Which company owns MAC address prefix 84:2B:BC?

MAC address prefix 84:2B:BC is registered to Modelleisenbahn GmbH in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 84:2B:BC has a network interface built by Modelleisenbahn GmbH.

What is the OUI 84:2B:BC?

84:2B:BC is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Modelleisenbahn GmbH. It covers every address from 84:2B:BC:00:00:00 to 84:2B:BC:FF:FF:FF, or 16,777,216 addresses in total. It is also written 84-2B-BC.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 84:2B:BC:00:00:00 that is 84:2B:BC — 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 Modelleisenbahn GmbH located?

Modelleisenbahn GmbH is listed at Plainbachstrasse 4 Bergheim AT 5101 in the IEEE OUI registry entry for 84:2B:BC. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Modelleisenbahn GmbH

MAC address prefix 84:2B:BC is registered to Modelleisenbahn GmbH in the IEEE OUI registry. Any device whose MAC address begins with 84:2B:BC has a network interface built by Modelleisenbahn 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 84:2B:BC:00:00:00 to 84:2B:BC:FF:FF:FF.

OUI prefix: 84:2B:BC
Hyphen form: 84-2B-BC
MAC range: 84:2B:BC:00:00:00 – 84:2B:BC:FF:FF:FF
Addresses in block: 16,777,216
Organization: Modelleisenbahn GmbH
Address: Plainbachstrasse 4 Bergheim AT 5101
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 "Modelleisenbahn GmbH"
archived source →
2026-07-17Assigned to "Modelleisenbahn GmbH"

Nearby in the registry

The prefixes assigned immediately before and after 84:2B:BC:

FAQ

Which company owns MAC address prefix 84:2B:BC?: MAC address prefix 84:2B:BC is registered to Modelleisenbahn GmbH in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 84:2B:BC has a network interface built by Modelleisenbahn GmbH.
What is the OUI 84:2B:BC?: 84:2B:BC is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Modelleisenbahn GmbH. It covers every address from 84:2B:BC:00:00:00 to 84:2B:BC:FF:FF:FF, or 16,777,216 addresses in total. It is also written 84-2B-BC.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 84:2B:BC:00:00:00 that is 84:2B:BC — 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 Modelleisenbahn GmbH located?: Modelleisenbahn GmbH is listed at Plainbachstrasse 4 Bergheim AT 5101 in the IEEE OUI registry entry for 84:2B:BC. This is the address the organization registered with the IEEE, which may differ from its current operating address.