Which company owns MAC address prefix F0:26:4C?

MAC address prefix F0:26:4C is registered to Sigrist-Photometer AG in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with F0:26:4C has a network interface built by Sigrist-Photometer AG.

What is the OUI F0:26:4C?

F0:26:4C is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Sigrist-Photometer AG. It covers every address from F0:26:4C:00:00:00 to F0:26:4C:FF:FF:FF, or 16,777,216 addresses in total. It is also written F0-26-4C.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in F0:26:4C:00:00:00 that is F0:26:4C — 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 Sigrist-Photometer AG located?

Sigrist-Photometer AG is listed at Hofurlistrasse 1 Ennetbürgen CH 6373 in the IEEE OUI registry entry for F0:26:4C. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Sigrist-Photometer AG

MAC address prefix F0:26:4C is registered to Sigrist-Photometer AG in the IEEE OUI registry. Any device whose MAC address begins with F0:26:4C has a network interface built by Sigrist-Photometer AG. 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 F0:26:4C:00:00:00 to F0:26:4C:FF:FF:FF.

OUI prefix: F0:26:4C
Hyphen form: F0-26-4C
MAC range: F0:26:4C:00:00:00 – F0:26:4C:FF:FF:FF
Addresses in block: 16,777,216
Organization: Sigrist-Photometer AG
Address: Hofurlistrasse 1 Ennetbürgen CH 6373
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 (3)

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 "Dr. Sigrist AG"
archived source →
2019-08-04Renamed from "Dr. Sigrist AG" to "Sigrist-Photometer AG"
archived source →
2026-07-17Assigned to "Sigrist-Photometer AG"

Nearby in the registry

The prefixes assigned immediately before and after F0:26:4C:

FAQ

Which company owns MAC address prefix F0:26:4C?: MAC address prefix F0:26:4C is registered to Sigrist-Photometer AG in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with F0:26:4C has a network interface built by Sigrist-Photometer AG.
What is the OUI F0:26:4C?: F0:26:4C is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Sigrist-Photometer AG. It covers every address from F0:26:4C:00:00:00 to F0:26:4C:FF:FF:FF, or 16,777,216 addresses in total. It is also written F0-26-4C.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in F0:26:4C:00:00:00 that is F0:26:4C — 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 Sigrist-Photometer AG located?: Sigrist-Photometer AG is listed at Hofurlistrasse 1 Ennetbürgen CH 6373 in the IEEE OUI registry entry for F0:26:4C. This is the address the organization registered with the IEEE, which may differ from its current operating address.