Which company owns MAC address prefix 78:52:49?

MAC address prefix 78:52:49 is registered to Loxone Electronics GmbH in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 78:52:49 has a network interface built by Loxone Electronics GmbH.

What is the OUI 78:52:49?

78:52:49 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Loxone Electronics GmbH. It covers every address from 78:52:49:00:00:00 to 78:52:49:FF:FF:FF, or 16,777,216 addresses in total. It is also written 78-52-49.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 78:52:49:00:00:00 that is 78:52:49 — 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 Loxone Electronics GmbH located?

Loxone Electronics GmbH is listed at Smart Home 1 Kollerschlag AT 4154 in the IEEE OUI registry entry for 78:52:49. This is the address the organization registered with the IEEE, which may differ from its current operating address.

How many MAC prefixes does Loxone Electronics GmbH own?

Loxone Electronics GmbH holds 2 OUI prefixes in the IEEE registry, of which 78:52:49 is one. A device made by Loxone Electronics GmbH could carry a MAC address from any of them.

Loxone Electronics GmbH

MAC address prefix 78:52:49 is registered to Loxone Electronics GmbH in the IEEE OUI registry. Any device whose MAC address begins with 78:52:49 has a network interface built by Loxone Electronics 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 78:52:49:00:00:00 to 78:52:49:FF:FF:FF.

OUI prefix: 78:52:49
Hyphen form: 78-52-49
MAC range: 78:52:49:00:00:00 – 78:52:49:FF:FF:FF
Addresses in block: 16,777,216
Organization: Loxone Electronics GmbH
Address: Smart Home 1 Kollerschlag AT 4154
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.

Other prefixes from Loxone Electronics GmbH

Loxone Electronics GmbH holds 2 OUI prefixes in total. A device with this exact prefix could just as well carry any of these:

50:4F:94

Assignment history (2)

The IEEE registry publishes current state only — this is the change record we've kept since we started tracking it daily.

2026-06-20Assigned to "Loxone Electronics GmbH"
archived source →
2026-07-17Assigned to "Loxone Electronics GmbH"

Nearby in the registry

The prefixes assigned immediately before and after 78:52:49:

FAQ

Which company owns MAC address prefix 78:52:49?: MAC address prefix 78:52:49 is registered to Loxone Electronics GmbH in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 78:52:49 has a network interface built by Loxone Electronics GmbH.
What is the OUI 78:52:49?: 78:52:49 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Loxone Electronics GmbH. It covers every address from 78:52:49:00:00:00 to 78:52:49:FF:FF:FF, or 16,777,216 addresses in total. It is also written 78-52-49.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 78:52:49:00:00:00 that is 78:52:49 — 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 Loxone Electronics GmbH located?: Loxone Electronics GmbH is listed at Smart Home 1 Kollerschlag AT 4154 in the IEEE OUI registry entry for 78:52:49. This is the address the organization registered with the IEEE, which may differ from its current operating address.
How many MAC prefixes does Loxone Electronics GmbH own?: Loxone Electronics GmbH holds 2 OUI prefixes in the IEEE registry, of which 78:52:49 is one. A device made by Loxone Electronics GmbH could carry a MAC address from any of them.