Which company owns MAC address prefix FC:E1:86?

MAC address prefix FC:E1:86 is registered to A3M Co., LTD in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with FC:E1:86 has a network interface built by A3M Co., LTD.

What is the OUI FC:E1:86?

FC:E1:86 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to A3M Co., LTD. It covers every address from FC:E1:86:00:00:00 to FC:E1:86:FF:FF:FF, or 16,777,216 addresses in total. It is also written FC-E1-86.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in FC:E1:86:00:00:00 that is FC:E1:86 — 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 A3M Co., LTD located?

A3M Co., LTD is listed at KeumJeong Highview 2F #205, Gunpo Gyeonggi KR 435-845 in the IEEE OUI registry entry for FC:E1:86. This is the address the organization registered with the IEEE, which may differ from its current operating address.

A3M Co., LTD

MAC address prefix FC:E1:86 is registered to A3M Co., LTD in the IEEE OUI registry. Any device whose MAC address begins with FC:E1:86 has a network interface built by A3M 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 FC:E1:86:00:00:00 to FC:E1:86:FF:FF:FF.

OUI prefix: FC:E1:86
Hyphen form: FC-E1-86
MAC range: FC:E1:86:00:00:00 – FC:E1:86:FF:FF:FF
Addresses in block: 16,777,216
Organization: A3M Co., LTD
Address: KeumJeong Highview 2F #205, Gunpo Gyeonggi KR 435-845
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 "A3M Co., LTD"
archived source →
2026-07-17Assigned to "A3M Co., LTD"

Nearby in the registry

The prefixes assigned immediately before and after FC:E1:86:

FAQ

Which company owns MAC address prefix FC:E1:86?: MAC address prefix FC:E1:86 is registered to A3M Co., LTD in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with FC:E1:86 has a network interface built by A3M Co., LTD.
What is the OUI FC:E1:86?: FC:E1:86 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to A3M Co., LTD. It covers every address from FC:E1:86:00:00:00 to FC:E1:86:FF:FF:FF, or 16,777,216 addresses in total. It is also written FC-E1-86.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in FC:E1:86:00:00:00 that is FC:E1:86 — 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 A3M Co., LTD located?: A3M Co., LTD is listed at KeumJeong Highview 2F #205, Gunpo Gyeonggi KR 435-845 in the IEEE OUI registry entry for FC:E1:86. This is the address the organization registered with the IEEE, which may differ from its current operating address.