Which company owns MAC address prefix A0:41:2D?

MAC address prefix A0:41:2D is registered to Lansen Systems AB in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with A0:41:2D has a network interface built by Lansen Systems AB.

What is the OUI A0:41:2D?

A0:41:2D is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Lansen Systems AB. It covers every address from A0:41:2D:00:00:00 to A0:41:2D:FF:FF:FF, or 16,777,216 addresses in total. It is also written A0-41-2D.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in A0:41:2D:00:00:00 that is A0:41:2D — 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 Lansen Systems AB located?

Lansen Systems AB is listed at Skallebackavägen 3 Halmstad SE 30241 in the IEEE OUI registry entry for A0:41:2D. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Lansen Systems AB

MAC address prefix A0:41:2D is registered to Lansen Systems AB in the IEEE OUI registry. Any device whose MAC address begins with A0:41:2D has a network interface built by Lansen Systems AB. 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 A0:41:2D:00:00:00 to A0:41:2D:FF:FF:FF.

OUI prefix: A0:41:2D
Hyphen form: A0-41-2D
MAC range: A0:41:2D:00:00:00 – A0:41:2D:FF:FF:FF
Addresses in block: 16,777,216
Organization: Lansen Systems AB
Address: Skallebackavägen 3 Halmstad SE 30241
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.

2020-11-28Assigned to "Lansen Systems AB"
archived source →
2026-07-17Assigned to "Lansen Systems AB"

Nearby in the registry

The prefixes assigned immediately before and after A0:41:2D:

FAQ

Which company owns MAC address prefix A0:41:2D?: MAC address prefix A0:41:2D is registered to Lansen Systems AB in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with A0:41:2D has a network interface built by Lansen Systems AB.
What is the OUI A0:41:2D?: A0:41:2D is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Lansen Systems AB. It covers every address from A0:41:2D:00:00:00 to A0:41:2D:FF:FF:FF, or 16,777,216 addresses in total. It is also written A0-41-2D.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in A0:41:2D:00:00:00 that is A0:41:2D — 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 Lansen Systems AB located?: Lansen Systems AB is listed at Skallebackavägen 3 Halmstad SE 30241 in the IEEE OUI registry entry for A0:41:2D. This is the address the organization registered with the IEEE, which may differ from its current operating address.