Which company owns MAC address prefix 30:E2:71?

MAC address prefix 30:E2:71 is registered to Fsas Technologies Inc. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 30:E2:71 has a network interface built by Fsas Technologies Inc..

What is the OUI 30:E2:71?

30:E2:71 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Fsas Technologies Inc.. It covers every address from 30:E2:71:00:00:00 to 30:E2:71:FF:FF:FF, or 16,777,216 addresses in total. It is also written 30-E2-71.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 30:E2:71:00:00:00 that is 30:E2:71 — 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 Fsas Technologies Inc. located?

Fsas Technologies Inc. is listed at JR Kawasaki Tower, 1-5 Omiya-cho, Saiwai-ku Kawasaki City Kanagawa Prefecture JP 212-0014 in the IEEE OUI registry entry for 30:E2:71. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Fsas Technologies Inc.

MAC address prefix 30:E2:71 is registered to Fsas Technologies Inc. in the IEEE OUI registry. Any device whose MAC address begins with 30:E2:71 has a network interface built by Fsas Technologies 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 30:E2:71:00:00:00 to 30:E2:71:FF:FF:FF.

OUI prefix: 30:E2:71
Hyphen form: 30-E2-71
MAC range: 30:E2:71:00:00:00 – 30:E2:71:FF:FF:FF
Addresses in block: 16,777,216
Organization: Fsas Technologies Inc.
Address: JR Kawasaki Tower, 1-5 Omiya-cho, Saiwai-ku Kawasaki City Kanagawa Prefecture JP 212-0014
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.

2025-05-13Assigned to "Fsas Technologies Inc."
archived source →
2026-07-17Assigned to "Fsas Technologies Inc."

Nearby in the registry

The prefixes assigned immediately before and after 30:E2:71:

FAQ

Which company owns MAC address prefix 30:E2:71?: MAC address prefix 30:E2:71 is registered to Fsas Technologies Inc. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 30:E2:71 has a network interface built by Fsas Technologies Inc..
What is the OUI 30:E2:71?: 30:E2:71 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Fsas Technologies Inc.. It covers every address from 30:E2:71:00:00:00 to 30:E2:71:FF:FF:FF, or 16,777,216 addresses in total. It is also written 30-E2-71.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 30:E2:71:00:00:00 that is 30:E2:71 — 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 Fsas Technologies Inc. located?: Fsas Technologies Inc. is listed at JR Kawasaki Tower, 1-5 Omiya-cho, Saiwai-ku Kawasaki City Kanagawa Prefecture JP 212-0014 in the IEEE OUI registry entry for 30:E2:71. This is the address the organization registered with the IEEE, which may differ from its current operating address.