Which company owns MAC address prefix 54:05:93?

MAC address prefix 54:05:93 is registered to WOORI ELEC Co.,Ltd in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 54:05:93 has a network interface built by WOORI ELEC Co.,Ltd.

What is the OUI 54:05:93?

54:05:93 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to WOORI ELEC Co.,Ltd. It covers every address from 54:05:93:00:00:00 to 54:05:93:FF:FF:FF, or 16,777,216 addresses in total. It is also written 54-05-93.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 54:05:93:00:00:00 that is 54:05:93 — 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 WOORI ELEC Co.,Ltd located?

WOORI ELEC Co.,Ltd is listed at #1401~03, #1411~12, Bucheon Deawoo Techno Park, D-Dong, 261,Doyak-Ro, Wonmi-Gu,Bucheon-Si Gyeonggi-Do KR 14523 in the IEEE OUI registry entry for 54:05:93. This is the address the organization registered with the IEEE, which may differ from its current operating address.

WOORI ELEC Co.,Ltd

MAC address prefix 54:05:93 is registered to WOORI ELEC Co.,Ltd in the IEEE OUI registry. Any device whose MAC address begins with 54:05:93 has a network interface built by WOORI ELEC 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 54:05:93:00:00:00 to 54:05:93:FF:FF:FF.

OUI prefix: 54:05:93
Hyphen form: 54-05-93
MAC range: 54:05:93:00:00:00 – 54:05:93:FF:FF:FF
Addresses in block: 16,777,216
Organization: WOORI ELEC Co.,Ltd
Address: #1401~03, #1411~12, Bucheon Deawoo Techno Park, D-Dong, 261,Doyak-Ro, Wonmi-Gu,Bucheon-Si Gyeonggi-Do KR 14523
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 "WOORI ELEC Co.,Ltd"
archived source →
2026-07-17Assigned to "WOORI ELEC Co.,Ltd"

Nearby in the registry

The prefixes assigned immediately before and after 54:05:93:

FAQ

Which company owns MAC address prefix 54:05:93?: MAC address prefix 54:05:93 is registered to WOORI ELEC Co.,Ltd in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 54:05:93 has a network interface built by WOORI ELEC Co.,Ltd.
What is the OUI 54:05:93?: 54:05:93 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to WOORI ELEC Co.,Ltd. It covers every address from 54:05:93:00:00:00 to 54:05:93:FF:FF:FF, or 16,777,216 addresses in total. It is also written 54-05-93.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 54:05:93:00:00:00 that is 54:05:93 — 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 WOORI ELEC Co.,Ltd located?: WOORI ELEC Co.,Ltd is listed at #1401~03, #1411~12, Bucheon Deawoo Techno Park, D-Dong, 261,Doyak-Ro, Wonmi-Gu,Bucheon-Si Gyeonggi-Do KR 14523 in the IEEE OUI registry entry for 54:05:93. This is the address the organization registered with the IEEE, which may differ from its current operating address.