Which company owns MAC address prefix FC:7D:6C?

MAC address prefix FC:7D:6C is registered to HYESUNG TECHWIN Co., Ltd in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with FC:7D:6C has a network interface built by HYESUNG TECHWIN Co., Ltd.

What is the OUI FC:7D:6C?

FC:7D:6C is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to HYESUNG TECHWIN Co., Ltd. It covers every address from FC:7D:6C:00:00:00 to FC:7D:6C:FF:FF:FF, or 16,777,216 addresses in total. It is also written FC-7D-6C.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in FC:7D:6C:00:00:00 that is FC:7D:6C — 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 HYESUNG TECHWIN Co., Ltd located?

HYESUNG TECHWIN Co., Ltd is listed at #1509,545,Dunchon-daero, Jungwon-gu Seongnam Gyeonggi-do KR 13215 in the IEEE OUI registry entry for FC:7D:6C. This is the address the organization registered with the IEEE, which may differ from its current operating address.

HYESUNG TECHWIN Co., Ltd

MAC address prefix FC:7D:6C is registered to HYESUNG TECHWIN Co., Ltd in the IEEE OUI registry. Any device whose MAC address begins with FC:7D:6C has a network interface built by HYESUNG TECHWIN 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 FC:7D:6C:00:00:00 to FC:7D:6C:FF:FF:FF.

OUI prefix: FC:7D:6C
Hyphen form: FC-7D-6C
MAC range: FC:7D:6C:00:00:00 – FC:7D:6C:FF:FF:FF
Addresses in block: 16,777,216
Organization: HYESUNG TECHWIN Co., Ltd
Address: #1509,545,Dunchon-daero, Jungwon-gu Seongnam Gyeonggi-do KR 13215
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.

2019-07-04Assigned to "HYESUNG TECHWIN Co., Ltd"
archived source →
2026-07-17Assigned to "HYESUNG TECHWIN Co., Ltd"

Nearby in the registry

The prefixes assigned immediately before and after FC:7D:6C:

FAQ

Which company owns MAC address prefix FC:7D:6C?: MAC address prefix FC:7D:6C is registered to HYESUNG TECHWIN Co., Ltd in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with FC:7D:6C has a network interface built by HYESUNG TECHWIN Co., Ltd.
What is the OUI FC:7D:6C?: FC:7D:6C is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to HYESUNG TECHWIN Co., Ltd. It covers every address from FC:7D:6C:00:00:00 to FC:7D:6C:FF:FF:FF, or 16,777,216 addresses in total. It is also written FC-7D-6C.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in FC:7D:6C:00:00:00 that is FC:7D:6C — 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 HYESUNG TECHWIN Co., Ltd located?: HYESUNG TECHWIN Co., Ltd is listed at #1509,545,Dunchon-daero, Jungwon-gu Seongnam Gyeonggi-do KR 13215 in the IEEE OUI registry entry for FC:7D:6C. This is the address the organization registered with the IEEE, which may differ from its current operating address.