Which company owns MAC address prefix D0:D2:12?

MAC address prefix D0:D2:12 is registered to K2NET Co.,Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with D0:D2:12 has a network interface built by K2NET Co.,Ltd..

What is the OUI D0:D2:12?

D0:D2:12 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to K2NET Co.,Ltd.. It covers every address from D0:D2:12:00:00:00 to D0:D2:12:FF:FF:FF, or 16,777,216 addresses in total. It is also written D0-D2-12.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in D0:D2:12:00:00:00 that is D0:D2:12 — 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 K2NET Co.,Ltd. located?

K2NET Co.,Ltd. is listed at K2Net Building Seoul KR 158-092 in the IEEE OUI registry entry for D0:D2:12. This is the address the organization registered with the IEEE, which may differ from its current operating address.

K2NET Co.,Ltd.

MAC address prefix D0:D2:12 is registered to K2NET Co.,Ltd. in the IEEE OUI registry. Any device whose MAC address begins with D0:D2:12 has a network interface built by K2NET 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 D0:D2:12:00:00:00 to D0:D2:12:FF:FF:FF.

OUI prefix: D0:D2:12
Hyphen form: D0-D2-12
MAC range: D0:D2:12:00:00:00 – D0:D2:12:FF:FF:FF
Addresses in block: 16,777,216
Organization: K2NET Co.,Ltd.
Address: K2Net Building Seoul KR 158-092
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 "K2NET Co.,Ltd."
archived source →
2026-07-17Assigned to "K2NET Co.,Ltd."

Nearby in the registry

The prefixes assigned immediately before and after D0:D2:12:

FAQ

Which company owns MAC address prefix D0:D2:12?: MAC address prefix D0:D2:12 is registered to K2NET Co.,Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with D0:D2:12 has a network interface built by K2NET Co.,Ltd..
What is the OUI D0:D2:12?: D0:D2:12 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to K2NET Co.,Ltd.. It covers every address from D0:D2:12:00:00:00 to D0:D2:12:FF:FF:FF, or 16,777,216 addresses in total. It is also written D0-D2-12.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in D0:D2:12:00:00:00 that is D0:D2:12 — 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 K2NET Co.,Ltd. located?: K2NET Co.,Ltd. is listed at K2Net Building Seoul KR 158-092 in the IEEE OUI registry entry for D0:D2:12. This is the address the organization registered with the IEEE, which may differ from its current operating address.