Which company owns MAC address prefix F4:83:E1?

MAC address prefix F4:83:E1 is registered to Shanghai Clouder Semiconductor Co.,Ltd in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with F4:83:E1 has a network interface built by Shanghai Clouder Semiconductor Co.,Ltd.

What is the OUI F4:83:E1?

F4:83:E1 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Shanghai Clouder Semiconductor Co.,Ltd. It covers every address from F4:83:E1:00:00:00 to F4:83:E1:FF:FF:FF, or 16,777,216 addresses in total. It is also written F4-83-E1.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in F4:83:E1:00:00:00 that is F4:83:E1 — 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 Shanghai Clouder Semiconductor Co.,Ltd located?

Shanghai Clouder Semiconductor Co.,Ltd is listed at Room515,No.8,Wuzhong Rd,Xuhui District Shanghai Shanghai CN 200336 in the IEEE OUI registry entry for F4:83:E1. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Shanghai Clouder Semiconductor Co.,Ltd

MAC address prefix F4:83:E1 is registered to Shanghai Clouder Semiconductor Co.,Ltd in the IEEE OUI registry. Any device whose MAC address begins with F4:83:E1 has a network interface built by Shanghai Clouder Semiconductor 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 F4:83:E1:00:00:00 to F4:83:E1:FF:FF:FF.

OUI prefix: F4:83:E1
Hyphen form: F4-83-E1
MAC range: F4:83:E1:00:00:00 – F4:83:E1:FF:FF:FF
Addresses in block: 16,777,216
Organization: Shanghai Clouder Semiconductor Co.,Ltd
Address: Room515,No.8,Wuzhong Rd,Xuhui District Shanghai Shanghai CN 200336
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.

2017-09-08Assigned to "Shanghai Clouder Semiconductor Co.,Ltd"
archived source →
2026-07-17Assigned to "Shanghai Clouder Semiconductor Co.,Ltd"

Nearby in the registry

The prefixes assigned immediately before and after F4:83:E1:

FAQ

Which company owns MAC address prefix F4:83:E1?: MAC address prefix F4:83:E1 is registered to Shanghai Clouder Semiconductor Co.,Ltd in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with F4:83:E1 has a network interface built by Shanghai Clouder Semiconductor Co.,Ltd.
What is the OUI F4:83:E1?: F4:83:E1 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Shanghai Clouder Semiconductor Co.,Ltd. It covers every address from F4:83:E1:00:00:00 to F4:83:E1:FF:FF:FF, or 16,777,216 addresses in total. It is also written F4-83-E1.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in F4:83:E1:00:00:00 that is F4:83:E1 — 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 Shanghai Clouder Semiconductor Co.,Ltd located?: Shanghai Clouder Semiconductor Co.,Ltd is listed at Room515,No.8,Wuzhong Rd,Xuhui District Shanghai Shanghai CN 200336 in the IEEE OUI registry entry for F4:83:E1. This is the address the organization registered with the IEEE, which may differ from its current operating address.