Which company owns MAC address prefix F8:F2:5A?

MAC address prefix F8:F2:5A is registered to G-Lab GmbH in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with F8:F2:5A has a network interface built by G-Lab GmbH.

What is the OUI F8:F2:5A?

F8:F2:5A is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to G-Lab GmbH. It covers every address from F8:F2:5A:00:00:00 to F8:F2:5A:FF:FF:FF, or 16,777,216 addresses in total. It is also written F8-F2-5A.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in F8:F2:5A:00:00:00 that is F8:F2:5A — 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 G-Lab GmbH located?

G-Lab GmbH is listed at Schiffbaustrasse 10 Zurich CH CH 8005 in the IEEE OUI registry entry for F8:F2:5A. This is the address the organization registered with the IEEE, which may differ from its current operating address.

G-Lab GmbH

MAC address prefix F8:F2:5A is registered to G-Lab GmbH in the IEEE OUI registry. Any device whose MAC address begins with F8:F2:5A has a network interface built by G-Lab GmbH. 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 F8:F2:5A:00:00:00 to F8:F2:5A:FF:FF:FF.

OUI prefix: F8:F2:5A
Hyphen form: F8-F2-5A
MAC range: F8:F2:5A:00:00:00 – F8:F2:5A:FF:FF:FF
Addresses in block: 16,777,216
Organization: G-Lab GmbH
Address: Schiffbaustrasse 10 Zurich CH CH 8005
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 "G-Lab GmbH"
archived source →
2026-07-17Assigned to "G-Lab GmbH"

Nearby in the registry

The prefixes assigned immediately before and after F8:F2:5A:

FAQ

Which company owns MAC address prefix F8:F2:5A?: MAC address prefix F8:F2:5A is registered to G-Lab GmbH in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with F8:F2:5A has a network interface built by G-Lab GmbH.
What is the OUI F8:F2:5A?: F8:F2:5A is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to G-Lab GmbH. It covers every address from F8:F2:5A:00:00:00 to F8:F2:5A:FF:FF:FF, or 16,777,216 addresses in total. It is also written F8-F2-5A.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in F8:F2:5A:00:00:00 that is F8:F2:5A — 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 G-Lab GmbH located?: G-Lab GmbH is listed at Schiffbaustrasse 10 Zurich CH CH 8005 in the IEEE OUI registry entry for F8:F2:5A. This is the address the organization registered with the IEEE, which may differ from its current operating address.