Which company owns MAC address prefix 18:AF:9F?

MAC address prefix 18:AF:9F is registered to DIGITRONIC Automationsanlagen GmbH in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 18:AF:9F has a network interface built by DIGITRONIC Automationsanlagen GmbH.

What is the OUI 18:AF:9F?

18:AF:9F is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to DIGITRONIC Automationsanlagen GmbH. It covers every address from 18:AF:9F:00:00:00 to 18:AF:9F:FF:FF:FF, or 16,777,216 addresses in total. It is also written 18-AF-9F.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 18:AF:9F:00:00:00 that is 18:AF:9F — 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 DIGITRONIC Automationsanlagen GmbH located?

DIGITRONIC Automationsanlagen GmbH is listed at Auf der Langwies 1 Wallbach Hessen DE 65510 in the IEEE OUI registry entry for 18:AF:9F. This is the address the organization registered with the IEEE, which may differ from its current operating address.

DIGITRONIC Automationsanlagen GmbH

MAC address prefix 18:AF:9F is registered to DIGITRONIC Automationsanlagen GmbH in the IEEE OUI registry. Any device whose MAC address begins with 18:AF:9F has a network interface built by DIGITRONIC Automationsanlagen 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 18:AF:9F:00:00:00 to 18:AF:9F:FF:FF:FF.

OUI prefix: 18:AF:9F
Hyphen form: 18-AF-9F
MAC range: 18:AF:9F:00:00:00 – 18:AF:9F:FF:FF:FF
Addresses in block: 16,777,216
Organization: DIGITRONIC Automationsanlagen GmbH
Address: Auf der Langwies 1 Wallbach Hessen DE 65510
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 "DIGITRONIC Automationsanlagen GmbH"
archived source →
2026-07-17Assigned to "DIGITRONIC Automationsanlagen GmbH"

Nearby in the registry

The prefixes assigned immediately before and after 18:AF:9F:

FAQ

Which company owns MAC address prefix 18:AF:9F?: MAC address prefix 18:AF:9F is registered to DIGITRONIC Automationsanlagen GmbH in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 18:AF:9F has a network interface built by DIGITRONIC Automationsanlagen GmbH.
What is the OUI 18:AF:9F?: 18:AF:9F is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to DIGITRONIC Automationsanlagen GmbH. It covers every address from 18:AF:9F:00:00:00 to 18:AF:9F:FF:FF:FF, or 16,777,216 addresses in total. It is also written 18-AF-9F.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 18:AF:9F:00:00:00 that is 18:AF:9F — 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 DIGITRONIC Automationsanlagen GmbH located?: DIGITRONIC Automationsanlagen GmbH is listed at Auf der Langwies 1 Wallbach Hessen DE 65510 in the IEEE OUI registry entry for 18:AF:9F. This is the address the organization registered with the IEEE, which may differ from its current operating address.