Which company owns MAC address prefix F0:7F:0C?

MAC address prefix F0:7F:0C is registered to Leopold Kostal GmbH &Co. KG in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with F0:7F:0C has a network interface built by Leopold Kostal GmbH &Co. KG.

What is the OUI F0:7F:0C?

F0:7F:0C is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Leopold Kostal GmbH &Co. KG. It covers every address from F0:7F:0C:00:00:00 to F0:7F:0C:FF:FF:FF, or 16,777,216 addresses in total. It is also written F0-7F-0C.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in F0:7F:0C:00:00:00 that is F0:7F:0C — 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 Leopold Kostal GmbH &Co. KG located?

Leopold Kostal GmbH &Co. KG is listed at An der Bellmerei 10 Luedenscheid NRW DE D-58513 in the IEEE OUI registry entry for F0:7F:0C. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Leopold Kostal GmbH &Co. KG

MAC address prefix F0:7F:0C is registered to Leopold Kostal GmbH &Co. KG in the IEEE OUI registry. Any device whose MAC address begins with F0:7F:0C has a network interface built by Leopold Kostal 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 F0:7F:0C:00:00:00 to F0:7F:0C:FF:FF:FF.

OUI prefix: F0:7F:0C
Hyphen form: F0-7F-0C
MAC range: F0:7F:0C:00:00:00 – F0:7F:0C:FF:FF:FF
Addresses in block: 16,777,216
Organization: Leopold Kostal GmbH &Co. KG
Address: An der Bellmerei 10 Luedenscheid NRW DE D-58513
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 "Leopold Kostal GmbH &Co. KG"
archived source →
2026-07-17Assigned to "Leopold Kostal GmbH &Co. KG"

Nearby in the registry

The prefixes assigned immediately before and after F0:7F:0C:

FAQ

Which company owns MAC address prefix F0:7F:0C?: MAC address prefix F0:7F:0C is registered to Leopold Kostal GmbH &Co. KG in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with F0:7F:0C has a network interface built by Leopold Kostal GmbH &Co. KG.
What is the OUI F0:7F:0C?: F0:7F:0C is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Leopold Kostal GmbH &Co. KG. It covers every address from F0:7F:0C:00:00:00 to F0:7F:0C:FF:FF:FF, or 16,777,216 addresses in total. It is also written F0-7F-0C.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in F0:7F:0C:00:00:00 that is F0:7F:0C — 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 Leopold Kostal GmbH &Co. KG located?: Leopold Kostal GmbH &Co. KG is listed at An der Bellmerei 10 Luedenscheid NRW DE D-58513 in the IEEE OUI registry entry for F0:7F:0C. This is the address the organization registered with the IEEE, which may differ from its current operating address.