Which company owns MAC address prefix 08:42:18?

MAC address prefix 08:42:18 is registered to Asyril SA in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 08:42:18 has a network interface built by Asyril SA.

What is the OUI 08:42:18?

08:42:18 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Asyril SA. It covers every address from 08:42:18:00:00:00 to 08:42:18:FF:FF:FF, or 16,777,216 addresses in total. It is also written 08-42-18.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 08:42:18:00:00:00 that is 08:42:18 — 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 Asyril SA located?

Asyril SA is listed at Z.I. du Vivier 22 Villaz-St-Pierre Fribourg CH 1690 in the IEEE OUI registry entry for 08:42:18. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Asyril SA

MAC address prefix 08:42:18 is registered to Asyril SA in the IEEE OUI registry. Any device whose MAC address begins with 08:42:18 has a network interface built by Asyril SA. 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 08:42:18:00:00:00 to 08:42:18:FF:FF:FF.

OUI prefix: 08:42:18
Hyphen form: 08-42-18
MAC range: 08:42:18:00:00:00 – 08:42:18:FF:FF:FF
Addresses in block: 16,777,216
Organization: Asyril SA
Address: Z.I. du Vivier 22 Villaz-St-Pierre Fribourg CH 1690
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 (1)

The IEEE registry publishes current state only — this is the change record we've kept since we started tracking it daily.

2026-07-17Assigned to "Asyril SA"

Nearby in the registry

The prefixes assigned immediately before and after 08:42:18:

FAQ

Which company owns MAC address prefix 08:42:18?: MAC address prefix 08:42:18 is registered to Asyril SA in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 08:42:18 has a network interface built by Asyril SA.
What is the OUI 08:42:18?: 08:42:18 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Asyril SA. It covers every address from 08:42:18:00:00:00 to 08:42:18:FF:FF:FF, or 16,777,216 addresses in total. It is also written 08-42-18.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 08:42:18:00:00:00 that is 08:42:18 — 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 Asyril SA located?: Asyril SA is listed at Z.I. du Vivier 22 Villaz-St-Pierre Fribourg CH 1690 in the IEEE OUI registry entry for 08:42:18. This is the address the organization registered with the IEEE, which may differ from its current operating address.