Which company owns MAC address prefix DC:C6:22?

MAC address prefix DC:C6:22 is registered to BUHEUNG SYSTEM in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with DC:C6:22 has a network interface built by BUHEUNG SYSTEM.

What is the OUI DC:C6:22?

DC:C6:22 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to BUHEUNG SYSTEM. It covers every address from DC:C6:22:00:00:00 to DC:C6:22:FF:FF:FF, or 16,777,216 addresses in total. It is also written DC-C6-22.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in DC:C6:22:00:00:00 that is DC:C6:22 — 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 BUHEUNG SYSTEM located?

BUHEUNG SYSTEM is listed at 302, 45, Jeonpa-ro, 24 Beongil Anyang-si Gyeonggi-do KR 430-857 in the IEEE OUI registry entry for DC:C6:22. This is the address the organization registered with the IEEE, which may differ from its current operating address.

BUHEUNG SYSTEM

MAC address prefix DC:C6:22 is registered to BUHEUNG SYSTEM in the IEEE OUI registry. Any device whose MAC address begins with DC:C6:22 has a network interface built by BUHEUNG SYSTEM. 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 DC:C6:22:00:00:00 to DC:C6:22:FF:FF:FF.

OUI prefix: DC:C6:22
Hyphen form: DC-C6-22
MAC range: DC:C6:22:00:00:00 – DC:C6:22:FF:FF:FF
Addresses in block: 16,777,216
Organization: BUHEUNG SYSTEM
Address: 302, 45, Jeonpa-ro, 24 Beongil Anyang-si Gyeonggi-do KR 430-857
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 "BUHEUNG SYSTEM"
archived source →
2026-07-17Assigned to "BUHEUNG SYSTEM"

Nearby in the registry

The prefixes assigned immediately before and after DC:C6:22:

FAQ

Which company owns MAC address prefix DC:C6:22?: MAC address prefix DC:C6:22 is registered to BUHEUNG SYSTEM in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with DC:C6:22 has a network interface built by BUHEUNG SYSTEM.
What is the OUI DC:C6:22?: DC:C6:22 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to BUHEUNG SYSTEM. It covers every address from DC:C6:22:00:00:00 to DC:C6:22:FF:FF:FF, or 16,777,216 addresses in total. It is also written DC-C6-22.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in DC:C6:22:00:00:00 that is DC:C6:22 — 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 BUHEUNG SYSTEM located?: BUHEUNG SYSTEM is listed at 302, 45, Jeonpa-ro, 24 Beongil Anyang-si Gyeonggi-do KR 430-857 in the IEEE OUI registry entry for DC:C6:22. This is the address the organization registered with the IEEE, which may differ from its current operating address.