Which company owns MAC address prefix 10:C2:BA?

MAC address prefix 10:C2:BA is registered to UTT Co., Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 10:C2:BA has a network interface built by UTT Co., Ltd..

What is the OUI 10:C2:BA?

10:C2:BA is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to UTT Co., Ltd.. It covers every address from 10:C2:BA:00:00:00 to 10:C2:BA:FF:FF:FF, or 16,777,216 addresses in total. It is also written 10-C2-BA.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 10:C2:BA:00:00:00 that is 10:C2:BA — 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 UTT Co., Ltd. located?

UTT Co., Ltd. is listed at Seoul Korea KR 135-913 in the IEEE OUI registry entry for 10:C2:BA. This is the address the organization registered with the IEEE, which may differ from its current operating address.

UTT Co., Ltd.

MAC address prefix 10:C2:BA is registered to UTT Co., Ltd. in the IEEE OUI registry. Any device whose MAC address begins with 10:C2:BA has a network interface built by UTT 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 10:C2:BA:00:00:00 to 10:C2:BA:FF:FF:FF.

OUI prefix: 10:C2:BA
Hyphen form: 10-C2-BA
MAC range: 10:C2:BA:00:00:00 – 10:C2:BA:FF:FF:FF
Addresses in block: 16,777,216
Organization: UTT Co., Ltd.
Address: Seoul Korea KR 135-913
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 "UTT Co., Ltd."
archived source →
2026-07-17Assigned to "UTT Co., Ltd."

Nearby in the registry

The prefixes assigned immediately before and after 10:C2:BA:

FAQ

Which company owns MAC address prefix 10:C2:BA?: MAC address prefix 10:C2:BA is registered to UTT Co., Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 10:C2:BA has a network interface built by UTT Co., Ltd..
What is the OUI 10:C2:BA?: 10:C2:BA is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to UTT Co., Ltd.. It covers every address from 10:C2:BA:00:00:00 to 10:C2:BA:FF:FF:FF, or 16,777,216 addresses in total. It is also written 10-C2-BA.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 10:C2:BA:00:00:00 that is 10:C2:BA — 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 UTT Co., Ltd. located?: UTT Co., Ltd. is listed at Seoul Korea KR 135-913 in the IEEE OUI registry entry for 10:C2:BA. This is the address the organization registered with the IEEE, which may differ from its current operating address.