Which company owns MAC address prefix 6C:A9:06?

MAC address prefix 6C:A9:06 is registered to Telefield Ltd in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 6C:A9:06 has a network interface built by Telefield Ltd.

What is the OUI 6C:A9:06?

6C:A9:06 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Telefield Ltd. It covers every address from 6C:A9:06:00:00:00 to 6C:A9:06:FF:FF:FF, or 16,777,216 addresses in total. It is also written 6C-A9-06.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 6C:A9:06:00:00:00 that is 6C:A9:06 — 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 Telefield Ltd located?

Telefield Ltd is listed at Flat D,2/F., Valiant Industrial Centre,2-12 Au Pui Wan Street, Hongkong CN 852 in the IEEE OUI registry entry for 6C:A9:06. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Telefield Ltd

MAC address prefix 6C:A9:06 is registered to Telefield Ltd in the IEEE OUI registry. Any device whose MAC address begins with 6C:A9:06 has a network interface built by Telefield 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 6C:A9:06:00:00:00 to 6C:A9:06:FF:FF:FF.

OUI prefix: 6C:A9:06
Hyphen form: 6C-A9-06
MAC range: 6C:A9:06:00:00:00 – 6C:A9:06:FF:FF:FF
Addresses in block: 16,777,216
Organization: Telefield Ltd
Address: Flat D,2/F., Valiant Industrial Centre,2-12 Au Pui Wan Street, Hongkong CN 852
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 "Telefield Ltd"
archived source →
2026-07-17Assigned to "Telefield Ltd"

Nearby in the registry

The prefixes assigned immediately before and after 6C:A9:06:

FAQ

Which company owns MAC address prefix 6C:A9:06?: MAC address prefix 6C:A9:06 is registered to Telefield Ltd in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 6C:A9:06 has a network interface built by Telefield Ltd.
What is the OUI 6C:A9:06?: 6C:A9:06 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Telefield Ltd. It covers every address from 6C:A9:06:00:00:00 to 6C:A9:06:FF:FF:FF, or 16,777,216 addresses in total. It is also written 6C-A9-06.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 6C:A9:06:00:00:00 that is 6C:A9:06 — 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 Telefield Ltd located?: Telefield Ltd is listed at Flat D,2/F., Valiant Industrial Centre,2-12 Au Pui Wan Street, Hongkong CN 852 in the IEEE OUI registry entry for 6C:A9:06. This is the address the organization registered with the IEEE, which may differ from its current operating address.