Which company owns MAC address prefix 94:CE:31?

MAC address prefix 94:CE:31 is registered to CTS Limited in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 94:CE:31 has a network interface built by CTS Limited.

What is the OUI 94:CE:31?

94:CE:31 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to CTS Limited. It covers every address from 94:CE:31:00:00:00 to 94:CE:31:FF:FF:FF, or 16,777,216 addresses in total. It is also written 94-CE-31.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 94:CE:31:00:00:00 that is 94:CE:31 — 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 CTS Limited located?

CTS Limited is listed at 1st district, 23D, 21 Moscow - RU 142784 in the IEEE OUI registry entry for 94:CE:31. This is the address the organization registered with the IEEE, which may differ from its current operating address.

CTS Limited

MAC address prefix 94:CE:31 is registered to CTS Limited in the IEEE OUI registry. Any device whose MAC address begins with 94:CE:31 has a network interface built by CTS Limited. 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 94:CE:31:00:00:00 to 94:CE:31:FF:FF:FF.

OUI prefix: 94:CE:31
Hyphen form: 94-CE-31
MAC range: 94:CE:31:00:00:00 – 94:CE:31:FF:FF:FF
Addresses in block: 16,777,216
Organization: CTS Limited
Address: 1st district, 23D, 21 Moscow - RU 142784
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 "CTS Limited"
archived source →
2026-07-17Assigned to "CTS Limited"

Nearby in the registry

The prefixes assigned immediately before and after 94:CE:31:

FAQ

Which company owns MAC address prefix 94:CE:31?: MAC address prefix 94:CE:31 is registered to CTS Limited in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 94:CE:31 has a network interface built by CTS Limited.
What is the OUI 94:CE:31?: 94:CE:31 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to CTS Limited. It covers every address from 94:CE:31:00:00:00 to 94:CE:31:FF:FF:FF, or 16,777,216 addresses in total. It is also written 94-CE-31.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 94:CE:31:00:00:00 that is 94:CE:31 — 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 CTS Limited located?: CTS Limited is listed at 1st district, 23D, 21 Moscow - RU 142784 in the IEEE OUI registry entry for 94:CE:31. This is the address the organization registered with the IEEE, which may differ from its current operating address.