Which company owns MAC address prefix D8:DD:5F?

MAC address prefix D8:DD:5F is registered to BALMUDA Inc. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with D8:DD:5F has a network interface built by BALMUDA Inc..

What is the OUI D8:DD:5F?

D8:DD:5F is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to BALMUDA Inc.. It covers every address from D8:DD:5F:00:00:00 to D8:DD:5F:FF:FF:FF, or 16,777,216 addresses in total. It is also written D8-DD-5F.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in D8:DD:5F:00:00:00 that is D8:DD:5F — 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 BALMUDA Inc. located?

BALMUDA Inc. is listed at 5-1-21 Kyonancho Musashino Tokyo JP 180-0023 in the IEEE OUI registry entry for D8:DD:5F. This is the address the organization registered with the IEEE, which may differ from its current operating address.

BALMUDA Inc.

MAC address prefix D8:DD:5F is registered to BALMUDA Inc. in the IEEE OUI registry. Any device whose MAC address begins with D8:DD:5F has a network interface built by BALMUDA Inc.. 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 D8:DD:5F:00:00:00 to D8:DD:5F:FF:FF:FF.

OUI prefix: D8:DD:5F
Hyphen form: D8-DD-5F
MAC range: D8:DD:5F:00:00:00 – D8:DD:5F:FF:FF:FF
Addresses in block: 16,777,216
Organization: BALMUDA Inc.
Address: 5-1-21 Kyonancho Musashino Tokyo JP 180-0023
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 "BALMUDA Inc."
archived source →
2026-07-17Assigned to "BALMUDA Inc."

Nearby in the registry

The prefixes assigned immediately before and after D8:DD:5F:

FAQ

Which company owns MAC address prefix D8:DD:5F?: MAC address prefix D8:DD:5F is registered to BALMUDA Inc. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with D8:DD:5F has a network interface built by BALMUDA Inc..
What is the OUI D8:DD:5F?: D8:DD:5F is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to BALMUDA Inc.. It covers every address from D8:DD:5F:00:00:00 to D8:DD:5F:FF:FF:FF, or 16,777,216 addresses in total. It is also written D8-DD-5F.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in D8:DD:5F:00:00:00 that is D8:DD:5F — 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 BALMUDA Inc. located?: BALMUDA Inc. is listed at 5-1-21 Kyonancho Musashino Tokyo JP 180-0023 in the IEEE OUI registry entry for D8:DD:5F. This is the address the organization registered with the IEEE, which may differ from its current operating address.