Which company owns MAC address prefix 90:CF:7D?

MAC address prefix 90:CF:7D is registered to Qingdao Hisense Communications Co.,Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 90:CF:7D has a network interface built by Qingdao Hisense Communications Co.,Ltd..

What is the OUI 90:CF:7D?

90:CF:7D is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Qingdao Hisense Communications Co.,Ltd.. It covers every address from 90:CF:7D:00:00:00 to 90:CF:7D:FF:FF:FF, or 16,777,216 addresses in total. It is also written 90-CF-7D.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 90:CF:7D:00:00:00 that is 90:CF:7D — 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 Qingdao Hisense Communications Co.,Ltd. located?

Qingdao Hisense Communications Co.,Ltd. is listed at Qianwangang Road 218 Qingdao Shandong CN 266510 in the IEEE OUI registry entry for 90:CF:7D. This is the address the organization registered with the IEEE, which may differ from its current operating address.

How many MAC prefixes does Qingdao Hisense Communications Co.,Ltd. own?

Qingdao Hisense Communications Co.,Ltd. holds 13 OUI prefixes in the IEEE registry, of which 90:CF:7D is one. A device made by Qingdao Hisense Communications Co.,Ltd. could carry a MAC address from any of them.

Qingdao Hisense Communications Co.,Ltd.

MAC address prefix 90:CF:7D is registered to Qingdao Hisense Communications Co.,Ltd. in the IEEE OUI registry. Any device whose MAC address begins with 90:CF:7D has a network interface built by Qingdao Hisense Communications 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 90:CF:7D:00:00:00 to 90:CF:7D:FF:FF:FF.

OUI prefix: 90:CF:7D
Hyphen form: 90-CF-7D
MAC range: 90:CF:7D:00:00:00 – 90:CF:7D:FF:FF:FF
Addresses in block: 16,777,216
Organization: Qingdao Hisense Communications Co.,Ltd.
Address: Qianwangang Road 218 Qingdao Shandong CN 266510
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.

Other prefixes from Qingdao Hisense Communications Co.,Ltd.

Qingdao Hisense Communications Co.,Ltd. holds 13 OUI prefixes in total. A device with this exact prefix could just as well carry any of these:

Assignment history (2)

The IEEE registry publishes current state only — this is the change record we've kept since we started tracking it daily.

2016-07-29Assigned to "Qingdao Hisense Communications Co.,Ltd."
archived source →
2026-07-17Assigned to "Qingdao Hisense Communications Co.,Ltd."

Nearby in the registry

The prefixes assigned immediately before and after 90:CF:7D:

FAQ

Which company owns MAC address prefix 90:CF:7D?: MAC address prefix 90:CF:7D is registered to Qingdao Hisense Communications Co.,Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 90:CF:7D has a network interface built by Qingdao Hisense Communications Co.,Ltd..
What is the OUI 90:CF:7D?: 90:CF:7D is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Qingdao Hisense Communications Co.,Ltd.. It covers every address from 90:CF:7D:00:00:00 to 90:CF:7D:FF:FF:FF, or 16,777,216 addresses in total. It is also written 90-CF-7D.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 90:CF:7D:00:00:00 that is 90:CF:7D — 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 Qingdao Hisense Communications Co.,Ltd. located?: Qingdao Hisense Communications Co.,Ltd. is listed at Qianwangang Road 218 Qingdao Shandong CN 266510 in the IEEE OUI registry entry for 90:CF:7D. This is the address the organization registered with the IEEE, which may differ from its current operating address.
How many MAC prefixes does Qingdao Hisense Communications Co.,Ltd. own?: Qingdao Hisense Communications Co.,Ltd. holds 13 OUI prefixes in the IEEE registry, of which 90:CF:7D is one. A device made by Qingdao Hisense Communications Co.,Ltd. could carry a MAC address from any of them.