Which company owns MAC address prefix 28:8E:B9?

MAC address prefix 28:8E:B9 is registered to Wacom Co.,Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 28:8E:B9 has a network interface built by Wacom Co.,Ltd..

What is the OUI 28:8E:B9?

28:8E:B9 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Wacom Co.,Ltd.. It covers every address from 28:8E:B9:00:00:00 to 28:8E:B9:FF:FF:FF, or 16,777,216 addresses in total. It is also written 28-8E-B9.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 28:8E:B9:00:00:00 that is 28:8E:B9 — 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 Wacom Co.,Ltd. located?

Wacom Co.,Ltd. is listed at Sumitomo Fudosan Shinjuku Grand Tower 31F,8-17-1 Nishi-shinjuku,Shinjuku-ku Tokyo JP 160-6131 in the IEEE OUI registry entry for 28:8E:B9. This is the address the organization registered with the IEEE, which may differ from its current operating address.

How many MAC prefixes does Wacom Co.,Ltd. own?

Wacom Co.,Ltd. holds 7 OUI prefixes in the IEEE registry, of which 28:8E:B9 is one. A device made by Wacom Co.,Ltd. could carry a MAC address from any of them.

Wacom Co.,Ltd.

MAC address prefix 28:8E:B9 is registered to Wacom Co.,Ltd. in the IEEE OUI registry. Any device whose MAC address begins with 28:8E:B9 has a network interface built by Wacom 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 28:8E:B9:00:00:00 to 28:8E:B9:FF:FF:FF.

OUI prefix: 28:8E:B9
Hyphen form: 28-8E-B9
MAC range: 28:8E:B9:00:00:00 – 28:8E:B9:FF:FF:FF
Addresses in block: 16,777,216
Organization: Wacom Co.,Ltd.
Address: Sumitomo Fudosan Shinjuku Grand Tower 31F,8-17-1 Nishi-shinjuku,Shinjuku-ku Tokyo JP 160-6131
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.

Other prefixes from Wacom Co.,Ltd.

Wacom Co.,Ltd. holds 7 OUI prefixes in total. A device with this exact prefix could just as well carry any of these:

Assignment history (2)

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

2023-07-11Assigned to "Wacom Co.,Ltd."
archived source →
2026-07-17Assigned to "Wacom Co.,Ltd."

Nearby in the registry

The prefixes assigned immediately before and after 28:8E:B9:

FAQ

Which company owns MAC address prefix 28:8E:B9?: MAC address prefix 28:8E:B9 is registered to Wacom Co.,Ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 28:8E:B9 has a network interface built by Wacom Co.,Ltd..
What is the OUI 28:8E:B9?: 28:8E:B9 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Wacom Co.,Ltd.. It covers every address from 28:8E:B9:00:00:00 to 28:8E:B9:FF:FF:FF, or 16,777,216 addresses in total. It is also written 28-8E-B9.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 28:8E:B9:00:00:00 that is 28:8E:B9 — 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 Wacom Co.,Ltd. located?: Wacom Co.,Ltd. is listed at Sumitomo Fudosan Shinjuku Grand Tower 31F,8-17-1 Nishi-shinjuku,Shinjuku-ku Tokyo JP 160-6131 in the IEEE OUI registry entry for 28:8E:B9. This is the address the organization registered with the IEEE, which may differ from its current operating address.
How many MAC prefixes does Wacom Co.,Ltd. own?: Wacom Co.,Ltd. holds 7 OUI prefixes in the IEEE registry, of which 28:8E:B9 is one. A device made by Wacom Co.,Ltd. could carry a MAC address from any of them.