Which company owns MAC address prefix 9C:89:1E?

MAC address prefix 9C:89:1E is registered to FireBrick Ltd in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 9C:89:1E has a network interface built by FireBrick Ltd.

What is the OUI 9C:89:1E?

9C:89:1E is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to FireBrick Ltd. It covers every address from 9C:89:1E:00:00:00 to 9C:89:1E:FF:FF:FF, or 16,777,216 addresses in total. It is also written 9C-89-1E.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 9C:89:1E:00:00:00 that is 9C:89:1E — 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 FireBrick Ltd located?

FireBrick Ltd is listed at c/o Andrews & Arnold Ltd Enterprise Court Downmill Road Bracknell Berkshire GB RG12 1QS in the IEEE OUI registry entry for 9C:89:1E. This is the address the organization registered with the IEEE, which may differ from its current operating address.

FireBrick Ltd

MAC address prefix 9C:89:1E is registered to FireBrick Ltd in the IEEE OUI registry. Any device whose MAC address begins with 9C:89:1E has a network interface built by FireBrick Ltd. 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 9C:89:1E:00:00:00 to 9C:89:1E:FF:FF:FF.

OUI prefix: 9C:89:1E
Hyphen form: 9C-89-1E
MAC range: 9C:89:1E:00:00:00 – 9C:89:1E:FF:FF:FF
Addresses in block: 16,777,216
Organization: FireBrick Ltd
Address: c/o Andrews & Arnold Ltd Enterprise Court Downmill Road Bracknell Berkshire GB RG12 1QS
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.

2023-07-11Assigned to "FireBrick Ltd"
archived source →
2026-07-17Assigned to "FireBrick Ltd"

Nearby in the registry

The prefixes assigned immediately before and after 9C:89:1E:

FAQ

Which company owns MAC address prefix 9C:89:1E?: MAC address prefix 9C:89:1E is registered to FireBrick Ltd in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 9C:89:1E has a network interface built by FireBrick Ltd.
What is the OUI 9C:89:1E?: 9C:89:1E is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to FireBrick Ltd. It covers every address from 9C:89:1E:00:00:00 to 9C:89:1E:FF:FF:FF, or 16,777,216 addresses in total. It is also written 9C-89-1E.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 9C:89:1E:00:00:00 that is 9C:89:1E — 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 FireBrick Ltd located?: FireBrick Ltd is listed at c/o Andrews & Arnold Ltd Enterprise Court Downmill Road Bracknell Berkshire GB RG12 1QS in the IEEE OUI registry entry for 9C:89:1E. This is the address the organization registered with the IEEE, which may differ from its current operating address.