Which company owns MAC address prefix 38:85:BB?

MAC address prefix 38:85:BB is registered to Commodore International Corporation in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 38:85:BB has a network interface built by Commodore International Corporation.

What is the OUI 38:85:BB?

38:85:BB is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Commodore International Corporation. It covers every address from 38:85:BB:00:00:00 to 38:85:BB:FF:FF:FF, or 16,777,216 addresses in total. It is also written 38-85-BB.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 38:85:BB:00:00:00 that is 38:85:BB — 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 Commodore International Corporation located?

Commodore International Corporation is listed at 8 The Green, Ste A Dover DE US 19901 in the IEEE OUI registry entry for 38:85:BB. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Commodore International Corporation

MAC address prefix 38:85:BB is registered to Commodore International Corporation in the IEEE OUI registry. Any device whose MAC address begins with 38:85:BB has a network interface built by Commodore International Corporation. 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 38:85:BB:00:00:00 to 38:85:BB:FF:FF:FF.

OUI prefix: 38:85:BB
Hyphen form: 38-85-BB
MAC range: 38:85:BB:00:00:00 – 38:85:BB:FF:FF:FF
Addresses in block: 16,777,216
Organization: Commodore International Corporation
Address: 8 The Green, Ste A Dover DE US 19901
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 (1)

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

2026-08-18Assigned to "Commodore International Corporation"

Nearby in the registry

The prefixes assigned immediately before and after 38:85:BB:

FAQ

Which company owns MAC address prefix 38:85:BB?: MAC address prefix 38:85:BB is registered to Commodore International Corporation in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 38:85:BB has a network interface built by Commodore International Corporation.
What is the OUI 38:85:BB?: 38:85:BB is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Commodore International Corporation. It covers every address from 38:85:BB:00:00:00 to 38:85:BB:FF:FF:FF, or 16,777,216 addresses in total. It is also written 38-85-BB.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 38:85:BB:00:00:00 that is 38:85:BB — 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 Commodore International Corporation located?: Commodore International Corporation is listed at 8 The Green, Ste A Dover DE US 19901 in the IEEE OUI registry entry for 38:85:BB. This is the address the organization registered with the IEEE, which may differ from its current operating address.