Which company owns MAC address prefix F4:E2:04?

MAC address prefix F4:E2:04 is registered to COYOTE SYSTEM in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with F4:E2:04 has a network interface built by COYOTE SYSTEM.

What is the OUI F4:E2:04?

F4:E2:04 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to COYOTE SYSTEM. It covers every address from F4:E2:04:00:00:00 to F4:E2:04:FF:FF:FF, or 16,777,216 addresses in total. It is also written F4-E2-04.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in F4:E2:04:00:00:00 that is F4:E2:04 — 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 COYOTE SYSTEM located?

COYOTE SYSTEM is listed at 1, rue Royale Saint-Cloud FR 92210 in the IEEE OUI registry entry for F4:E2:04. This is the address the organization registered with the IEEE, which may differ from its current operating address.

COYOTE SYSTEM

MAC address prefix F4:E2:04 is registered to COYOTE SYSTEM in the IEEE OUI registry. Any device whose MAC address begins with F4:E2:04 has a network interface built by COYOTE SYSTEM. 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 F4:E2:04:00:00:00 to F4:E2:04:FF:FF:FF.

OUI prefix: F4:E2:04
Hyphen form: F4-E2-04
MAC range: F4:E2:04:00:00:00 – F4:E2:04:FF:FF:FF
Addresses in block: 16,777,216
Organization: COYOTE SYSTEM
Address: 1, rue Royale Saint-Cloud FR 92210
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 (3)

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

2017-09-08Assigned to "Traqueur"
archived source →
2022-07-11Renamed from "Traqueur" to "COYOTE SYSTEM"
archived source →
2026-07-17Assigned to "COYOTE SYSTEM"

Nearby in the registry

The prefixes assigned immediately before and after F4:E2:04:

FAQ

Which company owns MAC address prefix F4:E2:04?: MAC address prefix F4:E2:04 is registered to COYOTE SYSTEM in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with F4:E2:04 has a network interface built by COYOTE SYSTEM.
What is the OUI F4:E2:04?: F4:E2:04 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to COYOTE SYSTEM. It covers every address from F4:E2:04:00:00:00 to F4:E2:04:FF:FF:FF, or 16,777,216 addresses in total. It is also written F4-E2-04.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in F4:E2:04:00:00:00 that is F4:E2:04 — 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 COYOTE SYSTEM located?: COYOTE SYSTEM is listed at 1, rue Royale Saint-Cloud FR 92210 in the IEEE OUI registry entry for F4:E2:04. This is the address the organization registered with the IEEE, which may differ from its current operating address.