Which company owns MAC address prefix DC:CD:74?

MAC address prefix DC:CD:74 is registered to Japan E.M.Solutions Co., Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with DC:CD:74 has a network interface built by Japan E.M.Solutions Co., Ltd..

What is the OUI DC:CD:74?

DC:CD:74 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Japan E.M.Solutions Co., Ltd.. It covers every address from DC:CD:74:00:00:00 to DC:CD:74:FF:FF:FF, or 16,777,216 addresses in total. It is also written DC-CD-74.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in DC:CD:74:00:00:00 that is DC:CD:74 — 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 Japan E.M.Solutions Co., Ltd. located?

Japan E.M.Solutions Co., Ltd. is listed at 35 Saho Kato JP 673-1447 in the IEEE OUI registry entry for DC:CD:74. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Japan E.M.Solutions Co., Ltd.

MAC address prefix DC:CD:74 is registered to Japan E.M.Solutions Co., Ltd. in the IEEE OUI registry. Any device whose MAC address begins with DC:CD:74 has a network interface built by Japan E.M.Solutions 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 DC:CD:74:00:00:00 to DC:CD:74:FF:FF:FF.

OUI prefix: DC:CD:74
Hyphen form: DC-CD-74
MAC range: DC:CD:74:00:00:00 – DC:CD:74:FF:FF:FF
Addresses in block: 16,777,216
Organization: Japan E.M.Solutions Co., Ltd.
Address: 35 Saho Kato JP 673-1447
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.

2020-11-28Assigned to "Japan E.M.Solutions Co., Ltd."
archived source →
2026-07-17Assigned to "Japan E.M.Solutions Co., Ltd."

Nearby in the registry

The prefixes assigned immediately before and after DC:CD:74:

FAQ

Which company owns MAC address prefix DC:CD:74?: MAC address prefix DC:CD:74 is registered to Japan E.M.Solutions Co., Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with DC:CD:74 has a network interface built by Japan E.M.Solutions Co., Ltd..
What is the OUI DC:CD:74?: DC:CD:74 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Japan E.M.Solutions Co., Ltd.. It covers every address from DC:CD:74:00:00:00 to DC:CD:74:FF:FF:FF, or 16,777,216 addresses in total. It is also written DC-CD-74.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in DC:CD:74:00:00:00 that is DC:CD:74 — 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 Japan E.M.Solutions Co., Ltd. located?: Japan E.M.Solutions Co., Ltd. is listed at 35 Saho Kato JP 673-1447 in the IEEE OUI registry entry for DC:CD:74. This is the address the organization registered with the IEEE, which may differ from its current operating address.