Which company owns MAC address prefix A0:5D:0E?

MAC address prefix A0:5D:0E is registered to ALPSALPINE CO.,LTD. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with A0:5D:0E has a network interface built by ALPSALPINE CO.,LTD..

What is the OUI A0:5D:0E?

A0:5D:0E is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to ALPSALPINE CO.,LTD.. It covers every address from A0:5D:0E:00:00:00 to A0:5D:0E:FF:FF:FF, or 16,777,216 addresses in total. It is also written A0-5D-0E.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in A0:5D:0E:00:00:00 that is A0:5D:0E — 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 ALPSALPINE CO.,LTD. located?

ALPSALPINE CO.,LTD. is listed at nishida 6-1 Kakuda-City Miyagi-Pref JP 981-1595 in the IEEE OUI registry entry for A0:5D:0E. This is the address the organization registered with the IEEE, which may differ from its current operating address.

ALPSALPINE CO.,LTD.

MAC address prefix A0:5D:0E is registered to ALPSALPINE CO.,LTD. in the IEEE OUI registry. Any device whose MAC address begins with A0:5D:0E has a network interface built by ALPSALPINE 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 A0:5D:0E:00:00:00 to A0:5D:0E:FF:FF:FF.

OUI prefix: A0:5D:0E
Hyphen form: A0-5D-0E
MAC range: A0:5D:0E:00:00:00 – A0:5D:0E:FF:FF:FF
Addresses in block: 16,777,216
Organization: ALPSALPINE CO.,LTD.
Address: nishida 6-1 Kakuda-City Miyagi-Pref JP 981-1595
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.

2026-06-20Assigned to "ALPSALPINE CO.,LTD."
archived source →
2026-07-17Assigned to "ALPSALPINE CO.,LTD."

Nearby in the registry

The prefixes assigned immediately before and after A0:5D:0E:

FAQ

Which company owns MAC address prefix A0:5D:0E?: MAC address prefix A0:5D:0E is registered to ALPSALPINE CO.,LTD. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with A0:5D:0E has a network interface built by ALPSALPINE CO.,LTD..
What is the OUI A0:5D:0E?: A0:5D:0E is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to ALPSALPINE CO.,LTD.. It covers every address from A0:5D:0E:00:00:00 to A0:5D:0E:FF:FF:FF, or 16,777,216 addresses in total. It is also written A0-5D-0E.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in A0:5D:0E:00:00:00 that is A0:5D:0E — 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 ALPSALPINE CO.,LTD. located?: ALPSALPINE CO.,LTD. is listed at nishida 6-1 Kakuda-City Miyagi-Pref JP 981-1595 in the IEEE OUI registry entry for A0:5D:0E. This is the address the organization registered with the IEEE, which may differ from its current operating address.