Which company owns MAC address prefix 5C:B3:F6?

MAC address prefix 5C:B3:F6 is registered to Human, Incorporated in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 5C:B3:F6 has a network interface built by Human, Incorporated.

What is the OUI 5C:B3:F6?

5C:B3:F6 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Human, Incorporated. It covers every address from 5C:B3:F6:00:00:00 to 5C:B3:F6:FF:FF:FF, or 16,777,216 addresses in total. It is also written 5C-B3-F6.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 5C:B3:F6:00:00:00 that is 5C:B3:F6 — 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 Human, Incorporated located?

Human, Incorporated is listed at 3100 Airport Way S, 25-512 Seattle WA US 98134 in the IEEE OUI registry entry for 5C:B3:F6. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Human, Incorporated

MAC address prefix 5C:B3:F6 is registered to Human, Incorporated in the IEEE OUI registry. Any device whose MAC address begins with 5C:B3:F6 has a network interface built by Human, Incorporated. 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 5C:B3:F6:00:00:00 to 5C:B3:F6:FF:FF:FF.

OUI prefix: 5C:B3:F6
Hyphen form: 5C-B3-F6
MAC range: 5C:B3:F6:00:00:00 – 5C:B3:F6:FF:FF:FF
Addresses in block: 16,777,216
Organization: Human, Incorporated
Address: 3100 Airport Way S, 25-512 Seattle WA US 98134
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.

2018-12-21Assigned to "Human, Incorporated"
archived source →
2026-07-17Assigned to "Human, Incorporated"

Nearby in the registry

The prefixes assigned immediately before and after 5C:B3:F6:

FAQ

Which company owns MAC address prefix 5C:B3:F6?: MAC address prefix 5C:B3:F6 is registered to Human, Incorporated in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 5C:B3:F6 has a network interface built by Human, Incorporated.
What is the OUI 5C:B3:F6?: 5C:B3:F6 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Human, Incorporated. It covers every address from 5C:B3:F6:00:00:00 to 5C:B3:F6:FF:FF:FF, or 16,777,216 addresses in total. It is also written 5C-B3-F6.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 5C:B3:F6:00:00:00 that is 5C:B3:F6 — 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 Human, Incorporated located?: Human, Incorporated is listed at 3100 Airport Way S, 25-512 Seattle WA US 98134 in the IEEE OUI registry entry for 5C:B3:F6. This is the address the organization registered with the IEEE, which may differ from its current operating address.