MAC address begins with 00:0C:EA has a network interface built by aphona Kommunikationssysteme. 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 00:0C:EA:00:00:00 to 00:0C:EA:FF:FF:FF.

OUI prefix: 00:0C:EA
Hyphen form: 00-0C-EA
MAC range: 00:0C:EA:00:00:00 – 00:0C:EA:FF:FF:FF
Addresses in block: 16,777,216
Organization: aphona Kommunikationssysteme
Address: Entwicklungs- und VertriebsgmbH Wien AT 1230
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 "aphona Kommunikationssysteme"
archived source →
2026-07-17Assigned to "aphona Kommunikationssysteme"

Nearby in the registry

The prefixes assigned immediately before and after 00:0C:EA:

FAQ

Which company owns MAC address prefix 00:0C:EA?: MAC address prefix 00:0C:EA is registered to aphona Kommunikationssysteme in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 00:0C:EA has a network interface built by aphona Kommunikationssysteme.
What is the OUI 00:0C:EA?: 00:0C:EA is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to aphona Kommunikationssysteme. It covers every address from 00:0C:EA:00:00:00 to 00:0C:EA:FF:FF:FF, or 16,777,216 addresses in total. It is also written 00-0C-EA.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 00:0C:EA:00:00:00 that is 00:0C:EA — 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 aphona Kommunikationssysteme located?: aphona Kommunikationssysteme is listed at Entwicklungs- und VertriebsgmbH Wien AT 1230 in the IEEE OUI registry entry for 00:0C:EA. This is the address the organization registered with the IEEE, which may differ from its current operating address.