Which company owns MAC address prefix 84:85:53?

MAC address prefix 84:85:53 is registered to Biznes Systema Telecom, LLC in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 84:85:53 has a network interface built by Biznes Systema Telecom, LLC.

What is the OUI 84:85:53?

84:85:53 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Biznes Systema Telecom, LLC. It covers every address from 84:85:53:00:00:00 to 84:85:53:FF:FF:FF, or 16,777,216 addresses in total. It is also written 84-85-53.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 84:85:53:00:00:00 that is 84:85:53 — 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 Biznes Systema Telecom, LLC located?

Biznes Systema Telecom, LLC is listed at room XXII/1, fl 3, block 3, 6 Barklaya street, Moscow, 121087, Russia Moscow RU 121087 in the IEEE OUI registry entry for 84:85:53. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Biznes Systema Telecom, LLC

MAC address prefix 84:85:53 is registered to Biznes Systema Telecom, LLC in the IEEE OUI registry. Any device whose MAC address begins with 84:85:53 has a network interface built by Biznes Systema Telecom, LLC. 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 84:85:53:00:00:00 to 84:85:53:FF:FF:FF.

OUI prefix: 84:85:53
Hyphen form: 84-85-53
MAC range: 84:85:53:00:00:00 – 84:85:53:FF:FF:FF
Addresses in block: 16,777,216
Organization: Biznes Systema Telecom, LLC
Address: room XXII/1, fl 3, block 3, 6 Barklaya street, Moscow, 121087, Russia Moscow RU 121087
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.

2022-07-11Assigned to "Biznes Systema Telecom, LLC"
archived source →
2026-07-17Assigned to "Biznes Systema Telecom, LLC"

Nearby in the registry

The prefixes assigned immediately before and after 84:85:53:

FAQ

Which company owns MAC address prefix 84:85:53?: MAC address prefix 84:85:53 is registered to Biznes Systema Telecom, LLC in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 84:85:53 has a network interface built by Biznes Systema Telecom, LLC.
What is the OUI 84:85:53?: 84:85:53 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Biznes Systema Telecom, LLC. It covers every address from 84:85:53:00:00:00 to 84:85:53:FF:FF:FF, or 16,777,216 addresses in total. It is also written 84-85-53.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 84:85:53:00:00:00 that is 84:85:53 — 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 Biznes Systema Telecom, LLC located?: Biznes Systema Telecom, LLC is listed at room XXII/1, fl 3, block 3, 6 Barklaya street, Moscow, 121087, Russia Moscow RU 121087 in the IEEE OUI registry entry for 84:85:53. This is the address the organization registered with the IEEE, which may differ from its current operating address.