Which company owns MAC address prefix DC:F5:6E?

MAC address prefix DC:F5:6E is registered to Wellysis Corp. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with DC:F5:6E has a network interface built by Wellysis Corp..

What is the OUI DC:F5:6E?

DC:F5:6E is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Wellysis Corp.. It covers every address from DC:F5:6E:00:00:00 to DC:F5:6E:FF:FF:FF, or 16,777,216 addresses in total. It is also written DC-F5-6E.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in DC:F5:6E:00:00:00 that is DC:F5:6E — 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 Wellysis Corp. located?

Wellysis Corp. is listed at 311 Gangnam-daero Seocho-gu Seoul KR 06628 in the IEEE OUI registry entry for DC:F5:6E. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Wellysis Corp.

MAC address prefix DC:F5:6E is registered to Wellysis Corp. in the IEEE OUI registry. Any device whose MAC address begins with DC:F5:6E has a network interface built by Wellysis Corp.. 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:F5:6E:00:00:00 to DC:F5:6E:FF:FF:FF.

OUI prefix: DC:F5:6E
Hyphen form: DC-F5-6E
MAC range: DC:F5:6E:00:00:00 – DC:F5:6E:FF:FF:FF
Addresses in block: 16,777,216
Organization: Wellysis Corp.
Address: 311 Gangnam-daero Seocho-gu Seoul KR 06628
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.

2021-06-10Assigned to "Wellysis Corp."
archived source →
2026-07-17Assigned to "Wellysis Corp."

Nearby in the registry

The prefixes assigned immediately before and after DC:F5:6E:

FAQ

Which company owns MAC address prefix DC:F5:6E?: MAC address prefix DC:F5:6E is registered to Wellysis Corp. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with DC:F5:6E has a network interface built by Wellysis Corp..
What is the OUI DC:F5:6E?: DC:F5:6E is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Wellysis Corp.. It covers every address from DC:F5:6E:00:00:00 to DC:F5:6E:FF:FF:FF, or 16,777,216 addresses in total. It is also written DC-F5-6E.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in DC:F5:6E:00:00:00 that is DC:F5:6E — 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 Wellysis Corp. located?: Wellysis Corp. is listed at 311 Gangnam-daero Seocho-gu Seoul KR 06628 in the IEEE OUI registry entry for DC:F5:6E. This is the address the organization registered with the IEEE, which may differ from its current operating address.