Which company owns MAC address prefix 24:8A:B3?

MAC address prefix 24:8A:B3 is registered to ICTK Co., Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 24:8A:B3 has a network interface built by ICTK Co., Ltd..

What is the OUI 24:8A:B3?

24:8A:B3 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to ICTK Co., Ltd.. It covers every address from 24:8A:B3:00:00:00 to 24:8A:B3:FF:FF:FF, or 16,777,216 addresses in total. It is also written 24-8A-B3.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 24:8A:B3:00:00:00 that is 24:8A:B3 — 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 ICTK Co., Ltd. located?

ICTK Co., Ltd. is listed at 13F, JACE Tower, 16, Gangnam-daero 84-gil, Gangnam-gu Seoul Select State KR 06241 in the IEEE OUI registry entry for 24:8A:B3. This is the address the organization registered with the IEEE, which may differ from its current operating address.

ICTK Co., Ltd.

MAC address prefix 24:8A:B3 is registered to ICTK Co., Ltd. in the IEEE OUI registry. Any device whose MAC address begins with 24:8A:B3 has a network interface built by ICTK 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 24:8A:B3:00:00:00 to 24:8A:B3:FF:FF:FF.

OUI prefix: 24:8A:B3
Hyphen form: 24-8A-B3
MAC range: 24:8A:B3:00:00:00 – 24:8A:B3:FF:FF:FF
Addresses in block: 16,777,216
Organization: ICTK Co., Ltd.
Address: 13F, JACE Tower, 16, Gangnam-daero 84-gil, Gangnam-gu Seoul Select State KR 06241
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.

2026-02-17Assigned to "ICTK Co., Ltd."
archived source →
2026-07-17Assigned to "ICTK Co., Ltd."

Nearby in the registry

The prefixes assigned immediately before and after 24:8A:B3:

FAQ

Which company owns MAC address prefix 24:8A:B3?: MAC address prefix 24:8A:B3 is registered to ICTK Co., Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 24:8A:B3 has a network interface built by ICTK Co., Ltd..
What is the OUI 24:8A:B3?: 24:8A:B3 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to ICTK Co., Ltd.. It covers every address from 24:8A:B3:00:00:00 to 24:8A:B3:FF:FF:FF, or 16,777,216 addresses in total. It is also written 24-8A-B3.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 24:8A:B3:00:00:00 that is 24:8A:B3 — 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 ICTK Co., Ltd. located?: ICTK Co., Ltd. is listed at 13F, JACE Tower, 16, Gangnam-daero 84-gil, Gangnam-gu Seoul Select State KR 06241 in the IEEE OUI registry entry for 24:8A:B3. This is the address the organization registered with the IEEE, which may differ from its current operating address.