Which company owns MAC address prefix F4:E5:78?

MAC address prefix F4:E5:78 is registered to LLC Proizvodstvennaya Kompania "TransService" in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with F4:E5:78 has a network interface built by LLC Proizvodstvennaya Kompania "TransService".

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in F4:E5:78:00:00:00 that is F4:E5:78 — 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.

How many MAC prefixes does LLC Proizvodstvennaya Kompania "TransService" own?

LLC Proizvodstvennaya Kompania "TransService" holds 3 OUI prefixes in the IEEE registry, of which F4:E5:78 is one. A device made by LLC Proizvodstvennaya Kompania "TransService" could carry a MAC address from any of them.

LLC Proizvodstvennaya Kompania "TransService"

MAC address prefix F4:E5:78 is registered to LLC Proizvodstvennaya Kompania "TransService" in the IEEE OUI registry. Any device whose MAC address begins with F4:E5:78 has a network interface built by LLC Proizvodstvennaya Kompania "TransService". 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 F4:E5:78:00:00:00 to F4:E5:78:FF:FF:FF.

OUI prefix: F4:E5:78
Hyphen form: F4-E5-78
MAC range: F4:E5:78:00:00:00 – F4:E5:78:FF:FF:FF
Addresses in block: 16,777,216
Organization: LLC Proizvodstvennaya Kompania "TransService"
Address: Ulitsa Podolskih Kursantov, build. 3, of. 133 Moscow Moscow RU 117545
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.

Other prefixes from LLC Proizvodstvennaya Kompania "TransService"

LLC Proizvodstvennaya Kompania "TransService" holds 3 OUI prefixes in total. A device with this exact prefix could just as well carry any of these:

Assignment history (2)

The IEEE registry publishes current state only — this is the change record we've kept since we started tracking it daily.

2020-08-05Assigned to "LLC Proizvodstvennaya Kompania "TransService""
archived source →
2026-07-17Assigned to "LLC Proizvodstvennaya Kompania "TransService""

Nearby in the registry

The prefixes assigned immediately before and after F4:E5:78:

FAQ

Which company owns MAC address prefix F4:E5:78?: MAC address prefix F4:E5:78 is registered to LLC Proizvodstvennaya Kompania "TransService" in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with F4:E5:78 has a network interface built by LLC Proizvodstvennaya Kompania "TransService".
What is the OUI F4:E5:78?: F4:E5:78 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to LLC Proizvodstvennaya Kompania "TransService". It covers every address from F4:E5:78:00:00:00 to F4:E5:78:FF:FF:FF, or 16,777,216 addresses in total. It is also written F4-E5-78.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in F4:E5:78:00:00:00 that is F4:E5:78 — 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 LLC Proizvodstvennaya Kompania "TransService" located?: LLC Proizvodstvennaya Kompania "TransService" is listed at Ulitsa Podolskih Kursantov, build. 3, of. 133 Moscow Moscow RU 117545 in the IEEE OUI registry entry for F4:E5:78. This is the address the organization registered with the IEEE, which may differ from its current operating address.
How many MAC prefixes does LLC Proizvodstvennaya Kompania "TransService" own?: LLC Proizvodstvennaya Kompania "TransService" holds 3 OUI prefixes in the IEEE registry, of which F4:E5:78 is one. A device made by LLC Proizvodstvennaya Kompania "TransService" could carry a MAC address from any of them.