Which company owns MAC address prefix 50:72:4D?

MAC address prefix 50:72:4D is registered to BEG Brueck Electronic GmbH in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 50:72:4D has a network interface built by BEG Brueck Electronic GmbH.

What is the OUI 50:72:4D?

50:72:4D is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to BEG Brueck Electronic GmbH. It covers every address from 50:72:4D:00:00:00 to 50:72:4D:FF:FF:FF, or 16,777,216 addresses in total. It is also written 50-72-4D.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 50:72:4D:00:00:00 that is 50:72:4D — 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 BEG Brueck Electronic GmbH located?

BEG Brueck Electronic GmbH is listed at Schlosserstraße 30 Lindlar Nordrhein-Westfalen DE 51789 in the IEEE OUI registry entry for 50:72:4D. This is the address the organization registered with the IEEE, which may differ from its current operating address.

BEG Brueck Electronic GmbH

MAC address prefix 50:72:4D is registered to BEG Brueck Electronic GmbH in the IEEE OUI registry. Any device whose MAC address begins with 50:72:4D has a network interface built by BEG Brueck Electronic 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 50:72:4D:00:00:00 to 50:72:4D:FF:FF:FF.

OUI prefix: 50:72:4D
Hyphen form: 50-72-4D
MAC range: 50:72:4D:00:00:00 – 50:72:4D:FF:FF:FF
Addresses in block: 16,777,216
Organization: BEG Brueck Electronic GmbH
Address: Schlosserstraße 30 Lindlar Nordrhein-Westfalen DE 51789
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 "BEG Brueck Electronic GmbH"
archived source →
2026-07-17Assigned to "BEG Brueck Electronic GmbH"

Nearby in the registry

The prefixes assigned immediately before and after 50:72:4D:

FAQ

Which company owns MAC address prefix 50:72:4D?: MAC address prefix 50:72:4D is registered to BEG Brueck Electronic GmbH in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 50:72:4D has a network interface built by BEG Brueck Electronic GmbH.
What is the OUI 50:72:4D?: 50:72:4D is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to BEG Brueck Electronic GmbH. It covers every address from 50:72:4D:00:00:00 to 50:72:4D:FF:FF:FF, or 16,777,216 addresses in total. It is also written 50-72-4D.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 50:72:4D:00:00:00 that is 50:72:4D — 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 BEG Brueck Electronic GmbH located?: BEG Brueck Electronic GmbH is listed at Schlosserstraße 30 Lindlar Nordrhein-Westfalen DE 51789 in the IEEE OUI registry entry for 50:72:4D. This is the address the organization registered with the IEEE, which may differ from its current operating address.