Which company owns MAC address prefix 54:27:22?

MAC address prefix 54:27:22 is registered to Lacroix in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 54:27:22 has a network interface built by Lacroix.

What is the OUI 54:27:22?

54:27:22 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Lacroix. It covers every address from 54:27:22:00:00:00 to 54:27:22:FF:FF:FF, or 16,777,216 addresses in total. It is also written 54-27-22.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 54:27:22:00:00:00 that is 54:27:22 — 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 Lacroix located?

Lacroix is listed at 17 Rue Océane Saint-Herblain FR 44800 in the IEEE OUI registry entry for 54:27:22. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Lacroix

MAC address prefix 54:27:22 is registered to Lacroix in the IEEE OUI registry. Any device whose MAC address begins with 54:27:22 has a network interface built by Lacroix. 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 54:27:22:00:00:00 to 54:27:22:FF:FF:FF.

OUI prefix: 54:27:22
Hyphen form: 54-27-22
MAC range: 54:27:22:00:00:00 – 54:27:22:FF:FF:FF
Addresses in block: 16,777,216
Organization: Lacroix
Address: 17 Rue Océane Saint-Herblain FR 44800
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.

2024-11-20Assigned to "Lacroix"
archived source →
2026-07-17Assigned to "Lacroix"

Nearby in the registry

The prefixes assigned immediately before and after 54:27:22:

FAQ

Which company owns MAC address prefix 54:27:22?: MAC address prefix 54:27:22 is registered to Lacroix in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 54:27:22 has a network interface built by Lacroix.
What is the OUI 54:27:22?: 54:27:22 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Lacroix. It covers every address from 54:27:22:00:00:00 to 54:27:22:FF:FF:FF, or 16,777,216 addresses in total. It is also written 54-27-22.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 54:27:22:00:00:00 that is 54:27:22 — 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 Lacroix located?: Lacroix is listed at 17 Rue Océane Saint-Herblain FR 44800 in the IEEE OUI registry entry for 54:27:22. This is the address the organization registered with the IEEE, which may differ from its current operating address.