Which company owns MAC address prefix 04:E5:6E?

MAC address prefix 04:E5:6E is registered to THUB Co., ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 04:E5:6E has a network interface built by THUB Co., ltd..

What is the OUI 04:E5:6E?

04:E5:6E is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to THUB Co., ltd.. It covers every address from 04:E5:6E:00:00:00 to 04:E5:6E:FF:FF:FF, or 16,777,216 addresses in total. It is also written 04-E5-6E.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 04:E5:6E:00:00:00 that is 04:E5:6E — 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 THUB Co., ltd. located?

THUB Co., ltd. is listed at #607 2, Busandaehak-ro 63beon-gil, Geumjeong-gu Busan KR 46241 in the IEEE OUI registry entry for 04:E5:6E. This is the address the organization registered with the IEEE, which may differ from its current operating address.

THUB Co., ltd.

MAC address prefix 04:E5:6E is registered to THUB Co., ltd. in the IEEE OUI registry. Any device whose MAC address begins with 04:E5:6E has a network interface built by THUB 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 04:E5:6E:00:00:00 to 04:E5:6E:FF:FF:FF.

OUI prefix: 04:E5:6E
Hyphen form: 04-E5-6E
MAC range: 04:E5:6E:00:00:00 – 04:E5:6E:FF:FF:FF
Addresses in block: 16,777,216
Organization: THUB Co., ltd.
Address: #607 2, Busandaehak-ro 63beon-gil, Geumjeong-gu Busan KR 46241
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 "THUB Co., ltd."
archived source →
2026-07-17Assigned to "THUB Co., ltd."

Nearby in the registry

The prefixes assigned immediately before and after 04:E5:6E:

FAQ

Which company owns MAC address prefix 04:E5:6E?: MAC address prefix 04:E5:6E is registered to THUB Co., ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 04:E5:6E has a network interface built by THUB Co., ltd..
What is the OUI 04:E5:6E?: 04:E5:6E is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to THUB Co., ltd.. It covers every address from 04:E5:6E:00:00:00 to 04:E5:6E:FF:FF:FF, or 16,777,216 addresses in total. It is also written 04-E5-6E.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 04:E5:6E:00:00:00 that is 04:E5:6E — 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 THUB Co., ltd. located?: THUB Co., ltd. is listed at #607 2, Busandaehak-ro 63beon-gil, Geumjeong-gu Busan KR 46241 in the IEEE OUI registry entry for 04:E5:6E. This is the address the organization registered with the IEEE, which may differ from its current operating address.