Which company owns MAC address prefix 6C:D1:46?

MAC address prefix 6C:D1:46 is registered to FRAMOS GmbH in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 6C:D1:46 has a network interface built by FRAMOS GmbH.

What is the OUI 6C:D1:46?

6C:D1:46 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to FRAMOS GmbH. It covers every address from 6C:D1:46:00:00:00 to 6C:D1:46:FF:FF:FF, or 16,777,216 addresses in total. It is also written 6C-D1-46.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 6C:D1:46:00:00:00 that is 6C:D1:46 — 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 FRAMOS GmbH located?

FRAMOS GmbH is listed at Mehlbeerenstr. 2 Taufkirchen DE 82024 in the IEEE OUI registry entry for 6C:D1:46. This is the address the organization registered with the IEEE, which may differ from its current operating address.

FRAMOS GmbH

MAC address prefix 6C:D1:46 is registered to FRAMOS GmbH in the IEEE OUI registry. Any device whose MAC address begins with 6C:D1:46 has a network interface built by FRAMOS 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 6C:D1:46:00:00:00 to 6C:D1:46:FF:FF:FF.

OUI prefix: 6C:D1:46
Hyphen form: 6C-D1-46
MAC range: 6C:D1:46:00:00:00 – 6C:D1:46:FF:FF:FF
Addresses in block: 16,777,216
Organization: FRAMOS GmbH
Address: Mehlbeerenstr. 2 Taufkirchen DE 82024
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 "Smartek d.o.o."
archived source →
2019-07-04Renamed from "Smartek d.o.o." to "FRAMOS GmbH"
archived source →
2026-07-17Assigned to "FRAMOS GmbH"

Nearby in the registry

The prefixes assigned immediately before and after 6C:D1:46:

FAQ

Which company owns MAC address prefix 6C:D1:46?: MAC address prefix 6C:D1:46 is registered to FRAMOS GmbH in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 6C:D1:46 has a network interface built by FRAMOS GmbH.
What is the OUI 6C:D1:46?: 6C:D1:46 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to FRAMOS GmbH. It covers every address from 6C:D1:46:00:00:00 to 6C:D1:46:FF:FF:FF, or 16,777,216 addresses in total. It is also written 6C-D1-46.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 6C:D1:46:00:00:00 that is 6C:D1:46 — 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 FRAMOS GmbH located?: FRAMOS GmbH is listed at Mehlbeerenstr. 2 Taufkirchen DE 82024 in the IEEE OUI registry entry for 6C:D1:46. This is the address the organization registered with the IEEE, which may differ from its current operating address.