Which company owns MAC address prefix 00:1E:CB?

MAC address prefix 00:1E:CB is registered to "RPC "Energoautomatika" Ltd in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 00:1E:CB has a network interface built by "RPC "Energoautomatika" Ltd.

What is the OUI 00:1E:CB?

00:1E:CB is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to "RPC "Energoautomatika" Ltd. It covers every address from 00:1E:CB:00:00:00 to 00:1E:CB:FF:FF:FF, or 16,777,216 addresses in total. It is also written 00-1E-CB.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 00:1E:CB:00:00:00 that is 00:1E:CB — 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 "RPC "Energoautomatika" Ltd located?

"RPC "Energoautomatika" Ltd is listed at Krasnokazarmennaya st., 13/1 Moscow RU 111250 in the IEEE OUI registry entry for 00:1E:CB. This is the address the organization registered with the IEEE, which may differ from its current operating address.

"RPC "Energoautomatika" Ltd

MAC address prefix 00:1E:CB is registered to "RPC "Energoautomatika" Ltd in the IEEE OUI registry. Any device whose MAC address begins with 00:1E:CB has a network interface built by "RPC "Energoautomatika" Ltd. 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 00:1E:CB:00:00:00 to 00:1E:CB:FF:FF:FF.

OUI prefix: 00:1E:CB
Hyphen form: 00-1E-CB
MAC range: 00:1E:CB:00:00:00 – 00:1E:CB:FF:FF:FF
Addresses in block: 16,777,216
Organization: "RPC "Energoautomatika" Ltd
Address: Krasnokazarmennaya st., 13/1 Moscow RU 111250
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.

2016-07-29Assigned to ""RPC "Energoautomatika" Ltd"
archived source →
2026-07-17Assigned to ""RPC "Energoautomatika" Ltd"

Nearby in the registry

The prefixes assigned immediately before and after 00:1E:CB:

FAQ

Which company owns MAC address prefix 00:1E:CB?: MAC address prefix 00:1E:CB is registered to "RPC "Energoautomatika" Ltd in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 00:1E:CB has a network interface built by "RPC "Energoautomatika" Ltd.
What is the OUI 00:1E:CB?: 00:1E:CB is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to "RPC "Energoautomatika" Ltd. It covers every address from 00:1E:CB:00:00:00 to 00:1E:CB:FF:FF:FF, or 16,777,216 addresses in total. It is also written 00-1E-CB.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 00:1E:CB:00:00:00 that is 00:1E:CB — 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 "RPC "Energoautomatika" Ltd located?: "RPC "Energoautomatika" Ltd is listed at Krasnokazarmennaya st., 13/1 Moscow RU 111250 in the IEEE OUI registry entry for 00:1E:CB. This is the address the organization registered with the IEEE, which may differ from its current operating address.