Which company owns MAC address prefix B8:BB:6D?

MAC address prefix B8:BB:6D is registered to ENERES Co.,Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with B8:BB:6D has a network interface built by ENERES Co.,Ltd..

What is the OUI B8:BB:6D?

B8:BB:6D is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to ENERES Co.,Ltd.. It covers every address from B8:BB:6D:00:00:00 to B8:BB:6D:FF:FF:FF, or 16,777,216 addresses in total. It is also written B8-BB-6D.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in B8:BB:6D:00:00:00 that is B8:BB:6D — 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 ENERES Co.,Ltd. located?

ENERES Co.,Ltd. is listed at 1907 Tokyo Art Center Adahci-ku Tokyo JP 120-0034 in the IEEE OUI registry entry for B8:BB:6D. This is the address the organization registered with the IEEE, which may differ from its current operating address.

ENERES Co.,Ltd.

MAC address prefix B8:BB:6D is registered to ENERES Co.,Ltd. in the IEEE OUI registry. Any device whose MAC address begins with B8:BB:6D has a network interface built by ENERES 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 B8:BB:6D:00:00:00 to B8:BB:6D:FF:FF:FF.

OUI prefix: B8:BB:6D
Hyphen form: B8-BB-6D
MAC range: B8:BB:6D:00:00:00 – B8:BB:6D:FF:FF:FF
Addresses in block: 16,777,216
Organization: ENERES Co.,Ltd.
Address: 1907 Tokyo Art Center Adahci-ku Tokyo JP 120-0034
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 "ENERES Co.,Ltd."
archived source →
2026-07-17Assigned to "ENERES Co.,Ltd."

Nearby in the registry

The prefixes assigned immediately before and after B8:BB:6D:

FAQ

Which company owns MAC address prefix B8:BB:6D?: MAC address prefix B8:BB:6D is registered to ENERES Co.,Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with B8:BB:6D has a network interface built by ENERES Co.,Ltd..
What is the OUI B8:BB:6D?: B8:BB:6D is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to ENERES Co.,Ltd.. It covers every address from B8:BB:6D:00:00:00 to B8:BB:6D:FF:FF:FF, or 16,777,216 addresses in total. It is also written B8-BB-6D.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in B8:BB:6D:00:00:00 that is B8:BB:6D — 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 ENERES Co.,Ltd. located?: ENERES Co.,Ltd. is listed at 1907 Tokyo Art Center Adahci-ku Tokyo JP 120-0034 in the IEEE OUI registry entry for B8:BB:6D. This is the address the organization registered with the IEEE, which may differ from its current operating address.