Which company owns MAC address prefix EC:2F:20?

MAC address prefix EC:2F:20 is registered to HYUNDAI WIA in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with EC:2F:20 has a network interface built by HYUNDAI WIA.

What is the OUI EC:2F:20?

EC:2F:20 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to HYUNDAI WIA. It covers every address from EC:2F:20:00:00:00 to EC:2F:20:FF:FF:FF, or 16,777,216 addresses in total. It is also written EC-2F-20.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in EC:2F:20:00:00:00 that is EC:2F:20 — 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 HYUNDAI WIA located?

HYUNDAI WIA is listed at 153, Jeongdong-ro, Seongsan-gu Changwon-si Gyeongsangnam-do KR 51533 in the IEEE OUI registry entry for EC:2F:20. This is the address the organization registered with the IEEE, which may differ from its current operating address.

HYUNDAI WIA

MAC address prefix EC:2F:20 is registered to HYUNDAI WIA in the IEEE OUI registry. Any device whose MAC address begins with EC:2F:20 has a network interface built by HYUNDAI WIA. 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:2F:20:00:00:00 to EC:2F:20:FF:FF:FF.

OUI prefix: EC:2F:20
Hyphen form: EC-2F-20
MAC range: EC:2F:20:00:00:00 – EC:2F:20:FF:FF:FF
Addresses in block: 16,777,216
Organization: HYUNDAI WIA
Address: 153, Jeongdong-ro, Seongsan-gu Changwon-si Gyeongsangnam-do KR 51533
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.

2025-05-13Assigned to "HYUNDAI WIA"
archived source →
2026-07-17Assigned to "HYUNDAI WIA"

Nearby in the registry

The prefixes assigned immediately before and after EC:2F:20:

FAQ

Which company owns MAC address prefix EC:2F:20?: MAC address prefix EC:2F:20 is registered to HYUNDAI WIA in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with EC:2F:20 has a network interface built by HYUNDAI WIA.
What is the OUI EC:2F:20?: EC:2F:20 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to HYUNDAI WIA. It covers every address from EC:2F:20:00:00:00 to EC:2F:20:FF:FF:FF, or 16,777,216 addresses in total. It is also written EC-2F-20.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in EC:2F:20:00:00:00 that is EC:2F:20 — 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 HYUNDAI WIA located?: HYUNDAI WIA is listed at 153, Jeongdong-ro, Seongsan-gu Changwon-si Gyeongsangnam-do KR 51533 in the IEEE OUI registry entry for EC:2F:20. This is the address the organization registered with the IEEE, which may differ from its current operating address.