Which company owns MAC address prefix 74:2E:4F?

MAC address prefix 74:2E:4F is registered to Stienen Group in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 74:2E:4F has a network interface built by Stienen Group.

What is the OUI 74:2E:4F?

74:2E:4F is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Stienen Group. It covers every address from 74:2E:4F:00:00:00 to 74:2E:4F:FF:FF:FF, or 16,777,216 addresses in total. It is also written 74-2E-4F.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 74:2E:4F:00:00:00 that is 74:2E:4F — 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 Stienen Group located?

Stienen Group is listed at Mangaanstraat 9 Nederweert NL 6031RT in the IEEE OUI registry entry for 74:2E:4F. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Stienen Group

MAC address prefix 74:2E:4F is registered to Stienen Group in the IEEE OUI registry. Any device whose MAC address begins with 74:2E:4F has a network interface built by Stienen Group. 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 74:2E:4F:00:00:00 to 74:2E:4F:FF:FF:FF.

OUI prefix: 74:2E:4F
Hyphen form: 74-2E-4F
MAC range: 74:2E:4F:00:00:00 – 74:2E:4F:FF:FF:FF
Addresses in block: 16,777,216
Organization: Stienen Group
Address: Mangaanstraat 9 Nederweert NL 6031RT
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.

2024-02-15Assigned to "Stienen Group"
archived source →
2026-07-17Assigned to "Stienen Group"

Nearby in the registry

The prefixes assigned immediately before and after 74:2E:4F:

FAQ

Which company owns MAC address prefix 74:2E:4F?: MAC address prefix 74:2E:4F is registered to Stienen Group in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 74:2E:4F has a network interface built by Stienen Group.
What is the OUI 74:2E:4F?: 74:2E:4F is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Stienen Group. It covers every address from 74:2E:4F:00:00:00 to 74:2E:4F:FF:FF:FF, or 16,777,216 addresses in total. It is also written 74-2E-4F.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 74:2E:4F:00:00:00 that is 74:2E:4F — 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 Stienen Group located?: Stienen Group is listed at Mangaanstraat 9 Nederweert NL 6031RT in the IEEE OUI registry entry for 74:2E:4F. This is the address the organization registered with the IEEE, which may differ from its current operating address.