Which company owns MAC address prefix 00:0F:F5?

MAC address prefix 00:0F:F5 is registered to GN&S company in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 00:0F:F5 has a network interface built by GN&S company.

What is the OUI 00:0F:F5?

00:0F:F5 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to GN&S company. It covers every address from 00:0F:F5:00:00:00 to 00:0F:F5:FF:FF:FF, or 16,777,216 addresses in total. It is also written 00-0F-F5.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 00:0F:F5:00:00:00 that is 00:0F:F5 — 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 GN&S company located?

GN&S company is listed at 301 Ansan S/W center, 643-7 wongok-dong Ansan city Gyeonggi-do KR 425-130 in the IEEE OUI registry entry for 00:0F:F5. This is the address the organization registered with the IEEE, which may differ from its current operating address.

GN&S company

MAC address prefix 00:0F:F5 is registered to GN&S company in the IEEE OUI registry. Any device whose MAC address begins with 00:0F:F5 has a network interface built by GN&S company. 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 00:0F:F5:00:00:00 to 00:0F:F5:FF:FF:FF.

OUI prefix: 00:0F:F5
Hyphen form: 00-0F-F5
MAC range: 00:0F:F5:00:00:00 – 00:0F:F5:FF:FF:FF
Addresses in block: 16,777,216
Organization: GN&S company
Address: 301 Ansan S/W center, 643-7 wongok-dong Ansan city Gyeonggi-do KR 425-130
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 "GN&S company"
archived source →
2026-07-17Assigned to "GN&S company"

Nearby in the registry

The prefixes assigned immediately before and after 00:0F:F5:

FAQ

Which company owns MAC address prefix 00:0F:F5?: MAC address prefix 00:0F:F5 is registered to GN&S company in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 00:0F:F5 has a network interface built by GN&S company.
What is the OUI 00:0F:F5?: 00:0F:F5 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to GN&S company. It covers every address from 00:0F:F5:00:00:00 to 00:0F:F5:FF:FF:FF, or 16,777,216 addresses in total. It is also written 00-0F-F5.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 00:0F:F5:00:00:00 that is 00:0F:F5 — 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 GN&S company located?: GN&S company is listed at 301 Ansan S/W center, 643-7 wongok-dong Ansan city Gyeonggi-do KR 425-130 in the IEEE OUI registry entry for 00:0F:F5. This is the address the organization registered with the IEEE, which may differ from its current operating address.