Which company owns MAC address prefix EC:43:E6?

MAC address prefix EC:43:E6 is registered to AWCER Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with EC:43:E6 has a network interface built by AWCER Ltd..

What is the OUI EC:43:E6?

EC:43:E6 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to AWCER Ltd.. It covers every address from EC:43:E6:00:00:00 to EC:43:E6:FF:FF:FF, or 16,777,216 addresses in total. It is also written EC-43-E6.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in EC:43:E6:00:00:00 that is EC:43:E6 — 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 AWCER Ltd. located?

AWCER Ltd. is listed at 100-413 Bucheon Technopark Bucheon-city Gyeonggi-do KR 421-741 in the IEEE OUI registry entry for EC:43:E6. This is the address the organization registered with the IEEE, which may differ from its current operating address.

AWCER Ltd.

MAC address prefix EC:43:E6 is registered to AWCER Ltd. in the IEEE OUI registry. Any device whose MAC address begins with EC:43:E6 has a network interface built by AWCER 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 EC:43:E6:00:00:00 to EC:43:E6:FF:FF:FF.

OUI prefix: EC:43:E6
Hyphen form: EC-43-E6
MAC range: EC:43:E6:00:00:00 – EC:43:E6:FF:FF:FF
Addresses in block: 16,777,216
Organization: AWCER Ltd.
Address: 100-413 Bucheon Technopark Bucheon-city Gyeonggi-do KR 421-741
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 "AWCER Ltd."
archived source →
2026-07-17Assigned to "AWCER Ltd."

Nearby in the registry

The prefixes assigned immediately before and after EC:43:E6:

FAQ

Which company owns MAC address prefix EC:43:E6?: MAC address prefix EC:43:E6 is registered to AWCER Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with EC:43:E6 has a network interface built by AWCER Ltd..
What is the OUI EC:43:E6?: EC:43:E6 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to AWCER Ltd.. It covers every address from EC:43:E6:00:00:00 to EC:43:E6:FF:FF:FF, or 16,777,216 addresses in total. It is also written EC-43-E6.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in EC:43:E6:00:00:00 that is EC:43:E6 — 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 AWCER Ltd. located?: AWCER Ltd. is listed at 100-413 Bucheon Technopark Bucheon-city Gyeonggi-do KR 421-741 in the IEEE OUI registry entry for EC:43:E6. This is the address the organization registered with the IEEE, which may differ from its current operating address.