Which company owns MAC address prefix 20:B7:C0?

MAC address prefix 20:B7:C0 is registered to OMICRON electronics GmbH in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 20:B7:C0 has a network interface built by OMICRON electronics GmbH.

What is the OUI 20:B7:C0?

20:B7:C0 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to OMICRON electronics GmbH. It covers every address from 20:B7:C0:00:00:00 to 20:B7:C0:FF:FF:FF, or 16,777,216 addresses in total. It is also written 20-B7-C0.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 20:B7:C0:00:00:00 that is 20:B7:C0 — 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 OMICRON electronics GmbH located?

OMICRON electronics GmbH is listed at Oberes Ried 1 Klaus AT 6833 in the IEEE OUI registry entry for 20:B7:C0. This is the address the organization registered with the IEEE, which may differ from its current operating address.

OMICRON electronics GmbH

MAC address prefix 20:B7:C0 is registered to OMICRON electronics GmbH in the IEEE OUI registry. Any device whose MAC address begins with 20:B7:C0 has a network interface built by OMICRON electronics 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 20:B7:C0:00:00:00 to 20:B7:C0:FF:FF:FF.

OUI prefix: 20:B7:C0
Hyphen form: 20-B7-C0
MAC range: 20:B7:C0:00:00:00 – 20:B7:C0:FF:FF:FF
Addresses in block: 16,777,216
Organization: OMICRON electronics GmbH
Address: Oberes Ried 1 Klaus AT 6833
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 "OMICRON electronics GmbH"
archived source →
2026-07-17Assigned to "OMICRON electronics GmbH"

Nearby in the registry

The prefixes assigned immediately before and after 20:B7:C0:

FAQ

Which company owns MAC address prefix 20:B7:C0?: MAC address prefix 20:B7:C0 is registered to OMICRON electronics GmbH in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 20:B7:C0 has a network interface built by OMICRON electronics GmbH.
What is the OUI 20:B7:C0?: 20:B7:C0 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to OMICRON electronics GmbH. It covers every address from 20:B7:C0:00:00:00 to 20:B7:C0:FF:FF:FF, or 16,777,216 addresses in total. It is also written 20-B7-C0.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 20:B7:C0:00:00:00 that is 20:B7:C0 — 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 OMICRON electronics GmbH located?: OMICRON electronics GmbH is listed at Oberes Ried 1 Klaus AT 6833 in the IEEE OUI registry entry for 20:B7:C0. This is the address the organization registered with the IEEE, which may differ from its current operating address.