Which company owns MAC address prefix 74:66:30?

MAC address prefix 74:66:30 is registered to T:mi Ytti in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 74:66:30 has a network interface built by T:mi Ytti.

What is the OUI 74:66:30?

74:66:30 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to T:mi Ytti. It covers every address from 74:66:30:00:00:00 to 74:66:30:FF:FF:FF, or 16,777,216 addresses in total. It is also written 74-66-30.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 74:66:30:00:00:00 that is 74:66:30 — 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 T:mi Ytti located?

T:mi Ytti is listed at Messitytonkatu 8 C 39 Helsinki n/a FI 00180 in the IEEE OUI registry entry for 74:66:30. This is the address the organization registered with the IEEE, which may differ from its current operating address.

T:mi Ytti

MAC address prefix 74:66:30 is registered to T:mi Ytti in the IEEE OUI registry. Any device whose MAC address begins with 74:66:30 has a network interface built by T:mi Ytti. 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 74:66:30:00:00:00 to 74:66:30:FF:FF:FF.

OUI prefix: 74:66:30
Hyphen form: 74-66-30
MAC range: 74:66:30:00:00:00 – 74:66:30:FF:FF:FF
Addresses in block: 16,777,216
Organization: T:mi Ytti
Address: Messitytonkatu 8 C 39 Helsinki n/a FI 00180
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 "T:mi Ytti"
archived source →
2026-07-17Assigned to "T:mi Ytti"

Nearby in the registry

The prefixes assigned immediately before and after 74:66:30:

FAQ

Which company owns MAC address prefix 74:66:30?: MAC address prefix 74:66:30 is registered to T:mi Ytti in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 74:66:30 has a network interface built by T:mi Ytti.
What is the OUI 74:66:30?: 74:66:30 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to T:mi Ytti. It covers every address from 74:66:30:00:00:00 to 74:66:30:FF:FF:FF, or 16,777,216 addresses in total. It is also written 74-66-30.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 74:66:30:00:00:00 that is 74:66:30 — 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 T:mi Ytti located?: T:mi Ytti is listed at Messitytonkatu 8 C 39 Helsinki n/a FI 00180 in the IEEE OUI registry entry for 74:66:30. This is the address the organization registered with the IEEE, which may differ from its current operating address.