Which company owns MAC address prefix 90:F9:64?

MAC address prefix 90:F9:64 is registered to Rawasi Co in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 90:F9:64 has a network interface built by Rawasi Co.

What is the OUI 90:F9:64?

90:F9:64 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Rawasi Co. It covers every address from 90:F9:64:00:00:00 to 90:F9:64:FF:FF:FF, or 16,777,216 addresses in total. It is also written 90-F9-64.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 90:F9:64:00:00:00 that is 90:F9:64 — 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 Rawasi Co located?

Rawasi Co is listed at 6-20, 206, Rokubancho Chiyoda City Tokyo JP 102-0085 in the IEEE OUI registry entry for 90:F9:64. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Rawasi Co

MAC address prefix 90:F9:64 is registered to Rawasi Co in the IEEE OUI registry. Any device whose MAC address begins with 90:F9:64 has a network interface built by Rawasi Co. 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 90:F9:64:00:00:00 to 90:F9:64:FF:FF:FF.

OUI prefix: 90:F9:64
Hyphen form: 90-F9-64
MAC range: 90:F9:64:00:00:00 – 90:F9:64:FF:FF:FF
Addresses in block: 16,777,216
Organization: Rawasi Co
Address: 6-20, 206, Rokubancho Chiyoda City Tokyo JP 102-0085
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.

2025-02-27Assigned to "Rawasi Co"
archived source →
2026-07-17Assigned to "Rawasi Co"

Nearby in the registry

The prefixes assigned immediately before and after 90:F9:64:

FAQ

Which company owns MAC address prefix 90:F9:64?: MAC address prefix 90:F9:64 is registered to Rawasi Co in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 90:F9:64 has a network interface built by Rawasi Co.
What is the OUI 90:F9:64?: 90:F9:64 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Rawasi Co. It covers every address from 90:F9:64:00:00:00 to 90:F9:64:FF:FF:FF, or 16,777,216 addresses in total. It is also written 90-F9-64.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 90:F9:64:00:00:00 that is 90:F9:64 — 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 Rawasi Co located?: Rawasi Co is listed at 6-20, 206, Rokubancho Chiyoda City Tokyo JP 102-0085 in the IEEE OUI registry entry for 90:F9:64. This is the address the organization registered with the IEEE, which may differ from its current operating address.