Which company owns MAC address prefix 14:54:12?

MAC address prefix 14:54:12 is registered to Entis Co., Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 14:54:12 has a network interface built by Entis Co., Ltd..

What is the OUI 14:54:12?

14:54:12 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Entis Co., Ltd.. It covers every address from 14:54:12:00:00:00 to 14:54:12:FF:FF:FF, or 16,777,216 addresses in total. It is also written 14-54-12.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 14:54:12:00:00:00 that is 14:54:12 — 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 Entis Co., Ltd. located?

Entis Co., Ltd. is listed at 2-20-6, Hanaoka Bldg, 6F Tokyo JP 1030007 in the IEEE OUI registry entry for 14:54:12. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Entis Co., Ltd.

MAC address prefix 14:54:12 is registered to Entis Co., Ltd. in the IEEE OUI registry. Any device whose MAC address begins with 14:54:12 has a network interface built by Entis 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 14:54:12:00:00:00 to 14:54:12:FF:FF:FF.

OUI prefix: 14:54:12
Hyphen form: 14-54-12
MAC range: 14:54:12:00:00:00 – 14:54:12:FF:FF:FF
Addresses in block: 16,777,216
Organization: Entis Co., Ltd.
Address: 2-20-6, Hanaoka Bldg, 6F Tokyo JP 1030007
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 "Entis Co., Ltd."
archived source →
2026-07-17Assigned to "Entis Co., Ltd."

Nearby in the registry

The prefixes assigned immediately before and after 14:54:12:

FAQ

Which company owns MAC address prefix 14:54:12?: MAC address prefix 14:54:12 is registered to Entis Co., Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 14:54:12 has a network interface built by Entis Co., Ltd..
What is the OUI 14:54:12?: 14:54:12 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Entis Co., Ltd.. It covers every address from 14:54:12:00:00:00 to 14:54:12:FF:FF:FF, or 16,777,216 addresses in total. It is also written 14-54-12.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 14:54:12:00:00:00 that is 14:54:12 — 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 Entis Co., Ltd. located?: Entis Co., Ltd. is listed at 2-20-6, Hanaoka Bldg, 6F Tokyo JP 1030007 in the IEEE OUI registry entry for 14:54:12. This is the address the organization registered with the IEEE, which may differ from its current operating address.