Which company owns MAC address prefix A0:B4:BF?

MAC address prefix A0:B4:BF is registered to InfiNet LLC in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with A0:B4:BF has a network interface built by InfiNet LLC.

What is the OUI A0:B4:BF?

A0:B4:BF is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to InfiNet LLC. It covers every address from A0:B4:BF:00:00:00 to A0:B4:BF:FF:FF:FF, or 16,777,216 addresses in total. It is also written A0-B4-BF.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in A0:B4:BF:00:00:00 that is A0:B4:BF — 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 InfiNet LLC located?

InfiNet LLC is listed at Office 425, 69/75 Vavilova str. Moscow\ RU 117335 in the IEEE OUI registry entry for A0:B4:BF. This is the address the organization registered with the IEEE, which may differ from its current operating address.

How many MAC prefixes does InfiNet LLC own?

InfiNet LLC holds 2 OUI prefixes in the IEEE registry, of which A0:B4:BF is one. A device made by InfiNet LLC could carry a MAC address from any of them.

InfiNet LLC

MAC address prefix A0:B4:BF is registered to InfiNet LLC in the IEEE OUI registry. Any device whose MAC address begins with A0:B4:BF has a network interface built by InfiNet 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 A0:B4:BF:00:00:00 to A0:B4:BF:FF:FF:FF.

OUI prefix: A0:B4:BF
Hyphen form: A0-B4-BF
MAC range: A0:B4:BF:00:00:00 – A0:B4:BF:FF:FF:FF
Addresses in block: 16,777,216
Organization: InfiNet LLC
Address: Office 425, 69/75 Vavilova str. Moscow\ RU 117335
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 InfiNet LLC

InfiNet LLC holds 2 OUI prefixes in total. A device with this exact prefix could just as well carry any of these:

00:04:35

Assignment history (1)

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

2026-07-17Assigned to "InfiNet LLC"

Nearby in the registry

The prefixes assigned immediately before and after A0:B4:BF:

FAQ

Which company owns MAC address prefix A0:B4:BF?: MAC address prefix A0:B4:BF is registered to InfiNet LLC in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with A0:B4:BF has a network interface built by InfiNet LLC.
What is the OUI A0:B4:BF?: A0:B4:BF is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to InfiNet LLC. It covers every address from A0:B4:BF:00:00:00 to A0:B4:BF:FF:FF:FF, or 16,777,216 addresses in total. It is also written A0-B4-BF.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in A0:B4:BF:00:00:00 that is A0:B4:BF — 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 InfiNet LLC located?: InfiNet LLC is listed at Office 425, 69/75 Vavilova str. Moscow\ RU 117335 in the IEEE OUI registry entry for A0:B4:BF. This is the address the organization registered with the IEEE, which may differ from its current operating address.
How many MAC prefixes does InfiNet LLC own?: InfiNet LLC holds 2 OUI prefixes in the IEEE registry, of which A0:B4:BF is one. A device made by InfiNet LLC could carry a MAC address from any of them.