Which company owns MAC address prefix D8:DE:CE?

MAC address prefix D8:DE:CE is registered to ISUNG CO.,LTD in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with D8:DE:CE has a network interface built by ISUNG CO.,LTD.

What is the OUI D8:DE:CE?

D8:DE:CE is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to ISUNG CO.,LTD. It covers every address from D8:DE:CE:00:00:00 to D8:DE:CE:FF:FF:FF, or 16,777,216 addresses in total. It is also written D8-DE-CE.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in D8:DE:CE:00:00:00 that is D8:DE:CE — 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 ISUNG CO.,LTD located?

ISUNG CO.,LTD is listed at 92, Huimanggongwon-ro Siheung-si Kyunggido KR 429-859 in the IEEE OUI registry entry for D8:DE:CE. This is the address the organization registered with the IEEE, which may differ from its current operating address.

ISUNG CO.,LTD

MAC address prefix D8:DE:CE is registered to ISUNG CO.,LTD in the IEEE OUI registry. Any device whose MAC address begins with D8:DE:CE has a network interface built by ISUNG 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 D8:DE:CE:00:00:00 to D8:DE:CE:FF:FF:FF.

OUI prefix: D8:DE:CE
Hyphen form: D8-DE-CE
MAC range: D8:DE:CE:00:00:00 – D8:DE:CE:FF:FF:FF
Addresses in block: 16,777,216
Organization: ISUNG CO.,LTD
Address: 92, Huimanggongwon-ro Siheung-si Kyunggido KR 429-859
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 "ISUNG CO.,LTD"
archived source →
2026-07-17Assigned to "ISUNG CO.,LTD"

Nearby in the registry

The prefixes assigned immediately before and after D8:DE:CE:

FAQ

Which company owns MAC address prefix D8:DE:CE?: MAC address prefix D8:DE:CE is registered to ISUNG CO.,LTD in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with D8:DE:CE has a network interface built by ISUNG CO.,LTD.
What is the OUI D8:DE:CE?: D8:DE:CE is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to ISUNG CO.,LTD. It covers every address from D8:DE:CE:00:00:00 to D8:DE:CE:FF:FF:FF, or 16,777,216 addresses in total. It is also written D8-DE-CE.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in D8:DE:CE:00:00:00 that is D8:DE:CE — 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 ISUNG CO.,LTD located?: ISUNG CO.,LTD is listed at 92, Huimanggongwon-ro Siheung-si Kyunggido KR 429-859 in the IEEE OUI registry entry for D8:DE:CE. This is the address the organization registered with the IEEE, which may differ from its current operating address.