Which company owns MAC address prefix B4:DF:FA?

MAC address prefix B4:DF:FA is registered to Litemax Electronics Inc. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with B4:DF:FA has a network interface built by Litemax Electronics Inc..

What is the OUI B4:DF:FA?

B4:DF:FA is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Litemax Electronics Inc.. It covers every address from B4:DF:FA:00:00:00 to B4:DF:FA:FF:FF:FF, or 16,777,216 addresses in total. It is also written B4-DF-FA.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in B4:DF:FA:00:00:00 that is B4:DF:FA — 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 Litemax Electronics Inc. located?

Litemax Electronics Inc. is listed at 8F, No.137,Lane 235 Shin-dian-Dist New Taipei TW 23145 in the IEEE OUI registry entry for B4:DF:FA. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Litemax Electronics Inc.

MAC address prefix B4:DF:FA is registered to Litemax Electronics Inc. in the IEEE OUI registry. Any device whose MAC address begins with B4:DF:FA has a network interface built by Litemax Electronics Inc.. 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:DF:FA:00:00:00 to B4:DF:FA:FF:FF:FF.

OUI prefix: B4:DF:FA
Hyphen form: B4-DF-FA
MAC range: B4:DF:FA:00:00:00 – B4:DF:FA:FF:FF:FF
Addresses in block: 16,777,216
Organization: Litemax Electronics Inc.
Address: 8F, No.137,Lane 235 Shin-dian-Dist New Taipei TW 23145
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 "Litemax Electronics Inc."
archived source →
2026-07-17Assigned to "Litemax Electronics Inc."

Nearby in the registry

The prefixes assigned immediately before and after B4:DF:FA:

FAQ

Which company owns MAC address prefix B4:DF:FA?: MAC address prefix B4:DF:FA is registered to Litemax Electronics Inc. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with B4:DF:FA has a network interface built by Litemax Electronics Inc..
What is the OUI B4:DF:FA?: B4:DF:FA is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Litemax Electronics Inc.. It covers every address from B4:DF:FA:00:00:00 to B4:DF:FA:FF:FF:FF, or 16,777,216 addresses in total. It is also written B4-DF-FA.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in B4:DF:FA:00:00:00 that is B4:DF:FA — 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 Litemax Electronics Inc. located?: Litemax Electronics Inc. is listed at 8F, No.137,Lane 235 Shin-dian-Dist New Taipei TW 23145 in the IEEE OUI registry entry for B4:DF:FA. This is the address the organization registered with the IEEE, which may differ from its current operating address.