Which company owns MAC address prefix 88:9F:AA?

MAC address prefix 88:9F:AA is registered to Hella Gutmann Solutions GmbH in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 88:9F:AA has a network interface built by Hella Gutmann Solutions GmbH.

What is the OUI 88:9F:AA?

88:9F:AA is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Hella Gutmann Solutions GmbH. It covers every address from 88:9F:AA:00:00:00 to 88:9F:AA:FF:FF:FF, or 16,777,216 addresses in total. It is also written 88-9F-AA.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 88:9F:AA:00:00:00 that is 88:9F:AA — 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 Hella Gutmann Solutions GmbH located?

Hella Gutmann Solutions GmbH is listed at Am Krebsbach 2 Ihringen Baden Württemberg DE 79241 in the IEEE OUI registry entry for 88:9F:AA. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Hella Gutmann Solutions GmbH

MAC address prefix 88:9F:AA is registered to Hella Gutmann Solutions GmbH in the IEEE OUI registry. Any device whose MAC address begins with 88:9F:AA has a network interface built by Hella Gutmann Solutions 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 88:9F:AA:00:00:00 to 88:9F:AA:FF:FF:FF.

OUI prefix: 88:9F:AA
Hyphen form: 88-9F-AA
MAC range: 88:9F:AA:00:00:00 – 88:9F:AA:FF:FF:FF
Addresses in block: 16,777,216
Organization: Hella Gutmann Solutions GmbH
Address: Am Krebsbach 2 Ihringen Baden Württemberg DE 79241
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.

2019-07-04Assigned to "Hella Gutmann Solutions GmbH"
archived source →
2026-07-17Assigned to "Hella Gutmann Solutions GmbH"

Nearby in the registry

The prefixes assigned immediately before and after 88:9F:AA:

FAQ

Which company owns MAC address prefix 88:9F:AA?: MAC address prefix 88:9F:AA is registered to Hella Gutmann Solutions GmbH in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 88:9F:AA has a network interface built by Hella Gutmann Solutions GmbH.
What is the OUI 88:9F:AA?: 88:9F:AA is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Hella Gutmann Solutions GmbH. It covers every address from 88:9F:AA:00:00:00 to 88:9F:AA:FF:FF:FF, or 16,777,216 addresses in total. It is also written 88-9F-AA.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 88:9F:AA:00:00:00 that is 88:9F:AA — 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 Hella Gutmann Solutions GmbH located?: Hella Gutmann Solutions GmbH is listed at Am Krebsbach 2 Ihringen Baden Württemberg DE 79241 in the IEEE OUI registry entry for 88:9F:AA. This is the address the organization registered with the IEEE, which may differ from its current operating address.