Which company owns MAC address prefix FC:06:47?

MAC address prefix FC:06:47 is registered to Cortland Research, LLC in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with FC:06:47 has a network interface built by Cortland Research, LLC.

What is the OUI FC:06:47?

FC:06:47 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Cortland Research, LLC. It covers every address from FC:06:47:00:00:00 to FC:06:47:FF:FF:FF, or 16,777,216 addresses in total. It is also written FC-06-47.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in FC:06:47:00:00:00 that is FC:06:47 — 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 Cortland Research, LLC located?

Cortland Research, LLC is listed at 12 S Main St., Ste 207 Homer NY US 13077 in the IEEE OUI registry entry for FC:06:47. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Cortland Research, LLC

MAC address prefix FC:06:47 is registered to Cortland Research, LLC in the IEEE OUI registry. Any device whose MAC address begins with FC:06:47 has a network interface built by Cortland Research, LLC. 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:06:47:00:00:00 to FC:06:47:FF:FF:FF.

OUI prefix: FC:06:47
Hyphen form: FC-06-47
MAC range: FC:06:47:00:00:00 – FC:06:47:FF:FF:FF
Addresses in block: 16,777,216
Organization: Cortland Research, LLC
Address: 12 S Main St., Ste 207 Homer NY US 13077
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 "Cortland Research, LLC"
archived source →
2026-07-17Assigned to "Cortland Research, LLC"

Nearby in the registry

The prefixes assigned immediately before and after FC:06:47:

FAQ

Which company owns MAC address prefix FC:06:47?: MAC address prefix FC:06:47 is registered to Cortland Research, LLC in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with FC:06:47 has a network interface built by Cortland Research, LLC.
What is the OUI FC:06:47?: FC:06:47 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Cortland Research, LLC. It covers every address from FC:06:47:00:00:00 to FC:06:47:FF:FF:FF, or 16,777,216 addresses in total. It is also written FC-06-47.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in FC:06:47:00:00:00 that is FC:06:47 — 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 Cortland Research, LLC located?: Cortland Research, LLC is listed at 12 S Main St., Ste 207 Homer NY US 13077 in the IEEE OUI registry entry for FC:06:47. This is the address the organization registered with the IEEE, which may differ from its current operating address.