Which company owns MAC address prefix 74:AD:45?

MAC address prefix 74:AD:45 is registered to Valeo Auto- Electric Hungary Ltd in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 74:AD:45 has a network interface built by Valeo Auto- Electric Hungary Ltd.

What is the OUI 74:AD:45?

74:AD:45 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Valeo Auto- Electric Hungary Ltd. It covers every address from 74:AD:45:00:00:00 to 74:AD:45:FF:FF:FF, or 16,777,216 addresses in total. It is also written 74-AD-45.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 74:AD:45:00:00:00 that is 74:AD:45 — 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 Valeo Auto- Electric Hungary Ltd located?

Valeo Auto- Electric Hungary Ltd is listed at Piramis street 1 Veszprém HU 8200 in the IEEE OUI registry entry for 74:AD:45. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Valeo Auto- Electric Hungary Ltd

MAC address prefix 74:AD:45 is registered to Valeo Auto- Electric Hungary Ltd in the IEEE OUI registry. Any device whose MAC address begins with 74:AD:45 has a network interface built by Valeo Auto- Electric Hungary Ltd. 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:AD:45:00:00:00 to 74:AD:45:FF:FF:FF.

OUI prefix: 74:AD:45
Hyphen form: 74-AD-45
MAC range: 74:AD:45:00:00:00 – 74:AD:45:FF:FF:FF
Addresses in block: 16,777,216
Organization: Valeo Auto- Electric Hungary Ltd
Address: Piramis street 1 Veszprém HU 8200
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.

2024-06-23Assigned to "Valeo Auto- Electric Hungary Ltd"
archived source →
2026-07-17Assigned to "Valeo Auto- Electric Hungary Ltd"

Nearby in the registry

The prefixes assigned immediately before and after 74:AD:45:

FAQ

Which company owns MAC address prefix 74:AD:45?: MAC address prefix 74:AD:45 is registered to Valeo Auto- Electric Hungary Ltd in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 74:AD:45 has a network interface built by Valeo Auto- Electric Hungary Ltd.
What is the OUI 74:AD:45?: 74:AD:45 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Valeo Auto- Electric Hungary Ltd. It covers every address from 74:AD:45:00:00:00 to 74:AD:45:FF:FF:FF, or 16,777,216 addresses in total. It is also written 74-AD-45.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 74:AD:45:00:00:00 that is 74:AD:45 — 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 Valeo Auto- Electric Hungary Ltd located?: Valeo Auto- Electric Hungary Ltd is listed at Piramis street 1 Veszprém HU 8200 in the IEEE OUI registry entry for 74:AD:45. This is the address the organization registered with the IEEE, which may differ from its current operating address.