Which company owns MAC address prefix C8:7C:BC?

MAC address prefix C8:7C:BC is registered to Valink Co., Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with C8:7C:BC has a network interface built by Valink Co., Ltd..

What is the OUI C8:7C:BC?

C8:7C:BC is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Valink Co., Ltd.. It covers every address from C8:7C:BC:00:00:00 to C8:7C:BC:FF:FF:FF, or 16,777,216 addresses in total. It is also written C8-7C-BC.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in C8:7C:BC:00:00:00 that is C8:7C:BC — 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 Valink Co., Ltd. located?

Valink Co., Ltd. is listed at 1F Dongwon Bldg. 90, Dangsan-Dong 3-Ga Youngdungpo-Gu Seoul KR 150-803 in the IEEE OUI registry entry for C8:7C:BC. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Valink Co., Ltd.

MAC address prefix C8:7C:BC is registered to Valink Co., Ltd. in the IEEE OUI registry. Any device whose MAC address begins with C8:7C:BC has a network interface built by Valink 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 C8:7C:BC:00:00:00 to C8:7C:BC:FF:FF:FF.

OUI prefix: C8:7C:BC
Hyphen form: C8-7C-BC
MAC range: C8:7C:BC:00:00:00 – C8:7C:BC:FF:FF:FF
Addresses in block: 16,777,216
Organization: Valink Co., Ltd.
Address: 1F Dongwon Bldg. 90, Dangsan-Dong 3-Ga Youngdungpo-Gu Seoul KR 150-803
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 "Valink Co., Ltd."
archived source →
2026-07-17Assigned to "Valink Co., Ltd."

Nearby in the registry

The prefixes assigned immediately before and after C8:7C:BC:

FAQ

Which company owns MAC address prefix C8:7C:BC?: MAC address prefix C8:7C:BC is registered to Valink Co., Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with C8:7C:BC has a network interface built by Valink Co., Ltd..
What is the OUI C8:7C:BC?: C8:7C:BC is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Valink Co., Ltd.. It covers every address from C8:7C:BC:00:00:00 to C8:7C:BC:FF:FF:FF, or 16,777,216 addresses in total. It is also written C8-7C-BC.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in C8:7C:BC:00:00:00 that is C8:7C:BC — 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 Valink Co., Ltd. located?: Valink Co., Ltd. is listed at 1F Dongwon Bldg. 90, Dangsan-Dong 3-Ga Youngdungpo-Gu Seoul KR 150-803 in the IEEE OUI registry entry for C8:7C:BC. This is the address the organization registered with the IEEE, which may differ from its current operating address.