Which company owns MAC address prefix D4:61:32?

MAC address prefix D4:61:32 is registered to Pro Concept Manufacturer Co.,Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with D4:61:32 has a network interface built by Pro Concept Manufacturer Co.,Ltd..

What is the OUI D4:61:32?

D4:61:32 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Pro Concept Manufacturer Co.,Ltd.. It covers every address from D4:61:32:00:00:00 to D4:61:32:FF:FF:FF, or 16,777,216 addresses in total. It is also written D4-61-32.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in D4:61:32:00:00:00 that is D4:61:32 — 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 Pro Concept Manufacturer Co.,Ltd. located?

Pro Concept Manufacturer Co.,Ltd. is listed at 88/1 Moo12 Soi Phetkasem120 Kratumbaen Samutsakorn TH 74130 in the IEEE OUI registry entry for D4:61:32. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Pro Concept Manufacturer Co.,Ltd.

MAC address prefix D4:61:32 is registered to Pro Concept Manufacturer Co.,Ltd. in the IEEE OUI registry. Any device whose MAC address begins with D4:61:32 has a network interface built by Pro Concept Manufacturer 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 D4:61:32:00:00:00 to D4:61:32:FF:FF:FF.

OUI prefix: D4:61:32
Hyphen form: D4-61-32
MAC range: D4:61:32:00:00:00 – D4:61:32:FF:FF:FF
Addresses in block: 16,777,216
Organization: Pro Concept Manufacturer Co.,Ltd.
Address: 88/1 Moo12 Soi Phetkasem120 Kratumbaen Samutsakorn TH 74130
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.

2016-07-29Assigned to "Pro Concept Manufacturer Co.,Ltd."
archived source →
2026-07-17Assigned to "Pro Concept Manufacturer Co.,Ltd."

Nearby in the registry

The prefixes assigned immediately before and after D4:61:32:

FAQ

Which company owns MAC address prefix D4:61:32?: MAC address prefix D4:61:32 is registered to Pro Concept Manufacturer Co.,Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with D4:61:32 has a network interface built by Pro Concept Manufacturer Co.,Ltd..
What is the OUI D4:61:32?: D4:61:32 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Pro Concept Manufacturer Co.,Ltd.. It covers every address from D4:61:32:00:00:00 to D4:61:32:FF:FF:FF, or 16,777,216 addresses in total. It is also written D4-61-32.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in D4:61:32:00:00:00 that is D4:61:32 — 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 Pro Concept Manufacturer Co.,Ltd. located?: Pro Concept Manufacturer Co.,Ltd. is listed at 88/1 Moo12 Soi Phetkasem120 Kratumbaen Samutsakorn TH 74130 in the IEEE OUI registry entry for D4:61:32. This is the address the organization registered with the IEEE, which may differ from its current operating address.