Which company owns MAC address prefix 68:B9:83?

MAC address prefix 68:B9:83 is registered to b-plus GmbH in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 68:B9:83 has a network interface built by b-plus GmbH.

What is the OUI 68:B9:83?

68:B9:83 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to b-plus GmbH. It covers every address from 68:B9:83:00:00:00 to 68:B9:83:FF:FF:FF, or 16,777,216 addresses in total. It is also written 68-B9-83.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 68:B9:83:00:00:00 that is 68:B9:83 — 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 b-plus GmbH located?

b-plus GmbH is listed at Ulrichsberger Str. 17 Deggendorf Bavaria DE 94469 in the IEEE OUI registry entry for 68:B9:83. This is the address the organization registered with the IEEE, which may differ from its current operating address.

b-plus GmbH

MAC address prefix 68:B9:83 is registered to b-plus GmbH in the IEEE OUI registry. Any device whose MAC address begins with 68:B9:83 has a network interface built by b-plus 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 68:B9:83:00:00:00 to 68:B9:83:FF:FF:FF.

OUI prefix: 68:B9:83
Hyphen form: 68-B9-83
MAC range: 68:B9:83:00:00:00 – 68:B9:83:FF:FF:FF
Addresses in block: 16,777,216
Organization: b-plus GmbH
Address: Ulrichsberger Str. 17 Deggendorf Bavaria DE 94469
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 "b-plus GmbH"
archived source →
2026-07-17Assigned to "b-plus GmbH"

Nearby in the registry

The prefixes assigned immediately before and after 68:B9:83:

FAQ

Which company owns MAC address prefix 68:B9:83?: MAC address prefix 68:B9:83 is registered to b-plus GmbH in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 68:B9:83 has a network interface built by b-plus GmbH.
What is the OUI 68:B9:83?: 68:B9:83 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to b-plus GmbH. It covers every address from 68:B9:83:00:00:00 to 68:B9:83:FF:FF:FF, or 16,777,216 addresses in total. It is also written 68-B9-83.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 68:B9:83:00:00:00 that is 68:B9:83 — 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 b-plus GmbH located?: b-plus GmbH is listed at Ulrichsberger Str. 17 Deggendorf Bavaria DE 94469 in the IEEE OUI registry entry for 68:B9:83. This is the address the organization registered with the IEEE, which may differ from its current operating address.