Which company owns MAC address prefix 50:2B:98?

MAC address prefix 50:2B:98 is registered to Es-tech International in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 50:2B:98 has a network interface built by Es-tech International.

What is the OUI 50:2B:98?

50:2B:98 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Es-tech International. It covers every address from 50:2B:98:00:00:00 to 50:2B:98:FF:FF:FF, or 16,777,216 addresses in total. It is also written 50-2B-98.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 50:2B:98:00:00:00 that is 50:2B: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 Es-tech International located?

Es-tech International is listed at 228-70, Saneop-ro 155beon-gil, Gwonseon-gu, Suwon-si, Gyeonggi-do, Korea Suwon KR 16648 in the IEEE OUI registry entry for 50:2B:98. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Es-tech International

MAC address prefix 50:2B:98 is registered to Es-tech International in the IEEE OUI registry. Any device whose MAC address begins with 50:2B:98 has a network interface built by Es-tech International. 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 50:2B:98:00:00:00 to 50:2B:98:FF:FF:FF.

OUI prefix: 50:2B:98
Hyphen form: 50-2B-98
MAC range: 50:2B:98:00:00:00 – 50:2B:98:FF:FF:FF
Addresses in block: 16,777,216
Organization: Es-tech International
Address: 228-70, Saneop-ro 155beon-gil, Gwonseon-gu, Suwon-si, Gyeonggi-do, Korea Suwon KR 16648
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.

2018-12-21Assigned to "Es-tech International"
archived source →
2026-07-17Assigned to "Es-tech International"

Nearby in the registry

The prefixes assigned immediately before and after 50:2B:98:

FAQ

Which company owns MAC address prefix 50:2B:98?: MAC address prefix 50:2B:98 is registered to Es-tech International in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 50:2B:98 has a network interface built by Es-tech International.
What is the OUI 50:2B:98?: 50:2B:98 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Es-tech International. It covers every address from 50:2B:98:00:00:00 to 50:2B:98:FF:FF:FF, or 16,777,216 addresses in total. It is also written 50-2B-98.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 50:2B:98:00:00:00 that is 50:2B: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 Es-tech International located?: Es-tech International is listed at 228-70, Saneop-ro 155beon-gil, Gwonseon-gu, Suwon-si, Gyeonggi-do, Korea Suwon KR 16648 in the IEEE OUI registry entry for 50:2B:98. This is the address the organization registered with the IEEE, which may differ from its current operating address.