Which company owns MAC address prefix 7C:97:63?

MAC address prefix 7C:97:63 is registered to Openmatics s.r.o. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 7C:97:63 has a network interface built by Openmatics s.r.o..

What is the OUI 7C:97:63?

7C:97:63 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Openmatics s.r.o.. It covers every address from 7C:97:63:00:00:00 to 7C:97:63:FF:FF:FF, or 16,777,216 addresses in total. It is also written 7C-97-63.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 7C:97:63:00:00:00 that is 7C:97:63 — 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 Openmatics s.r.o. located?

Openmatics s.r.o. is listed at Poděbradova 2842/1 Pilsen Tschechien CZ 30100 in the IEEE OUI registry entry for 7C:97:63. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Openmatics s.r.o.

MAC address prefix 7C:97:63 is registered to Openmatics s.r.o. in the IEEE OUI registry. Any device whose MAC address begins with 7C:97:63 has a network interface built by Openmatics s.r.o.. 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 7C:97:63:00:00:00 to 7C:97:63:FF:FF:FF.

OUI prefix: 7C:97:63
Hyphen form: 7C-97-63
MAC range: 7C:97:63:00:00:00 – 7C:97:63:FF:FF:FF
Addresses in block: 16,777,216
Organization: Openmatics s.r.o.
Address: Poděbradova 2842/1 Pilsen Tschechien CZ 30100
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 "Openmatics s.r.o."
archived source →
2026-07-17Assigned to "Openmatics s.r.o."

Nearby in the registry

The prefixes assigned immediately before and after 7C:97:63:

FAQ

Which company owns MAC address prefix 7C:97:63?: MAC address prefix 7C:97:63 is registered to Openmatics s.r.o. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 7C:97:63 has a network interface built by Openmatics s.r.o..
What is the OUI 7C:97:63?: 7C:97:63 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Openmatics s.r.o.. It covers every address from 7C:97:63:00:00:00 to 7C:97:63:FF:FF:FF, or 16,777,216 addresses in total. It is also written 7C-97-63.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 7C:97:63:00:00:00 that is 7C:97:63 — 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 Openmatics s.r.o. located?: Openmatics s.r.o. is listed at Poděbradova 2842/1 Pilsen Tschechien CZ 30100 in the IEEE OUI registry entry for 7C:97:63. This is the address the organization registered with the IEEE, which may differ from its current operating address.