Which company owns MAC address prefix AC:04:25?

MAC address prefix AC:04:25 is registered to ball-b GmbH Co KG in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with AC:04:25 has a network interface built by ball-b GmbH Co KG.

What is the OUI AC:04:25?

AC:04:25 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to ball-b GmbH Co KG. It covers every address from AC:04:25:00:00:00 to AC:04:25:FF:FF:FF, or 16,777,216 addresses in total. It is also written AC-04-25.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in AC:04:25:00:00:00 that is AC:04:25 — 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 ball-b GmbH Co KG located?

ball-b GmbH Co KG is listed at Saganer Strasse 14 Nuremberg Bavaria DE 90475 in the IEEE OUI registry entry for AC:04:25. This is the address the organization registered with the IEEE, which may differ from its current operating address.

ball-b GmbH Co KG

MAC address prefix AC:04:25 is registered to ball-b GmbH Co KG in the IEEE OUI registry. Any device whose MAC address begins with AC:04:25 has a network interface built by ball-b GmbH Co KG. 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 AC:04:25:00:00:00 to AC:04:25:FF:FF:FF.

OUI prefix: AC:04:25
Hyphen form: AC-04-25
MAC range: AC:04:25:00:00:00 – AC:04:25:FF:FF:FF
Addresses in block: 16,777,216
Organization: ball-b GmbH Co KG
Address: Saganer Strasse 14 Nuremberg Bavaria DE 90475
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.

2022-07-11Assigned to "ball-b GmbH Co KG"
archived source →
2026-07-17Assigned to "ball-b GmbH Co KG"

Nearby in the registry

The prefixes assigned immediately before and after AC:04:25:

FAQ

Which company owns MAC address prefix AC:04:25?: MAC address prefix AC:04:25 is registered to ball-b GmbH Co KG in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with AC:04:25 has a network interface built by ball-b GmbH Co KG.
What is the OUI AC:04:25?: AC:04:25 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to ball-b GmbH Co KG. It covers every address from AC:04:25:00:00:00 to AC:04:25:FF:FF:FF, or 16,777,216 addresses in total. It is also written AC-04-25.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in AC:04:25:00:00:00 that is AC:04:25 — 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 ball-b GmbH Co KG located?: ball-b GmbH Co KG is listed at Saganer Strasse 14 Nuremberg Bavaria DE 90475 in the IEEE OUI registry entry for AC:04:25. This is the address the organization registered with the IEEE, which may differ from its current operating address.