Which company owns MAC address prefix 9C:CD:82?

MAC address prefix 9C:CD:82 is registered to CHENG UEI PRECISION INDUSTRY CO.,LTD in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 9C:CD:82 has a network interface built by CHENG UEI PRECISION INDUSTRY CO.,LTD.

What is the OUI 9C:CD:82?

9C:CD:82 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to CHENG UEI PRECISION INDUSTRY CO.,LTD. It covers every address from 9C:CD:82:00:00:00 to 9C:CD:82:FF:FF:FF, or 16,777,216 addresses in total. It is also written 9C-CD-82.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 9C:CD:82:00:00:00 that is 9C:CD:82 — 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 CHENG UEI PRECISION INDUSTRY CO.,LTD located?

CHENG UEI PRECISION INDUSTRY CO.,LTD is listed at No.18, Chung Shan Rd., Tu-Cheng Industry Park Tu Cheng City Taipei Hsien TW 23680 in the IEEE OUI registry entry for 9C:CD:82. This is the address the organization registered with the IEEE, which may differ from its current operating address.

CHENG UEI PRECISION INDUSTRY CO.,LTD

MAC address prefix 9C:CD:82 is registered to CHENG UEI PRECISION INDUSTRY CO.,LTD in the IEEE OUI registry. Any device whose MAC address begins with 9C:CD:82 has a network interface built by CHENG UEI PRECISION INDUSTRY 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 9C:CD:82:00:00:00 to 9C:CD:82:FF:FF:FF.

OUI prefix: 9C:CD:82
Hyphen form: 9C-CD-82
MAC range: 9C:CD:82:00:00:00 – 9C:CD:82:FF:FF:FF
Addresses in block: 16,777,216
Organization: CHENG UEI PRECISION INDUSTRY CO.,LTD
Address: No.18, Chung Shan Rd., Tu-Cheng Industry Park Tu Cheng City Taipei Hsien TW 23680
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 "CHENG UEI PRECISION INDUSTRY CO.,LTD"
archived source →
2026-07-17Assigned to "CHENG UEI PRECISION INDUSTRY CO.,LTD"

Nearby in the registry

The prefixes assigned immediately before and after 9C:CD:82:

FAQ

Which company owns MAC address prefix 9C:CD:82?: MAC address prefix 9C:CD:82 is registered to CHENG UEI PRECISION INDUSTRY CO.,LTD in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 9C:CD:82 has a network interface built by CHENG UEI PRECISION INDUSTRY CO.,LTD.
What is the OUI 9C:CD:82?: 9C:CD:82 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to CHENG UEI PRECISION INDUSTRY CO.,LTD. It covers every address from 9C:CD:82:00:00:00 to 9C:CD:82:FF:FF:FF, or 16,777,216 addresses in total. It is also written 9C-CD-82.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 9C:CD:82:00:00:00 that is 9C:CD:82 — 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 CHENG UEI PRECISION INDUSTRY CO.,LTD located?: CHENG UEI PRECISION INDUSTRY CO.,LTD is listed at No.18, Chung Shan Rd., Tu-Cheng Industry Park Tu Cheng City Taipei Hsien TW 23680 in the IEEE OUI registry entry for 9C:CD:82. This is the address the organization registered with the IEEE, which may differ from its current operating address.