Which company owns MAC address prefix 48:F7:3C?

MAC address prefix 48:F7:3C is registered to ELECOM CO.,LTD in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 48:F7:3C has a network interface built by ELECOM CO.,LTD.

What is the OUI 48:F7:3C?

48:F7:3C is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to ELECOM CO.,LTD. It covers every address from 48:F7:3C:00:00:00 to 48:F7:3C:FF:FF:FF, or 16,777,216 addresses in total. It is also written 48-F7-3C.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 48:F7:3C:00:00:00 that is 48:F7:3C — 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 ELECOM CO.,LTD located?

ELECOM CO.,LTD is listed at 2-6 Kinkocho, Kanagawa-ku, Yokohama Plaza Building 4F Yokohama Kanagawa JP 221-0056 in the IEEE OUI registry entry for 48:F7:3C. This is the address the organization registered with the IEEE, which may differ from its current operating address.

ELECOM CO.,LTD

MAC address prefix 48:F7:3C is registered to ELECOM CO.,LTD in the IEEE OUI registry. Any device whose MAC address begins with 48:F7:3C has a network interface built by ELECOM 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 48:F7:3C:00:00:00 to 48:F7:3C:FF:FF:FF.

OUI prefix: 48:F7:3C
Hyphen form: 48-F7-3C
MAC range: 48:F7:3C:00:00:00 – 48:F7:3C:FF:FF:FF
Addresses in block: 16,777,216
Organization: ELECOM CO.,LTD
Address: 2-6 Kinkocho, Kanagawa-ku, Yokohama Plaza Building 4F Yokohama Kanagawa JP 221-0056
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 (1)

The IEEE registry publishes current state only — this is the change record we've kept since we started tracking it daily.

2026-08-22Assigned to "ELECOM CO.,LTD"

Nearby in the registry

The prefixes assigned immediately before and after 48:F7:3C:

FAQ

Which company owns MAC address prefix 48:F7:3C?: MAC address prefix 48:F7:3C is registered to ELECOM CO.,LTD in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 48:F7:3C has a network interface built by ELECOM CO.,LTD.
What is the OUI 48:F7:3C?: 48:F7:3C is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to ELECOM CO.,LTD. It covers every address from 48:F7:3C:00:00:00 to 48:F7:3C:FF:FF:FF, or 16,777,216 addresses in total. It is also written 48-F7-3C.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 48:F7:3C:00:00:00 that is 48:F7:3C — 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 ELECOM CO.,LTD located?: ELECOM CO.,LTD is listed at 2-6 Kinkocho, Kanagawa-ku, Yokohama Plaza Building 4F Yokohama Kanagawa JP 221-0056 in the IEEE OUI registry entry for 48:F7:3C. This is the address the organization registered with the IEEE, which may differ from its current operating address.