Which company owns MAC address prefix AC:E4:03?

MAC address prefix AC:E4:03 is registered to Shenzhen Visteng Technology CO.,LTD in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with AC:E4:03 has a network interface built by Shenzhen Visteng Technology CO.,LTD.

What is the OUI AC:E4:03?

AC:E4:03 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Shenzhen Visteng Technology CO.,LTD. It covers every address from AC:E4:03:00:00:00 to AC:E4:03:FF:FF:FF, or 16,777,216 addresses in total. It is also written AC-E4-03.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in AC:E4:03:00:00:00 that is AC:E4:03 — 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 Shenzhen Visteng Technology CO.,LTD located?

Shenzhen Visteng Technology CO.,LTD is listed at 6F, M7, MaQueLing, Hi-tech Park, Nanshan District Shenzhen CN 518000 in the IEEE OUI registry entry for AC:E4:03. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Shenzhen Visteng Technology CO.,LTD

MAC address prefix AC:E4:03 is registered to Shenzhen Visteng Technology CO.,LTD in the IEEE OUI registry. Any device whose MAC address begins with AC:E4:03 has a network interface built by Shenzhen Visteng Technology 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 AC:E4:03:00:00:00 to AC:E4:03:FF:FF:FF.

OUI prefix: AC:E4:03
Hyphen form: AC-E4-03
MAC range: AC:E4:03:00:00:00 – AC:E4:03:FF:FF:FF
Addresses in block: 16,777,216
Organization: Shenzhen Visteng Technology CO.,LTD
Address: 6F, M7, MaQueLing, Hi-tech Park, Nanshan District Shenzhen CN 518000
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.

2023-07-11Assigned to "Shenzhen Visteng Technology CO.,LTD"
archived source →
2026-07-17Assigned to "Shenzhen Visteng Technology CO.,LTD"

Nearby in the registry

The prefixes assigned immediately before and after AC:E4:03:

FAQ

Which company owns MAC address prefix AC:E4:03?: MAC address prefix AC:E4:03 is registered to Shenzhen Visteng Technology CO.,LTD in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with AC:E4:03 has a network interface built by Shenzhen Visteng Technology CO.,LTD.
What is the OUI AC:E4:03?: AC:E4:03 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Shenzhen Visteng Technology CO.,LTD. It covers every address from AC:E4:03:00:00:00 to AC:E4:03:FF:FF:FF, or 16,777,216 addresses in total. It is also written AC-E4-03.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in AC:E4:03:00:00:00 that is AC:E4:03 — 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 Shenzhen Visteng Technology CO.,LTD located?: Shenzhen Visteng Technology CO.,LTD is listed at 6F, M7, MaQueLing, Hi-tech Park, Nanshan District Shenzhen CN 518000 in the IEEE OUI registry entry for AC:E4:03. This is the address the organization registered with the IEEE, which may differ from its current operating address.