Which company owns MAC address prefix 3C:4E:47?

MAC address prefix 3C:4E:47 is registered to Etronic A/S in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 3C:4E:47 has a network interface built by Etronic A/S.

What is the OUI 3C:4E:47?

3C:4E:47 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Etronic A/S. It covers every address from 3C:4E:47:00:00:00 to 3C:4E:47:FF:FF:FF, or 16,777,216 addresses in total. It is also written 3C-4E-47.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 3C:4E:47:00:00:00 that is 3C:4E:47 — 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 Etronic A/S located?

Etronic A/S is listed at Rødeledsvej 95 Svendborg South Denmark DK 5700 in the IEEE OUI registry entry for 3C:4E:47. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Etronic A/S

MAC address prefix 3C:4E:47 is registered to Etronic A/S in the IEEE OUI registry. Any device whose MAC address begins with 3C:4E:47 has a network interface built by Etronic A/S. 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 3C:4E:47:00:00:00 to 3C:4E:47:FF:FF:FF.

OUI prefix: 3C:4E:47
Hyphen form: 3C-4E-47
MAC range: 3C:4E:47:00:00:00 – 3C:4E:47:FF:FF:FF
Addresses in block: 16,777,216
Organization: Etronic A/S
Address: Rødeledsvej 95 Svendborg South Denmark DK 5700
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 "Etronic A/S"
archived source →
2026-07-17Assigned to "Etronic A/S"

Nearby in the registry

The prefixes assigned immediately before and after 3C:4E:47:

FAQ

Which company owns MAC address prefix 3C:4E:47?: MAC address prefix 3C:4E:47 is registered to Etronic A/S in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 3C:4E:47 has a network interface built by Etronic A/S.
What is the OUI 3C:4E:47?: 3C:4E:47 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Etronic A/S. It covers every address from 3C:4E:47:00:00:00 to 3C:4E:47:FF:FF:FF, or 16,777,216 addresses in total. It is also written 3C-4E-47.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 3C:4E:47:00:00:00 that is 3C:4E:47 — 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 Etronic A/S located?: Etronic A/S is listed at Rødeledsvej 95 Svendborg South Denmark DK 5700 in the IEEE OUI registry entry for 3C:4E:47. This is the address the organization registered with the IEEE, which may differ from its current operating address.