Which company owns MAC address prefix 04:46:CF?

MAC address prefix 04:46:CF is registered to Beijing Venustech Cybervision Co.,Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 04:46:CF has a network interface built by Beijing Venustech Cybervision Co.,Ltd..

What is the OUI 04:46:CF?

04:46:CF is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Beijing Venustech Cybervision Co.,Ltd.. It covers every address from 04:46:CF:00:00:00 to 04:46:CF:FF:FF:FF, or 16,777,216 addresses in total. It is also written 04-46-CF.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 04:46:CF:00:00:00 that is 04:46:CF — 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 Beijing Venustech Cybervision Co.,Ltd. located?

Beijing Venustech Cybervision Co.,Ltd. is listed at Venus Plaza No.21Zhongguancun Software Park,No.8 Dongbeiwang Xilu, Haidian District Beijing Beijing CN 100193 in the IEEE OUI registry entry for 04:46:CF. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Beijing Venustech Cybervision Co.,Ltd.

MAC address prefix 04:46:CF is registered to Beijing Venustech Cybervision Co.,Ltd. in the IEEE OUI registry. Any device whose MAC address begins with 04:46:CF has a network interface built by Beijing Venustech Cybervision 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 04:46:CF:00:00:00 to 04:46:CF:FF:FF:FF.

OUI prefix: 04:46:CF
Hyphen form: 04-46-CF
MAC range: 04:46:CF:00:00:00 – 04:46:CF:FF:FF:FF
Addresses in block: 16,777,216
Organization: Beijing Venustech Cybervision Co.,Ltd.
Address: Venus Plaza No.21Zhongguancun Software Park,No.8 Dongbeiwang Xilu, Haidian District Beijing Beijing CN 100193
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 "Beijing Venustech Cybervision Co.,Ltd."
archived source →
2026-07-17Assigned to "Beijing Venustech Cybervision Co.,Ltd."

Nearby in the registry

The prefixes assigned immediately before and after 04:46:CF:

FAQ

Which company owns MAC address prefix 04:46:CF?: MAC address prefix 04:46:CF is registered to Beijing Venustech Cybervision Co.,Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 04:46:CF has a network interface built by Beijing Venustech Cybervision Co.,Ltd..
What is the OUI 04:46:CF?: 04:46:CF is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Beijing Venustech Cybervision Co.,Ltd.. It covers every address from 04:46:CF:00:00:00 to 04:46:CF:FF:FF:FF, or 16,777,216 addresses in total. It is also written 04-46-CF.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 04:46:CF:00:00:00 that is 04:46:CF — 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 Beijing Venustech Cybervision Co.,Ltd. located?: Beijing Venustech Cybervision Co.,Ltd. is listed at Venus Plaza No.21Zhongguancun Software Park,No.8 Dongbeiwang Xilu, Haidian District Beijing Beijing CN 100193 in the IEEE OUI registry entry for 04:46:CF. This is the address the organization registered with the IEEE, which may differ from its current operating address.