Which company owns MAC address prefix B4:7D:76?

MAC address prefix B4:7D:76 is registered to KNS Group LLC in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with B4:7D:76 has a network interface built by KNS Group LLC.

What is the OUI B4:7D:76?

B4:7D:76 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to KNS Group LLC. It covers every address from B4:7D:76:00:00:00 to B4:7D:76:FF:FF:FF, or 16,777,216 addresses in total. It is also written B4-7D-76.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in B4:7D:76:00:00:00 that is B4:7D:76 — 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 KNS Group LLC located?

KNS Group LLC is listed at Room 4, Office IV, Floor 4 Rochdelskaya street, 15, b.15 Moscow, 123376 Russia Moscow RU 123376 in the IEEE OUI registry entry for B4:7D:76. This is the address the organization registered with the IEEE, which may differ from its current operating address.

KNS Group LLC

MAC address prefix B4:7D:76 is registered to KNS Group LLC in the IEEE OUI registry. Any device whose MAC address begins with B4:7D:76 has a network interface built by KNS Group 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 B4:7D:76:00:00:00 to B4:7D:76:FF:FF:FF.

OUI prefix: B4:7D:76
Hyphen form: B4-7D-76
MAC range: B4:7D:76:00:00:00 – B4:7D:76:FF:FF:FF
Addresses in block: 16,777,216
Organization: KNS Group LLC
Address: Room 4, Office IV, Floor 4 Rochdelskaya street, 15, b.15 Moscow, 123376 Russia Moscow RU 123376
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 "KNS Group LLC"
archived source →
2026-07-17Assigned to "KNS Group LLC"

Nearby in the registry

The prefixes assigned immediately before and after B4:7D:76:

FAQ

Which company owns MAC address prefix B4:7D:76?: MAC address prefix B4:7D:76 is registered to KNS Group LLC in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with B4:7D:76 has a network interface built by KNS Group LLC.
What is the OUI B4:7D:76?: B4:7D:76 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to KNS Group LLC. It covers every address from B4:7D:76:00:00:00 to B4:7D:76:FF:FF:FF, or 16,777,216 addresses in total. It is also written B4-7D-76.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in B4:7D:76:00:00:00 that is B4:7D:76 — 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 KNS Group LLC located?: KNS Group LLC is listed at Room 4, Office IV, Floor 4 Rochdelskaya street, 15, b.15 Moscow, 123376 Russia Moscow RU 123376 in the IEEE OUI registry entry for B4:7D:76. This is the address the organization registered with the IEEE, which may differ from its current operating address.