Which company owns MAC address prefix 00:0C:DF?

MAC address prefix 00:0C:DF is registered to JAI Manufacturing in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 00:0C:DF has a network interface built by JAI Manufacturing.

What is the OUI 00:0C:DF?

00:0C:DF is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to JAI Manufacturing. It covers every address from 00:0C:DF:00:00:00 to 00:0C:DF:FF:FF:FF, or 16,777,216 addresses in total. It is also written 00-0C-DF.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 00:0C:DF:00:00:00 that is 00:0C:DF — 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 JAI Manufacturing located?

JAI Manufacturing is listed at 2960-14 Uenojo Nishikata Kushima Miyazaki JP 888-0004 in the IEEE OUI registry entry for 00:0C:DF. This is the address the organization registered with the IEEE, which may differ from its current operating address.

How many MAC prefixes does JAI Manufacturing own?

JAI Manufacturing holds 2 OUI prefixes in the IEEE registry, of which 00:0C:DF is one. A device made by JAI Manufacturing could carry a MAC address from any of them.

JAI Manufacturing

MAC address prefix 00:0C:DF is registered to JAI Manufacturing in the IEEE OUI registry. Any device whose MAC address begins with 00:0C:DF has a network interface built by JAI Manufacturing. 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 00:0C:DF:00:00:00 to 00:0C:DF:FF:FF:FF.

OUI prefix: 00:0C:DF
Hyphen form: 00-0C-DF
MAC range: 00:0C:DF:00:00:00 – 00:0C:DF:FF:FF:FF
Addresses in block: 16,777,216
Organization: JAI Manufacturing
Address: 2960-14 Uenojo Nishikata Kushima Miyazaki JP 888-0004
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 JAI Manufacturing

JAI Manufacturing holds 2 OUI prefixes in total. A device with this exact prefix could just as well carry any of these:

D4:1F:0C

Assignment history (3)

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 "PULNiX America, Inc"
archived source →
2020-03-21Renamed from "PULNiX America, Inc" to "JAI Manufacturing"
archived source →
2026-07-17Assigned to "JAI Manufacturing"

Nearby in the registry

The prefixes assigned immediately before and after 00:0C:DF:

FAQ

Which company owns MAC address prefix 00:0C:DF?: MAC address prefix 00:0C:DF is registered to JAI Manufacturing in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 00:0C:DF has a network interface built by JAI Manufacturing.
What is the OUI 00:0C:DF?: 00:0C:DF is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to JAI Manufacturing. It covers every address from 00:0C:DF:00:00:00 to 00:0C:DF:FF:FF:FF, or 16,777,216 addresses in total. It is also written 00-0C-DF.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 00:0C:DF:00:00:00 that is 00:0C:DF — 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 JAI Manufacturing located?: JAI Manufacturing is listed at 2960-14 Uenojo Nishikata Kushima Miyazaki JP 888-0004 in the IEEE OUI registry entry for 00:0C:DF. This is the address the organization registered with the IEEE, which may differ from its current operating address.
How many MAC prefixes does JAI Manufacturing own?: JAI Manufacturing holds 2 OUI prefixes in the IEEE registry, of which 00:0C:DF is one. A device made by JAI Manufacturing could carry a MAC address from any of them.