Which company owns MAC address prefix FC:1B:FF?

MAC address prefix FC:1B:FF is registered to V-ZUG AG in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with FC:1B:FF has a network interface built by V-ZUG AG.

What is the OUI FC:1B:FF?

FC:1B:FF is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to V-ZUG AG. It covers every address from FC:1B:FF:00:00:00 to FC:1B:FF:FF:FF:FF, or 16,777,216 addresses in total. It is also written FC-1B-FF.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in FC:1B:FF:00:00:00 that is FC:1B:FF — 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 V-ZUG AG located?

V-ZUG AG is listed at Industriestrasse 66 Zug CH 6301 in the IEEE OUI registry entry for FC:1B:FF. This is the address the organization registered with the IEEE, which may differ from its current operating address.

V-ZUG AG

MAC address prefix FC:1B:FF is registered to V-ZUG AG in the IEEE OUI registry. Any device whose MAC address begins with FC:1B:FF has a network interface built by V-ZUG AG. 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:1B:FF:00:00:00 to FC:1B:FF:FF:FF:FF.

OUI prefix: FC:1B:FF
Hyphen form: FC-1B-FF
MAC range: FC:1B:FF:00:00:00 – FC:1B:FF:FF:FF:FF
Addresses in block: 16,777,216
Organization: V-ZUG AG
Address: Industriestrasse 66 Zug CH 6301
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 "V-ZUG AG"
archived source →
2026-07-17Assigned to "V-ZUG AG"

Nearby in the registry

The prefixes assigned immediately before and after FC:1B:FF:

FAQ

Which company owns MAC address prefix FC:1B:FF?: MAC address prefix FC:1B:FF is registered to V-ZUG AG in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with FC:1B:FF has a network interface built by V-ZUG AG.
What is the OUI FC:1B:FF?: FC:1B:FF is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to V-ZUG AG. It covers every address from FC:1B:FF:00:00:00 to FC:1B:FF:FF:FF:FF, or 16,777,216 addresses in total. It is also written FC-1B-FF.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in FC:1B:FF:00:00:00 that is FC:1B:FF — 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 V-ZUG AG located?: V-ZUG AG is listed at Industriestrasse 66 Zug CH 6301 in the IEEE OUI registry entry for FC:1B:FF. This is the address the organization registered with the IEEE, which may differ from its current operating address.