Which company owns MAC address prefix 40:C0:EE?

MAC address prefix 40:C0:EE is registered to 365mesh Pty Ltd in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 40:C0:EE has a network interface built by 365mesh Pty Ltd.

What is the OUI 40:C0:EE?

40:C0:EE is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to 365mesh Pty Ltd. It covers every address from 40:C0:EE:00:00:00 to 40:C0:EE:FF:FF:FF, or 16,777,216 addresses in total. It is also written 40-C0-EE.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 40:C0:EE:00:00:00 that is 40:C0:EE — 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 365mesh Pty Ltd located?

365mesh Pty Ltd is listed at 502/32 Delhi Road North Ryde NSW AU 2113 in the IEEE OUI registry entry for 40:C0:EE. This is the address the organization registered with the IEEE, which may differ from its current operating address.

365mesh Pty Ltd

MAC address prefix 40:C0:EE is registered to 365mesh Pty Ltd in the IEEE OUI registry. Any device whose MAC address begins with 40:C0:EE has a network interface built by 365mesh Pty 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 40:C0:EE:00:00:00 to 40:C0:EE:FF:FF:FF.

OUI prefix: 40:C0:EE
Hyphen form: 40-C0-EE
MAC range: 40:C0:EE:00:00:00 – 40:C0:EE:FF:FF:FF
Addresses in block: 16,777,216
Organization: 365mesh Pty Ltd
Address: 502/32 Delhi Road North Ryde NSW AU 2113
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.

2024-02-15Assigned to "365mesh Pty Ltd"
archived source →
2026-07-17Assigned to "365mesh Pty Ltd"

Nearby in the registry

The prefixes assigned immediately before and after 40:C0:EE:

FAQ

Which company owns MAC address prefix 40:C0:EE?: MAC address prefix 40:C0:EE is registered to 365mesh Pty Ltd in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 40:C0:EE has a network interface built by 365mesh Pty Ltd.
What is the OUI 40:C0:EE?: 40:C0:EE is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to 365mesh Pty Ltd. It covers every address from 40:C0:EE:00:00:00 to 40:C0:EE:FF:FF:FF, or 16,777,216 addresses in total. It is also written 40-C0-EE.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 40:C0:EE:00:00:00 that is 40:C0:EE — 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 365mesh Pty Ltd located?: 365mesh Pty Ltd is listed at 502/32 Delhi Road North Ryde NSW AU 2113 in the IEEE OUI registry entry for 40:C0:EE. This is the address the organization registered with the IEEE, which may differ from its current operating address.