Which company owns MAC address prefix 74:C7:6E?

MAC address prefix 74:C7:6E is registered to RTK-TECHNOLOGIES, LLC in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 74:C7:6E has a network interface built by RTK-TECHNOLOGIES, LLC.

What is the OUI 74:C7:6E?

74:C7:6E is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to RTK-TECHNOLOGIES, LLC. It covers every address from 74:C7:6E:00:00:00 to 74:C7:6E:FF:FF:FF, or 16,777,216 addresses in total. It is also written 74-C7-6E.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 74:C7:6E:00:00:00 that is 74:C7:6E — 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 RTK-TECHNOLOGIES, LLC located?

RTK-TECHNOLOGIES, LLC is listed at Yuzhnobutovskaya st., building 101, office 18 Moscow RU 117042 in the IEEE OUI registry entry for 74:C7:6E. This is the address the organization registered with the IEEE, which may differ from its current operating address.

RTK-TECHNOLOGIES, LLC

MAC address prefix 74:C7:6E is registered to RTK-TECHNOLOGIES, LLC in the IEEE OUI registry. Any device whose MAC address begins with 74:C7:6E has a network interface built by RTK-TECHNOLOGIES, 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 74:C7:6E:00:00:00 to 74:C7:6E:FF:FF:FF.

OUI prefix: 74:C7:6E
Hyphen form: 74-C7-6E
MAC range: 74:C7:6E:00:00:00 – 74:C7:6E:FF:FF:FF
Addresses in block: 16,777,216
Organization: RTK-TECHNOLOGIES, LLC
Address: Yuzhnobutovskaya st., building 101, office 18 Moscow RU 117042
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.

2023-07-11Assigned to "RTK-TECHNOLOGIES, LLC"
archived source →
2026-07-17Assigned to "RTK-TECHNOLOGIES, LLC"

Nearby in the registry

The prefixes assigned immediately before and after 74:C7:6E:

FAQ

Which company owns MAC address prefix 74:C7:6E?: MAC address prefix 74:C7:6E is registered to RTK-TECHNOLOGIES, LLC in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 74:C7:6E has a network interface built by RTK-TECHNOLOGIES, LLC.
What is the OUI 74:C7:6E?: 74:C7:6E is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to RTK-TECHNOLOGIES, LLC. It covers every address from 74:C7:6E:00:00:00 to 74:C7:6E:FF:FF:FF, or 16,777,216 addresses in total. It is also written 74-C7-6E.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 74:C7:6E:00:00:00 that is 74:C7:6E — 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 RTK-TECHNOLOGIES, LLC located?: RTK-TECHNOLOGIES, LLC is listed at Yuzhnobutovskaya st., building 101, office 18 Moscow RU 117042 in the IEEE OUI registry entry for 74:C7:6E. This is the address the organization registered with the IEEE, which may differ from its current operating address.