Which company owns MAC address prefix 6C:4E:86?

MAC address prefix 6C:4E:86 is registered to Third Millennium Systems Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 6C:4E:86 has a network interface built by Third Millennium Systems Ltd..

What is the OUI 6C:4E:86?

6C:4E:86 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Third Millennium Systems Ltd.. It covers every address from 6C:4E:86:00:00:00 to 6C:4E:86:FF:FF:FF, or 16,777,216 addresses in total. It is also written 6C-4E-86.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 6C:4E:86:00:00:00 that is 6C:4E:86 — 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 Third Millennium Systems Ltd. located?

Third Millennium Systems Ltd. is listed at 18/19 Torfaen Business Centre, Panteg Way New Inn, Pontypool Torfaen GB NP4 0LS in the IEEE OUI registry entry for 6C:4E:86. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Third Millennium Systems Ltd.

MAC address prefix 6C:4E:86 is registered to Third Millennium Systems Ltd. in the IEEE OUI registry. Any device whose MAC address begins with 6C:4E:86 has a network interface built by Third Millennium Systems 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:4E:86:00:00:00 to 6C:4E:86:FF:FF:FF.

OUI prefix: 6C:4E:86
Hyphen form: 6C-4E-86
MAC range: 6C:4E:86:00:00:00 – 6C:4E:86:FF:FF:FF
Addresses in block: 16,777,216
Organization: Third Millennium Systems Ltd.
Address: 18/19 Torfaen Business Centre, Panteg Way New Inn, Pontypool Torfaen GB NP4 0LS
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.

2017-09-08Assigned to "Third Millennium Systems Ltd."
archived source →
2026-07-17Assigned to "Third Millennium Systems Ltd."

Nearby in the registry

The prefixes assigned immediately before and after 6C:4E:86:

FAQ

Which company owns MAC address prefix 6C:4E:86?: MAC address prefix 6C:4E:86 is registered to Third Millennium Systems Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 6C:4E:86 has a network interface built by Third Millennium Systems Ltd..
What is the OUI 6C:4E:86?: 6C:4E:86 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Third Millennium Systems Ltd.. It covers every address from 6C:4E:86:00:00:00 to 6C:4E:86:FF:FF:FF, or 16,777,216 addresses in total. It is also written 6C-4E-86.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 6C:4E:86:00:00:00 that is 6C:4E:86 — 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 Third Millennium Systems Ltd. located?: Third Millennium Systems Ltd. is listed at 18/19 Torfaen Business Centre, Panteg Way New Inn, Pontypool Torfaen GB NP4 0LS in the IEEE OUI registry entry for 6C:4E:86. This is the address the organization registered with the IEEE, which may differ from its current operating address.