Which company owns MAC address prefix 5C:24:43?

MAC address prefix 5C:24:43 is registered to O-Sung Telecom Co., Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 5C:24:43 has a network interface built by O-Sung Telecom Co., Ltd..

What is the OUI 5C:24:43?

5C:24:43 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to O-Sung Telecom Co., Ltd.. It covers every address from 5C:24:43:00:00:00 to 5C:24:43:FF:FF:FF, or 16,777,216 addresses in total. It is also written 5C-24-43.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 5C:24:43:00:00:00 that is 5C:24:43 — 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 O-Sung Telecom Co., Ltd. located?

O-Sung Telecom Co., Ltd. is listed at 43-9 Pyeongdongro 803-gil , Gwangsan-Gu Gwangju KR 54611 in the IEEE OUI registry entry for 5C:24:43. This is the address the organization registered with the IEEE, which may differ from its current operating address.

O-Sung Telecom Co., Ltd.

MAC address prefix 5C:24:43 is registered to O-Sung Telecom Co., Ltd. in the IEEE OUI registry. Any device whose MAC address begins with 5C:24:43 has a network interface built by O-Sung Telecom 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 5C:24:43:00:00:00 to 5C:24:43:FF:FF:FF.

OUI prefix: 5C:24:43
Hyphen form: 5C-24-43
MAC range: 5C:24:43:00:00:00 – 5C:24:43:FF:FF:FF
Addresses in block: 16,777,216
Organization: O-Sung Telecom Co., Ltd.
Address: 43-9 Pyeongdongro 803-gil , Gwangsan-Gu Gwangju KR 54611
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 "O-Sung Telecom Co., Ltd."
archived source →
2026-07-17Assigned to "O-Sung Telecom Co., Ltd."

Nearby in the registry

The prefixes assigned immediately before and after 5C:24:43:

FAQ

Which company owns MAC address prefix 5C:24:43?: MAC address prefix 5C:24:43 is registered to O-Sung Telecom Co., Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 5C:24:43 has a network interface built by O-Sung Telecom Co., Ltd..
What is the OUI 5C:24:43?: 5C:24:43 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to O-Sung Telecom Co., Ltd.. It covers every address from 5C:24:43:00:00:00 to 5C:24:43:FF:FF:FF, or 16,777,216 addresses in total. It is also written 5C-24-43.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 5C:24:43:00:00:00 that is 5C:24:43 — 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 O-Sung Telecom Co., Ltd. located?: O-Sung Telecom Co., Ltd. is listed at 43-9 Pyeongdongro 803-gil , Gwangsan-Gu Gwangju KR 54611 in the IEEE OUI registry entry for 5C:24:43. This is the address the organization registered with the IEEE, which may differ from its current operating address.