Which company owns MAC address prefix 04:EE:EE?

MAC address prefix 04:EE:EE is registered to Laplace System Co., Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 04:EE:EE has a network interface built by Laplace System Co., Ltd..

What is the OUI 04:EE:EE?

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

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 04:EE:EE:00:00:00 that is 04:EE:EE — 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 Laplace System Co., Ltd. located?

Laplace System Co., Ltd. is listed at 1-245 Kyo-machi Fushimi, Kyoto Kyoto JP 6128083 in the IEEE OUI registry entry for 04:EE:EE. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Laplace System Co., Ltd.

MAC address prefix 04:EE:EE is registered to Laplace System Co., Ltd. in the IEEE OUI registry. Any device whose MAC address begins with 04:EE:EE has a network interface built by Laplace System 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:EE:EE:00:00:00 to 04:EE:EE:FF:FF:FF.

OUI prefix: 04:EE:EE
Hyphen form: 04-EE-EE
MAC range: 04:EE:EE:00:00:00 – 04:EE:EE:FF:FF:FF
Addresses in block: 16,777,216
Organization: Laplace System Co., Ltd.
Address: 1-245 Kyo-machi Fushimi, Kyoto Kyoto JP 6128083
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 (1)

The IEEE registry publishes current state only — this is the change record we've kept since we started tracking it daily.

2026-07-17Assigned to "Laplace System Co., Ltd."

Nearby in the registry

The prefixes assigned immediately before and after 04:EE:EE:

FAQ

Which company owns MAC address prefix 04:EE:EE?: MAC address prefix 04:EE:EE is registered to Laplace System Co., Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 04:EE:EE has a network interface built by Laplace System Co., Ltd..
What is the OUI 04:EE:EE?: 04:EE:EE is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Laplace System Co., Ltd.. It covers every address from 04:EE:EE:00:00:00 to 04:EE:EE:FF:FF:FF, or 16,777,216 addresses in total. It is also written 04-EE-EE.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 04:EE:EE:00:00:00 that is 04:EE:EE — 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 Laplace System Co., Ltd. located?: Laplace System Co., Ltd. is listed at 1-245 Kyo-machi Fushimi, Kyoto Kyoto JP 6128083 in the IEEE OUI registry entry for 04:EE:EE. This is the address the organization registered with the IEEE, which may differ from its current operating address.