Which company owns MAC address prefix FC:1D:84?

MAC address prefix FC:1D:84 is registered to Autobase in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with FC:1D:84 has a network interface built by Autobase.

What is the OUI FC:1D:84?

FC:1D:84 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Autobase. It covers every address from FC:1D:84:00:00:00 to FC:1D:84:FF:FF:FF, or 16,777,216 addresses in total. It is also written FC-1D-84.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in FC:1D:84:00:00:00 that is FC:1D:84 — 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 Autobase located?

Autobase is listed at 1201, Biz Center, SKnTechno Park, 124, Sagimakgol-ro, Jungwon-gu, Seongnam-si, Gyeonggi-do Seongnam Gyeonggi KR 462-721 in the IEEE OUI registry entry for FC:1D:84. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Autobase

MAC address prefix FC:1D:84 is registered to Autobase in the IEEE OUI registry. Any device whose MAC address begins with FC:1D:84 has a network interface built by Autobase. 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:1D:84:00:00:00 to FC:1D:84:FF:FF:FF.

OUI prefix: FC:1D:84
Hyphen form: FC-1D-84
MAC range: FC:1D:84:00:00:00 – FC:1D:84:FF:FF:FF
Addresses in block: 16,777,216
Organization: Autobase
Address: 1201, Biz Center, SKnTechno Park, 124, Sagimakgol-ro, Jungwon-gu, Seongnam-si, Gyeonggi-do Seongnam Gyeonggi KR 462-721
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 "Autobase"
archived source →
2026-07-17Assigned to "Autobase"

Nearby in the registry

The prefixes assigned immediately before and after FC:1D:84:

FAQ

Which company owns MAC address prefix FC:1D:84?: MAC address prefix FC:1D:84 is registered to Autobase in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with FC:1D:84 has a network interface built by Autobase.
What is the OUI FC:1D:84?: FC:1D:84 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Autobase. It covers every address from FC:1D:84:00:00:00 to FC:1D:84:FF:FF:FF, or 16,777,216 addresses in total. It is also written FC-1D-84.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in FC:1D:84:00:00:00 that is FC:1D:84 — 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 Autobase located?: Autobase is listed at 1201, Biz Center, SKnTechno Park, 124, Sagimakgol-ro, Jungwon-gu, Seongnam-si, Gyeonggi-do Seongnam Gyeonggi KR 462-721 in the IEEE OUI registry entry for FC:1D:84. This is the address the organization registered with the IEEE, which may differ from its current operating address.