Which company owns MAC address prefix 9C:C7:B1?

MAC address prefix 9C:C7:B1 is registered to ELITEGROUP COMPUTER SYSTEMS CO.,LTD. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 9C:C7:B1 has a network interface built by ELITEGROUP COMPUTER SYSTEMS CO.,LTD..

What is the OUI 9C:C7:B1?

9C:C7:B1 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to ELITEGROUP COMPUTER SYSTEMS CO.,LTD.. It covers every address from 9C:C7:B1:00:00:00 to 9C:C7:B1:FF:FF:FF, or 16,777,216 addresses in total. It is also written 9C-C7-B1.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 9C:C7:B1:00:00:00 that is 9C:C7:B1 — 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 ELITEGROUP COMPUTER SYSTEMS CO.,LTD. located?

ELITEGROUP COMPUTER SYSTEMS CO.,LTD. is listed at No.22-1,Sec.3 Zhongshan N. Rd.,Zhongshan Dist., Taipei City ,Taiwan Taipei TW 104427 in the IEEE OUI registry entry for 9C:C7:B1. This is the address the organization registered with the IEEE, which may differ from its current operating address.

ELITEGROUP COMPUTER SYSTEMS CO.,LTD.

MAC address prefix 9C:C7:B1 is registered to ELITEGROUP COMPUTER SYSTEMS CO.,LTD. in the IEEE OUI registry. Any device whose MAC address begins with 9C:C7:B1 has a network interface built by ELITEGROUP COMPUTER SYSTEMS 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:C7:B1:00:00:00 to 9C:C7:B1:FF:FF:FF.

OUI prefix: 9C:C7:B1
Hyphen form: 9C-C7-B1
MAC range: 9C:C7:B1:00:00:00 – 9C:C7:B1:FF:FF:FF
Addresses in block: 16,777,216
Organization: ELITEGROUP COMPUTER SYSTEMS CO.,LTD.
Address: No.22-1,Sec.3 Zhongshan N. Rd.,Zhongshan Dist., Taipei City ,Taiwan Taipei TW 104427
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.

2025-05-13Assigned to "ELITEGROUP COMPUTER SYSTEMS CO.,LTD."
archived source →
2026-07-17Assigned to "ELITEGROUP COMPUTER SYSTEMS CO.,LTD."

Nearby in the registry

The prefixes assigned immediately before and after 9C:C7:B1:

FAQ

Which company owns MAC address prefix 9C:C7:B1?: MAC address prefix 9C:C7:B1 is registered to ELITEGROUP COMPUTER SYSTEMS CO.,LTD. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 9C:C7:B1 has a network interface built by ELITEGROUP COMPUTER SYSTEMS CO.,LTD..
What is the OUI 9C:C7:B1?: 9C:C7:B1 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to ELITEGROUP COMPUTER SYSTEMS CO.,LTD.. It covers every address from 9C:C7:B1:00:00:00 to 9C:C7:B1:FF:FF:FF, or 16,777,216 addresses in total. It is also written 9C-C7-B1.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 9C:C7:B1:00:00:00 that is 9C:C7:B1 — 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 ELITEGROUP COMPUTER SYSTEMS CO.,LTD. located?: ELITEGROUP COMPUTER SYSTEMS CO.,LTD. is listed at No.22-1,Sec.3 Zhongshan N. Rd.,Zhongshan Dist., Taipei City ,Taiwan Taipei TW 104427 in the IEEE OUI registry entry for 9C:C7:B1. This is the address the organization registered with the IEEE, which may differ from its current operating address.