Which company owns MAC address prefix C4:32:D1?

MAC address prefix C4:32:D1 is registered to Farlink Technology Limited in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with C4:32:D1 has a network interface built by Farlink Technology Limited.

What is the OUI C4:32:D1?

C4:32:D1 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Farlink Technology Limited. It covers every address from C4:32:D1:00:00:00 to C4:32:D1:FF:FF:FF, or 16,777,216 addresses in total. It is also written C4-32-D1.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in C4:32:D1:00:00:00 that is C4:32:D1 — 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 Farlink Technology Limited located?

Farlink Technology Limited is listed at Flat A&B,9/F,Wing Cheong Factory Building,121 King Lam Street,Cheung Sha Wan,Hong Kong. Hongkong HK 0000 in the IEEE OUI registry entry for C4:32:D1. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Farlink Technology Limited

MAC address prefix C4:32:D1 is registered to Farlink Technology Limited in the IEEE OUI registry. Any device whose MAC address begins with C4:32:D1 has a network interface built by Farlink Technology Limited. 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 C4:32:D1:00:00:00 to C4:32:D1:FF:FF:FF.

OUI prefix: C4:32:D1
Hyphen form: C4-32-D1
MAC range: C4:32:D1:00:00:00 – C4:32:D1:FF:FF:FF
Addresses in block: 16,777,216
Organization: Farlink Technology Limited
Address: Flat A&B,9/F,Wing Cheong Factory Building,121 King Lam Street,Cheung Sha Wan,Hong Kong. Hongkong HK 0000
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.

2020-03-21Assigned to "Farlink Technology Limited"
archived source →
2026-07-17Assigned to "Farlink Technology Limited"

Nearby in the registry

The prefixes assigned immediately before and after C4:32:D1:

FAQ

Which company owns MAC address prefix C4:32:D1?: MAC address prefix C4:32:D1 is registered to Farlink Technology Limited in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with C4:32:D1 has a network interface built by Farlink Technology Limited.
What is the OUI C4:32:D1?: C4:32:D1 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Farlink Technology Limited. It covers every address from C4:32:D1:00:00:00 to C4:32:D1:FF:FF:FF, or 16,777,216 addresses in total. It is also written C4-32-D1.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in C4:32:D1:00:00:00 that is C4:32:D1 — 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 Farlink Technology Limited located?: Farlink Technology Limited is listed at Flat A&B,9/F,Wing Cheong Factory Building,121 King Lam Street,Cheung Sha Wan,Hong Kong. Hongkong HK 0000 in the IEEE OUI registry entry for C4:32:D1. This is the address the organization registered with the IEEE, which may differ from its current operating address.