Which company owns MAC address prefix 4C:9D:22?

MAC address prefix 4C:9D:22 is registered to ACES Co.,Ltd in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 4C:9D:22 has a network interface built by ACES Co.,Ltd.

What is the OUI 4C:9D:22?

4C:9D:22 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to ACES Co.,Ltd. It covers every address from 4C:9D:22:00:00:00 to 4C:9D:22:FF:FF:FF, or 16,777,216 addresses in total. It is also written 4C-9D-22.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 4C:9D:22:00:00:00 that is 4C:9D:22 — 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 ACES Co.,Ltd located?

ACES Co.,Ltd is listed at TianGong Avenue #916, Tianfu New Area ChengDu Sichuan Province CN 610000 in the IEEE OUI registry entry for 4C:9D:22. This is the address the organization registered with the IEEE, which may differ from its current operating address.

ACES Co.,Ltd

MAC address prefix 4C:9D:22 is registered to ACES Co.,Ltd in the IEEE OUI registry. Any device whose MAC address begins with 4C:9D:22 has a network interface built by ACES 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 4C:9D:22:00:00:00 to 4C:9D:22:FF:FF:FF.

OUI prefix: 4C:9D:22
Hyphen form: 4C-9D-22
MAC range: 4C:9D:22:00:00:00 – 4C:9D:22:FF:FF:FF
Addresses in block: 16,777,216
Organization: ACES Co.,Ltd
Address: TianGong Avenue #916, Tianfu New Area ChengDu Sichuan Province CN 610000
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.

2022-07-11Assigned to "ACES Co.,Ltd"
archived source →
2026-07-17Assigned to "ACES Co.,Ltd"

Nearby in the registry

The prefixes assigned immediately before and after 4C:9D:22:

FAQ

Which company owns MAC address prefix 4C:9D:22?: MAC address prefix 4C:9D:22 is registered to ACES Co.,Ltd in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 4C:9D:22 has a network interface built by ACES Co.,Ltd.
What is the OUI 4C:9D:22?: 4C:9D:22 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to ACES Co.,Ltd. It covers every address from 4C:9D:22:00:00:00 to 4C:9D:22:FF:FF:FF, or 16,777,216 addresses in total. It is also written 4C-9D-22.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 4C:9D:22:00:00:00 that is 4C:9D:22 — 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 ACES Co.,Ltd located?: ACES Co.,Ltd is listed at TianGong Avenue #916, Tianfu New Area ChengDu Sichuan Province CN 610000 in the IEEE OUI registry entry for 4C:9D:22. This is the address the organization registered with the IEEE, which may differ from its current operating address.