Which company owns MAC address prefix AC:2F:A8?

MAC address prefix AC:2F:A8 is registered to Humannix Co.,Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with AC:2F:A8 has a network interface built by Humannix Co.,Ltd..

What is the OUI AC:2F:A8?

AC:2F:A8 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Humannix Co.,Ltd.. It covers every address from AC:2F:A8:00:00:00 to AC:2F:A8:FF:FF:FF, or 16,777,216 addresses in total. It is also written AC-2F-A8.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in AC:2F:A8:00:00:00 that is AC:2F:A8 — 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 Humannix Co.,Ltd. located?

Humannix Co.,Ltd. is listed at #402, 98-4, Songpa-Dong, Songpa-Gu Seoul KR 138-170 in the IEEE OUI registry entry for AC:2F:A8. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Humannix Co.,Ltd.

MAC address prefix AC:2F:A8 is registered to Humannix Co.,Ltd. in the IEEE OUI registry. Any device whose MAC address begins with AC:2F:A8 has a network interface built by Humannix Co.,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 AC:2F:A8:00:00:00 to AC:2F:A8:FF:FF:FF.

OUI prefix: AC:2F:A8
Hyphen form: AC-2F-A8
MAC range: AC:2F:A8:00:00:00 – AC:2F:A8:FF:FF:FF
Addresses in block: 16,777,216
Organization: Humannix Co.,Ltd.
Address: #402, 98-4, Songpa-Dong, Songpa-Gu Seoul KR 138-170
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 "Humannix Co.,Ltd."
archived source →
2026-07-17Assigned to "Humannix Co.,Ltd."

Nearby in the registry

The prefixes assigned immediately before and after AC:2F:A8:

FAQ

Which company owns MAC address prefix AC:2F:A8?: MAC address prefix AC:2F:A8 is registered to Humannix Co.,Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with AC:2F:A8 has a network interface built by Humannix Co.,Ltd..
What is the OUI AC:2F:A8?: AC:2F:A8 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Humannix Co.,Ltd.. It covers every address from AC:2F:A8:00:00:00 to AC:2F:A8:FF:FF:FF, or 16,777,216 addresses in total. It is also written AC-2F-A8.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in AC:2F:A8:00:00:00 that is AC:2F:A8 — 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 Humannix Co.,Ltd. located?: Humannix Co.,Ltd. is listed at #402, 98-4, Songpa-Dong, Songpa-Gu Seoul KR 138-170 in the IEEE OUI registry entry for AC:2F:A8. This is the address the organization registered with the IEEE, which may differ from its current operating address.