Which company owns MAC address prefix 68:15:D3?

MAC address prefix 68:15:D3 is registered to R&G PLUS Sp. z o.o. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 68:15:D3 has a network interface built by R&G PLUS Sp. z o.o..

What is the OUI 68:15:D3?

68:15:D3 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to R&G PLUS Sp. z o.o.. It covers every address from 68:15:D3:00:00:00 to 68:15:D3:FF:FF:FF, or 16,777,216 addresses in total. It is also written 68-15-D3.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 68:15:D3:00:00:00 that is 68:15:D3 — 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 R&G PLUS Sp. z o.o. located?

R&G PLUS Sp. z o.o. is listed at ul. Traugutta 7 Mielec PL 39-300 in the IEEE OUI registry entry for 68:15:D3. This is the address the organization registered with the IEEE, which may differ from its current operating address.

R&G PLUS Sp. z o.o.

MAC address prefix 68:15:D3 is registered to R&G PLUS Sp. z o.o. in the IEEE OUI registry. Any device whose MAC address begins with 68:15:D3 has a network interface built by R&G PLUS Sp. z o.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 68:15:D3:00:00:00 to 68:15:D3:FF:FF:FF.

OUI prefix: 68:15:D3
Hyphen form: 68-15-D3
MAC range: 68:15:D3:00:00:00 – 68:15:D3:FF:FF:FF
Addresses in block: 16,777,216
Organization: R&G PLUS Sp. z o.o.
Address: ul. Traugutta 7 Mielec PL 39-300
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 "Zaklady Elektroniki i Mechaniki Precyzyjnej R&G S.A."
archived source →
2026-06-20Renamed from "Zaklady Elektroniki i Mechaniki Precyzyjnej R&G S.A." to "R&G PLUS Sp. z o.o."
archived source →
2026-07-17Assigned to "R&G PLUS Sp. z o.o."

Nearby in the registry

The prefixes assigned immediately before and after 68:15:D3:

FAQ

Which company owns MAC address prefix 68:15:D3?: MAC address prefix 68:15:D3 is registered to R&G PLUS Sp. z o.o. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 68:15:D3 has a network interface built by R&G PLUS Sp. z o.o..
What is the OUI 68:15:D3?: 68:15:D3 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to R&G PLUS Sp. z o.o.. It covers every address from 68:15:D3:00:00:00 to 68:15:D3:FF:FF:FF, or 16,777,216 addresses in total. It is also written 68-15-D3.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 68:15:D3:00:00:00 that is 68:15:D3 — 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 R&G PLUS Sp. z o.o. located?: R&G PLUS Sp. z o.o. is listed at ul. Traugutta 7 Mielec PL 39-300 in the IEEE OUI registry entry for 68:15:D3. This is the address the organization registered with the IEEE, which may differ from its current operating address.