Which company owns MAC address prefix A0:4E:01?

MAC address prefix A0:4E:01 is registered to CENTRAL ENGINEERING co.,ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with A0:4E:01 has a network interface built by CENTRAL ENGINEERING co.,ltd..

What is the OUI A0:4E:01?

A0:4E:01 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to CENTRAL ENGINEERING co.,ltd.. It covers every address from A0:4E:01:00:00:00 to A0:4E:01:FF:FF:FF, or 16,777,216 addresses in total. It is also written A0-4E-01.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in A0:4E:01:00:00:00 that is A0:4E:01 — 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 CENTRAL ENGINEERING co.,ltd. located?

CENTRAL ENGINEERING co.,ltd. is listed at 2-3-19 shinyokohama kouhoku-ku yokohama-shi kanagawa JP 222-0033 in the IEEE OUI registry entry for A0:4E:01. This is the address the organization registered with the IEEE, which may differ from its current operating address.

CENTRAL ENGINEERING co.,ltd.

MAC address prefix A0:4E:01 is registered to CENTRAL ENGINEERING co.,ltd. in the IEEE OUI registry. Any device whose MAC address begins with A0:4E:01 has a network interface built by CENTRAL ENGINEERING 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 A0:4E:01:00:00:00 to A0:4E:01:FF:FF:FF.

OUI prefix: A0:4E:01
Hyphen form: A0-4E-01
MAC range: A0:4E:01:00:00:00 – A0:4E:01:FF:FF:FF
Addresses in block: 16,777,216
Organization: CENTRAL ENGINEERING co.,ltd.
Address: 2-3-19 shinyokohama kouhoku-ku yokohama-shi kanagawa JP 222-0033
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 "CENTRAL ENGINEERING co.,ltd."
archived source →
2026-07-17Assigned to "CENTRAL ENGINEERING co.,ltd."

Nearby in the registry

The prefixes assigned immediately before and after A0:4E:01:

FAQ

Which company owns MAC address prefix A0:4E:01?: MAC address prefix A0:4E:01 is registered to CENTRAL ENGINEERING co.,ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with A0:4E:01 has a network interface built by CENTRAL ENGINEERING co.,ltd..
What is the OUI A0:4E:01?: A0:4E:01 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to CENTRAL ENGINEERING co.,ltd.. It covers every address from A0:4E:01:00:00:00 to A0:4E:01:FF:FF:FF, or 16,777,216 addresses in total. It is also written A0-4E-01.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in A0:4E:01:00:00:00 that is A0:4E:01 — 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 CENTRAL ENGINEERING co.,ltd. located?: CENTRAL ENGINEERING co.,ltd. is listed at 2-3-19 shinyokohama kouhoku-ku yokohama-shi kanagawa JP 222-0033 in the IEEE OUI registry entry for A0:4E:01. This is the address the organization registered with the IEEE, which may differ from its current operating address.