Which company owns MAC address prefix A4:AE:9A?

MAC address prefix A4:AE:9A is registered to Maestro Wireless Solutions ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with A4:AE:9A has a network interface built by Maestro Wireless Solutions ltd..

What is the OUI A4:AE:9A?

A4:AE:9A is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Maestro Wireless Solutions ltd.. It covers every address from A4:AE:9A:00:00:00 to A4:AE:9A:FF:FF:FF, or 16,777,216 addresses in total. It is also written A4-AE-9A.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in A4:AE:9A:00:00:00 that is A4:AE:9A — 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 Maestro Wireless Solutions ltd. located?

Maestro Wireless Solutions ltd. is listed at 3603-9, 36/F Sai Ying Pun HK in the IEEE OUI registry entry for A4:AE:9A. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Maestro Wireless Solutions ltd.

MAC address prefix A4:AE:9A is registered to Maestro Wireless Solutions ltd. in the IEEE OUI registry. Any device whose MAC address begins with A4:AE:9A has a network interface built by Maestro Wireless Solutions 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 A4:AE:9A:00:00:00 to A4:AE:9A:FF:FF:FF.

OUI prefix: A4:AE:9A
Hyphen form: A4-AE-9A
MAC range: A4:AE:9A:00:00:00 – A4:AE:9A:FF:FF:FF
Addresses in block: 16,777,216
Organization: Maestro Wireless Solutions ltd.
Address: 3603-9, 36/F Sai Ying Pun HK
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 "Maestro Wireless Solutions ltd."
archived source →
2026-07-17Assigned to "Maestro Wireless Solutions ltd."

Nearby in the registry

The prefixes assigned immediately before and after A4:AE:9A:

FAQ

Which company owns MAC address prefix A4:AE:9A?: MAC address prefix A4:AE:9A is registered to Maestro Wireless Solutions ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with A4:AE:9A has a network interface built by Maestro Wireless Solutions ltd..
What is the OUI A4:AE:9A?: A4:AE:9A is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Maestro Wireless Solutions ltd.. It covers every address from A4:AE:9A:00:00:00 to A4:AE:9A:FF:FF:FF, or 16,777,216 addresses in total. It is also written A4-AE-9A.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in A4:AE:9A:00:00:00 that is A4:AE:9A — 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 Maestro Wireless Solutions ltd. located?: Maestro Wireless Solutions ltd. is listed at 3603-9, 36/F Sai Ying Pun HK in the IEEE OUI registry entry for A4:AE:9A. This is the address the organization registered with the IEEE, which may differ from its current operating address.