Which company owns MAC address prefix A0:E9:22?

MAC address prefix A0:E9:22 is registered to Optiemus Electronics Limited in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with A0:E9:22 has a network interface built by Optiemus Electronics Limited.

What is the OUI A0:E9:22?

A0:E9:22 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Optiemus Electronics Limited. It covers every address from A0:E9:22:00:00:00 to A0:E9:22:FF:FF:FF, or 16,777,216 addresses in total. It is also written A0-E9-22.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in A0:E9:22:00:00:00 that is A0:E9:22 — 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 Optiemus Electronics Limited located?

Optiemus Electronics Limited is listed at A-7, Sector-65 Noida Gautam Buddha Nagar IN 201309 in the IEEE OUI registry entry for A0:E9:22. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Optiemus Electronics Limited

MAC address prefix A0:E9:22 is registered to Optiemus Electronics Limited in the IEEE OUI registry. Any device whose MAC address begins with A0:E9:22 has a network interface built by Optiemus Electronics 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 A0:E9:22:00:00:00 to A0:E9:22:FF:FF:FF.

OUI prefix: A0:E9:22
Hyphen form: A0-E9-22
MAC range: A0:E9:22:00:00:00 – A0:E9:22:FF:FF:FF
Addresses in block: 16,777,216
Organization: Optiemus Electronics Limited
Address: A-7, Sector-65 Noida Gautam Buddha Nagar IN 201309
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 (1)

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

2026-08-21Assigned to "Optiemus Electronics Limited"

Nearby in the registry

The prefixes assigned immediately before and after A0:E9:22:

FAQ

Which company owns MAC address prefix A0:E9:22?: MAC address prefix A0:E9:22 is registered to Optiemus Electronics Limited in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with A0:E9:22 has a network interface built by Optiemus Electronics Limited.
What is the OUI A0:E9:22?: A0:E9:22 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Optiemus Electronics Limited. It covers every address from A0:E9:22:00:00:00 to A0:E9:22:FF:FF:FF, or 16,777,216 addresses in total. It is also written A0-E9-22.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in A0:E9:22:00:00:00 that is A0:E9:22 — 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 Optiemus Electronics Limited located?: Optiemus Electronics Limited is listed at A-7, Sector-65 Noida Gautam Buddha Nagar IN 201309 in the IEEE OUI registry entry for A0:E9:22. This is the address the organization registered with the IEEE, which may differ from its current operating address.