Which company owns MAC address prefix FC:52:CE?

MAC address prefix FC:52:CE is registered to Control iD in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with FC:52:CE has a network interface built by Control iD.

What is the OUI FC:52:CE?

FC:52:CE is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Control iD. It covers every address from FC:52:CE:00:00:00 to FC:52:CE:FF:FF:FF, or 16,777,216 addresses in total. It is also written FC-52-CE.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in FC:52:CE:00:00:00 that is FC:52:CE — 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 Control iD located?

Control iD is listed at Rua Hungria, 574 São Paulo SP BR 01455-000 in the IEEE OUI registry entry for FC:52:CE. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Control iD

MAC address prefix FC:52:CE is registered to Control iD in the IEEE OUI registry. Any device whose MAC address begins with FC:52:CE has a network interface built by Control iD. 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:52:CE:00:00:00 to FC:52:CE:FF:FF:FF.

OUI prefix: FC:52:CE
Hyphen form: FC-52-CE
MAC range: FC:52:CE:00:00:00 – FC:52:CE:FF:FF:FF
Addresses in block: 16,777,216
Organization: Control iD
Address: Rua Hungria, 574 São Paulo SP BR 01455-000
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 "Control iD"
archived source →
2026-07-17Assigned to "Control iD"

Nearby in the registry

The prefixes assigned immediately before and after FC:52:CE:

FAQ

Which company owns MAC address prefix FC:52:CE?: MAC address prefix FC:52:CE is registered to Control iD in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with FC:52:CE has a network interface built by Control iD.
What is the OUI FC:52:CE?: FC:52:CE is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Control iD. It covers every address from FC:52:CE:00:00:00 to FC:52:CE:FF:FF:FF, or 16,777,216 addresses in total. It is also written FC-52-CE.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in FC:52:CE:00:00:00 that is FC:52:CE — 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 Control iD located?: Control iD is listed at Rua Hungria, 574 São Paulo SP BR 01455-000 in the IEEE OUI registry entry for FC:52:CE. This is the address the organization registered with the IEEE, which may differ from its current operating address.