Which company owns MAC address prefix 48:A2:B8?

MAC address prefix 48:A2:B8 is registered to Chengdu Vision-Zenith Tech.Co,.Ltd in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 48:A2:B8 has a network interface built by Chengdu Vision-Zenith Tech.Co,.Ltd.

What is the OUI 48:A2:B8?

48:A2:B8 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Chengdu Vision-Zenith Tech.Co,.Ltd. It covers every address from 48:A2:B8:00:00:00 to 48:A2:B8:FF:FF:FF, or 16,777,216 addresses in total. It is also written 48-A2-B8.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 48:A2:B8:00:00:00 that is 48:A2:B8 — 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 Chengdu Vision-Zenith Tech.Co,.Ltd located?

Chengdu Vision-Zenith Tech.Co,.Ltd is listed at China (Sichuan) Free Trade Test Zone Chengdu Hi-tech Zone 300 Jiaozi Avenue 3 buildings 22 Chengdu Sichuan CN 610041 in the IEEE OUI registry entry for 48:A2:B8. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Chengdu Vision-Zenith Tech.Co,.Ltd

MAC address prefix 48:A2:B8 is registered to Chengdu Vision-Zenith Tech.Co,.Ltd in the IEEE OUI registry. Any device whose MAC address begins with 48:A2:B8 has a network interface built by Chengdu Vision-Zenith Tech.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 48:A2:B8:00:00:00 to 48:A2:B8:FF:FF:FF.

OUI prefix: 48:A2:B8
Hyphen form: 48-A2-B8
MAC range: 48:A2:B8:00:00:00 – 48:A2:B8:FF:FF:FF
Addresses in block: 16,777,216
Organization: Chengdu Vision-Zenith Tech.Co,.Ltd
Address: China (Sichuan) Free Trade Test Zone Chengdu Hi-tech Zone 300 Jiaozi Avenue 3 buildings 22 Chengdu Sichuan CN 610041
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.

2020-08-05Assigned to "Chengdu Vision-Zenith Tech.Co,.Ltd"
archived source →
2026-07-17Assigned to "Chengdu Vision-Zenith Tech.Co,.Ltd"

Nearby in the registry

The prefixes assigned immediately before and after 48:A2:B8:

FAQ

Which company owns MAC address prefix 48:A2:B8?: MAC address prefix 48:A2:B8 is registered to Chengdu Vision-Zenith Tech.Co,.Ltd in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 48:A2:B8 has a network interface built by Chengdu Vision-Zenith Tech.Co,.Ltd.
What is the OUI 48:A2:B8?: 48:A2:B8 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Chengdu Vision-Zenith Tech.Co,.Ltd. It covers every address from 48:A2:B8:00:00:00 to 48:A2:B8:FF:FF:FF, or 16,777,216 addresses in total. It is also written 48-A2-B8.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 48:A2:B8:00:00:00 that is 48:A2:B8 — 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 Chengdu Vision-Zenith Tech.Co,.Ltd located?: Chengdu Vision-Zenith Tech.Co,.Ltd is listed at China (Sichuan) Free Trade Test Zone Chengdu Hi-tech Zone 300 Jiaozi Avenue 3 buildings 22 Chengdu Sichuan CN 610041 in the IEEE OUI registry entry for 48:A2:B8. This is the address the organization registered with the IEEE, which may differ from its current operating address.