Which company owns MAC address prefix 00:04:FC?

MAC address prefix 00:04:FC is registered to Stratus Technologies in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 00:04:FC has a network interface built by Stratus Technologies.

What is the OUI 00:04:FC?

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

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 00:04:FC:00:00:00 that is 00:04:FC — 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 Stratus Technologies located?

Stratus Technologies is listed at 5 Mill and Main Place, Suite 500 Maynard MA US 01754 in the IEEE OUI registry entry for 00:04:FC. This is the address the organization registered with the IEEE, which may differ from its current operating address.

How many MAC prefixes does Stratus Technologies own?

Stratus Technologies holds 3 OUI prefixes in the IEEE registry, of which 00:04:FC is one. A device made by Stratus Technologies could carry a MAC address from any of them.

Stratus Technologies

MAC address prefix 00:04:FC is registered to Stratus Technologies in the IEEE OUI registry. Any device whose MAC address begins with 00:04:FC has a network interface built by Stratus Technologies. 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 00:04:FC:00:00:00 to 00:04:FC:FF:FF:FF.

OUI prefix: 00:04:FC
Hyphen form: 00-04-FC
MAC range: 00:04:FC:00:00:00 – 00:04:FC:FF:FF:FF
Addresses in block: 16,777,216
Organization: Stratus Technologies
Address: 5 Mill and Main Place, Suite 500 Maynard MA US 01754
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.

Other prefixes from Stratus Technologies

Stratus Technologies holds 3 OUI prefixes in total. A device with this exact prefix could just as well carry any of these:

Assignment history (3)

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 "Stratus Computer (DE), Inc."
archived source →
2018-12-21Renamed from "Stratus Computer (DE), Inc." to "Stratus Technologies"
archived source →
2026-07-17Assigned to "Stratus Technologies"

Nearby in the registry

The prefixes assigned immediately before and after 00:04:FC:

FAQ

Which company owns MAC address prefix 00:04:FC?: MAC address prefix 00:04:FC is registered to Stratus Technologies in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 00:04:FC has a network interface built by Stratus Technologies.
What is the OUI 00:04:FC?: 00:04:FC is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Stratus Technologies. It covers every address from 00:04:FC:00:00:00 to 00:04:FC:FF:FF:FF, or 16,777,216 addresses in total. It is also written 00-04-FC.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 00:04:FC:00:00:00 that is 00:04:FC — 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 Stratus Technologies located?: Stratus Technologies is listed at 5 Mill and Main Place, Suite 500 Maynard MA US 01754 in the IEEE OUI registry entry for 00:04:FC. This is the address the organization registered with the IEEE, which may differ from its current operating address.
How many MAC prefixes does Stratus Technologies own?: Stratus Technologies holds 3 OUI prefixes in the IEEE registry, of which 00:04:FC is one. A device made by Stratus Technologies could carry a MAC address from any of them.