Which company owns MAC address prefix AC:6F:D9?

MAC address prefix AC:6F:D9 is registered to Valueplus Inc. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with AC:6F:D9 has a network interface built by Valueplus Inc..

What is the OUI AC:6F:D9?

AC:6F:D9 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Valueplus Inc.. It covers every address from AC:6F:D9:00:00:00 to AC:6F:D9:FF:FF:FF, or 16,777,216 addresses in total. It is also written AC-6F-D9.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in AC:6F:D9:00:00:00 that is AC:6F:D9 — 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 Valueplus Inc. located?

Valueplus Inc. is listed at #803, Sicox Tower, 513-14, Seongnam-si Gyeonggi-do KR 462-806 in the IEEE OUI registry entry for AC:6F:D9. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Valueplus Inc.

MAC address prefix AC:6F:D9 is registered to Valueplus Inc. in the IEEE OUI registry. Any device whose MAC address begins with AC:6F:D9 has a network interface built by Valueplus Inc.. 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 AC:6F:D9:00:00:00 to AC:6F:D9:FF:FF:FF.

OUI prefix: AC:6F:D9
Hyphen form: AC-6F-D9
MAC range: AC:6F:D9:00:00:00 – AC:6F:D9:FF:FF:FF
Addresses in block: 16,777,216
Organization: Valueplus Inc.
Address: #803, Sicox Tower, 513-14, Seongnam-si Gyeonggi-do KR 462-806
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 "Valueplus Inc."
archived source →
2026-07-17Assigned to "Valueplus Inc."

Nearby in the registry

The prefixes assigned immediately before and after AC:6F:D9:

FAQ

Which company owns MAC address prefix AC:6F:D9?: MAC address prefix AC:6F:D9 is registered to Valueplus Inc. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with AC:6F:D9 has a network interface built by Valueplus Inc..
What is the OUI AC:6F:D9?: AC:6F:D9 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Valueplus Inc.. It covers every address from AC:6F:D9:00:00:00 to AC:6F:D9:FF:FF:FF, or 16,777,216 addresses in total. It is also written AC-6F-D9.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in AC:6F:D9:00:00:00 that is AC:6F:D9 — 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 Valueplus Inc. located?: Valueplus Inc. is listed at #803, Sicox Tower, 513-14, Seongnam-si Gyeonggi-do KR 462-806 in the IEEE OUI registry entry for AC:6F:D9. This is the address the organization registered with the IEEE, which may differ from its current operating address.