Which company owns MAC address prefix 78:9F:4C?

MAC address prefix 78:9F:4C is registered to HOERBIGER Elektronik GmbH in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 78:9F:4C has a network interface built by HOERBIGER Elektronik GmbH.

What is the OUI 78:9F:4C?

78:9F:4C is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to HOERBIGER Elektronik GmbH. It covers every address from 78:9F:4C:00:00:00 to 78:9F:4C:FF:FF:FF, or 16,777,216 addresses in total. It is also written 78-9F-4C.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 78:9F:4C:00:00:00 that is 78:9F:4C — 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 HOERBIGER Elektronik GmbH located?

HOERBIGER Elektronik GmbH is listed at Justinus-Kernerstr. 7 Ammerbuch Baden-Wuerttemberg DE D-72119 in the IEEE OUI registry entry for 78:9F:4C. This is the address the organization registered with the IEEE, which may differ from its current operating address.

HOERBIGER Elektronik GmbH

MAC address prefix 78:9F:4C is registered to HOERBIGER Elektronik GmbH in the IEEE OUI registry. Any device whose MAC address begins with 78:9F:4C has a network interface built by HOERBIGER Elektronik 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 78:9F:4C:00:00:00 to 78:9F:4C:FF:FF:FF.

OUI prefix: 78:9F:4C
Hyphen form: 78-9F-4C
MAC range: 78:9F:4C:00:00:00 – 78:9F:4C:FF:FF:FF
Addresses in block: 16,777,216
Organization: HOERBIGER Elektronik GmbH
Address: Justinus-Kernerstr. 7 Ammerbuch Baden-Wuerttemberg DE D-72119
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 "HOERBIGER Elektronik GmbH"
archived source →
2026-07-17Assigned to "HOERBIGER Elektronik GmbH"

Nearby in the registry

The prefixes assigned immediately before and after 78:9F:4C:

FAQ

Which company owns MAC address prefix 78:9F:4C?: MAC address prefix 78:9F:4C is registered to HOERBIGER Elektronik GmbH in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 78:9F:4C has a network interface built by HOERBIGER Elektronik GmbH.
What is the OUI 78:9F:4C?: 78:9F:4C is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to HOERBIGER Elektronik GmbH. It covers every address from 78:9F:4C:00:00:00 to 78:9F:4C:FF:FF:FF, or 16,777,216 addresses in total. It is also written 78-9F-4C.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 78:9F:4C:00:00:00 that is 78:9F:4C — 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 HOERBIGER Elektronik GmbH located?: HOERBIGER Elektronik GmbH is listed at Justinus-Kernerstr. 7 Ammerbuch Baden-Wuerttemberg DE D-72119 in the IEEE OUI registry entry for 78:9F:4C. This is the address the organization registered with the IEEE, which may differ from its current operating address.