Which company owns MAC address prefix FC:50:90?

MAC address prefix FC:50:90 is registered to SIMEX Sp. z o.o. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with FC:50:90 has a network interface built by SIMEX Sp. z o.o..

What is the OUI FC:50:90?

FC:50:90 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to SIMEX Sp. z o.o.. It covers every address from FC:50:90:00:00:00 to FC:50:90:FF:FF:FF, or 16,777,216 addresses in total. It is also written FC-50-90.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in FC:50:90:00:00:00 that is FC:50:90 — 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 SIMEX Sp. z o.o. located?

SIMEX Sp. z o.o. is listed at ul. Wielopole 7 Gdañsk pomorskie PL 80-556 in the IEEE OUI registry entry for FC:50:90. This is the address the organization registered with the IEEE, which may differ from its current operating address.

SIMEX Sp. z o.o.

MAC address prefix FC:50:90 is registered to SIMEX Sp. z o.o. in the IEEE OUI registry. Any device whose MAC address begins with FC:50:90 has a network interface built by SIMEX Sp. z o.o.. 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 FC:50:90:00:00:00 to FC:50:90:FF:FF:FF.

OUI prefix: FC:50:90
Hyphen form: FC-50-90
MAC range: FC:50:90:00:00:00 – FC:50:90:FF:FF:FF
Addresses in block: 16,777,216
Organization: SIMEX Sp. z o.o.
Address: ul. Wielopole 7 Gdañsk pomorskie PL 80-556
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.

2016-07-29Assigned to "SIMEX Sp. z o.o."
archived source →
2026-07-17Assigned to "SIMEX Sp. z o.o."

Nearby in the registry

The prefixes assigned immediately before and after FC:50:90:

FAQ

Which company owns MAC address prefix FC:50:90?: MAC address prefix FC:50:90 is registered to SIMEX Sp. z o.o. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with FC:50:90 has a network interface built by SIMEX Sp. z o.o..
What is the OUI FC:50:90?: FC:50:90 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to SIMEX Sp. z o.o.. It covers every address from FC:50:90:00:00:00 to FC:50:90:FF:FF:FF, or 16,777,216 addresses in total. It is also written FC-50-90.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in FC:50:90:00:00:00 that is FC:50:90 — 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 SIMEX Sp. z o.o. located?: SIMEX Sp. z o.o. is listed at ul. Wielopole 7 Gdañsk pomorskie PL 80-556 in the IEEE OUI registry entry for FC:50:90. This is the address the organization registered with the IEEE, which may differ from its current operating address.