Which company owns MAC address prefix A0:A6:5C?

MAC address prefix A0:A6:5C is registered to Supercomputing Systems AG in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with A0:A6:5C has a network interface built by Supercomputing Systems AG.

What is the OUI A0:A6:5C?

A0:A6:5C is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Supercomputing Systems AG. It covers every address from A0:A6:5C:00:00:00 to A0:A6:5C:FF:FF:FF, or 16,777,216 addresses in total. It is also written A0-A6-5C.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in A0:A6:5C:00:00:00 that is A0:A6:5C — 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 Supercomputing Systems AG located?

Supercomputing Systems AG is listed at Technoparkstrasse 1 Zurich ZH CH 8005 in the IEEE OUI registry entry for A0:A6:5C. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Supercomputing Systems AG

MAC address prefix A0:A6:5C is registered to Supercomputing Systems AG in the IEEE OUI registry. Any device whose MAC address begins with A0:A6:5C has a network interface built by Supercomputing Systems AG. 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 A0:A6:5C:00:00:00 to A0:A6:5C:FF:FF:FF.

OUI prefix: A0:A6:5C
Hyphen form: A0-A6-5C
MAC range: A0:A6:5C:00:00:00 – A0:A6:5C:FF:FF:FF
Addresses in block: 16,777,216
Organization: Supercomputing Systems AG
Address: Technoparkstrasse 1 Zurich ZH CH 8005
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 "Supercomputing Systems AG"
archived source →
2026-07-17Assigned to "Supercomputing Systems AG"

Nearby in the registry

The prefixes assigned immediately before and after A0:A6:5C:

FAQ

Which company owns MAC address prefix A0:A6:5C?: MAC address prefix A0:A6:5C is registered to Supercomputing Systems AG in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with A0:A6:5C has a network interface built by Supercomputing Systems AG.
What is the OUI A0:A6:5C?: A0:A6:5C is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Supercomputing Systems AG. It covers every address from A0:A6:5C:00:00:00 to A0:A6:5C:FF:FF:FF, or 16,777,216 addresses in total. It is also written A0-A6-5C.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in A0:A6:5C:00:00:00 that is A0:A6:5C — 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 Supercomputing Systems AG located?: Supercomputing Systems AG is listed at Technoparkstrasse 1 Zurich ZH CH 8005 in the IEEE OUI registry entry for A0:A6:5C. This is the address the organization registered with the IEEE, which may differ from its current operating address.