Which company owns MAC address prefix C4:26:28?

MAC address prefix C4:26:28 is registered to Airo Wireless in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with C4:26:28 has a network interface built by Airo Wireless.

What is the OUI C4:26:28?

C4:26:28 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Airo Wireless. It covers every address from C4:26:28:00:00:00 to C4:26:28:FF:FF:FF, or 16,777,216 addresses in total. It is also written C4-26-28.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in C4:26:28:00:00:00 that is C4:26:28 — 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 Airo Wireless located?

Airo Wireless is listed at 12 Piedmont Center Atlanta GA US 30305 in the IEEE OUI registry entry for C4:26:28. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Airo Wireless

MAC address prefix C4:26:28 is registered to Airo Wireless in the IEEE OUI registry. Any device whose MAC address begins with C4:26:28 has a network interface built by Airo Wireless. 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 C4:26:28:00:00:00 to C4:26:28:FF:FF:FF.

OUI prefix: C4:26:28
Hyphen form: C4-26-28
MAC range: C4:26:28:00:00:00 – C4:26:28:FF:FF:FF
Addresses in block: 16,777,216
Organization: Airo Wireless
Address: 12 Piedmont Center Atlanta GA US 30305
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 "Airo Wireless"
archived source →
2026-07-17Assigned to "Airo Wireless"

Nearby in the registry

The prefixes assigned immediately before and after C4:26:28:

FAQ

Which company owns MAC address prefix C4:26:28?: MAC address prefix C4:26:28 is registered to Airo Wireless in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with C4:26:28 has a network interface built by Airo Wireless.
What is the OUI C4:26:28?: C4:26:28 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Airo Wireless. It covers every address from C4:26:28:00:00:00 to C4:26:28:FF:FF:FF, or 16,777,216 addresses in total. It is also written C4-26-28.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in C4:26:28:00:00:00 that is C4:26:28 — 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 Airo Wireless located?: Airo Wireless is listed at 12 Piedmont Center Atlanta GA US 30305 in the IEEE OUI registry entry for C4:26:28. This is the address the organization registered with the IEEE, which may differ from its current operating address.