Which company owns MAC address prefix 18:2D:98?

MAC address prefix 18:2D:98 is registered to Jinwoo Industrial system in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 18:2D:98 has a network interface built by Jinwoo Industrial system.

What is the OUI 18:2D:98?

18:2D:98 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Jinwoo Industrial system. It covers every address from 18:2D:98:00:00:00 to 18:2D:98:FF:FF:FF, or 16,777,216 addresses in total. It is also written 18-2D-98.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 18:2D:98:00:00:00 that is 18:2D:98 — 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 Jinwoo Industrial system located?

Jinwoo Industrial system is listed at 7F,Jinwoo Building,149 dosan-daero seoul gangnamgu KR 06036 in the IEEE OUI registry entry for 18:2D:98. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Jinwoo Industrial system

MAC address prefix 18:2D:98 is registered to Jinwoo Industrial system in the IEEE OUI registry. Any device whose MAC address begins with 18:2D:98 has a network interface built by Jinwoo Industrial system. 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 18:2D:98:00:00:00 to 18:2D:98:FF:FF:FF.

OUI prefix: 18:2D:98
Hyphen form: 18-2D-98
MAC range: 18:2D:98:00:00:00 – 18:2D:98:FF:FF:FF
Addresses in block: 16,777,216
Organization: Jinwoo Industrial system
Address: 7F,Jinwoo Building,149 dosan-daero seoul gangnamgu KR 06036
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.

2017-09-08Assigned to "Jinwoo Industrial system"
archived source →
2026-07-17Assigned to "Jinwoo Industrial system"

Nearby in the registry

The prefixes assigned immediately before and after 18:2D:98:

FAQ

Which company owns MAC address prefix 18:2D:98?: MAC address prefix 18:2D:98 is registered to Jinwoo Industrial system in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 18:2D:98 has a network interface built by Jinwoo Industrial system.
What is the OUI 18:2D:98?: 18:2D:98 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Jinwoo Industrial system. It covers every address from 18:2D:98:00:00:00 to 18:2D:98:FF:FF:FF, or 16,777,216 addresses in total. It is also written 18-2D-98.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 18:2D:98:00:00:00 that is 18:2D:98 — 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 Jinwoo Industrial system located?: Jinwoo Industrial system is listed at 7F,Jinwoo Building,149 dosan-daero seoul gangnamgu KR 06036 in the IEEE OUI registry entry for 18:2D:98. This is the address the organization registered with the IEEE, which may differ from its current operating address.