Which company owns MAC address prefix B4:94:4E?

MAC address prefix B4:94:4E is registered to WeTelecom Co., Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with B4:94:4E has a network interface built by WeTelecom Co., Ltd..

What is the OUI B4:94:4E?

B4:94:4E is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to WeTelecom Co., Ltd.. It covers every address from B4:94:4E:00:00:00 to B4:94:4E:FF:FF:FF, or 16,777,216 addresses in total. It is also written B4-94-4E.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in B4:94:4E:00:00:00 that is B4:94:4E — 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 WeTelecom Co., Ltd. located?

WeTelecom Co., Ltd. is listed at The'O Plus #915 Gunpo-si Kyunggi-do KR 435-805 in the IEEE OUI registry entry for B4:94:4E. This is the address the organization registered with the IEEE, which may differ from its current operating address.

WeTelecom Co., Ltd.

MAC address prefix B4:94:4E is registered to WeTelecom Co., Ltd. in the IEEE OUI registry. Any device whose MAC address begins with B4:94:4E has a network interface built by WeTelecom 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 B4:94:4E:00:00:00 to B4:94:4E:FF:FF:FF.

OUI prefix: B4:94:4E
Hyphen form: B4-94-4E
MAC range: B4:94:4E:00:00:00 – B4:94:4E:FF:FF:FF
Addresses in block: 16,777,216
Organization: WeTelecom Co., Ltd.
Address: The'O Plus #915 Gunpo-si Kyunggi-do KR 435-805
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 "WeTelecom Co., Ltd."
archived source →
2026-07-17Assigned to "WeTelecom Co., Ltd."

Nearby in the registry

The prefixes assigned immediately before and after B4:94:4E:

FAQ

Which company owns MAC address prefix B4:94:4E?: MAC address prefix B4:94:4E is registered to WeTelecom Co., Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with B4:94:4E has a network interface built by WeTelecom Co., Ltd..
What is the OUI B4:94:4E?: B4:94:4E is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to WeTelecom Co., Ltd.. It covers every address from B4:94:4E:00:00:00 to B4:94:4E:FF:FF:FF, or 16,777,216 addresses in total. It is also written B4-94-4E.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in B4:94:4E:00:00:00 that is B4:94:4E — 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 WeTelecom Co., Ltd. located?: WeTelecom Co., Ltd. is listed at The'O Plus #915 Gunpo-si Kyunggi-do KR 435-805 in the IEEE OUI registry entry for B4:94:4E. This is the address the organization registered with the IEEE, which may differ from its current operating address.