Which company owns MAC address prefix EC:65:6E?

MAC address prefix EC:65:6E is registered to The Things Industries B.V. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with EC:65:6E has a network interface built by The Things Industries B.V..

What is the OUI EC:65:6E?

EC:65:6E is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to The Things Industries B.V.. It covers every address from EC:65:6E:00:00:00 to EC:65:6E:FF:FF:FF, or 16,777,216 addresses in total. It is also written EC-65-6E.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in EC:65:6E:00:00:00 that is EC:65:6E — 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 The Things Industries B.V. located?

The Things Industries B.V. is listed at Singel 542 Amsterdam Noord-Holland NL 1017 AZ in the IEEE OUI registry entry for EC:65:6E. This is the address the organization registered with the IEEE, which may differ from its current operating address.

The Things Industries B.V.

MAC address prefix EC:65:6E is registered to The Things Industries B.V. in the IEEE OUI registry. Any device whose MAC address begins with EC:65:6E has a network interface built by The Things Industries B.V.. 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 EC:65:6E:00:00:00 to EC:65:6E:FF:FF:FF.

OUI prefix: EC:65:6E
Hyphen form: EC-65-6E
MAC range: EC:65:6E:00:00:00 – EC:65:6E:FF:FF:FF
Addresses in block: 16,777,216
Organization: The Things Industries B.V.
Address: Singel 542 Amsterdam Noord-Holland NL 1017 AZ
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.

2022-07-11Assigned to "The Things Industries B.V."
archived source →
2026-07-17Assigned to "The Things Industries B.V."

Nearby in the registry

The prefixes assigned immediately before and after EC:65:6E:

FAQ

Which company owns MAC address prefix EC:65:6E?: MAC address prefix EC:65:6E is registered to The Things Industries B.V. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with EC:65:6E has a network interface built by The Things Industries B.V..
What is the OUI EC:65:6E?: EC:65:6E is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to The Things Industries B.V.. It covers every address from EC:65:6E:00:00:00 to EC:65:6E:FF:FF:FF, or 16,777,216 addresses in total. It is also written EC-65-6E.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in EC:65:6E:00:00:00 that is EC:65:6E — 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 The Things Industries B.V. located?: The Things Industries B.V. is listed at Singel 542 Amsterdam Noord-Holland NL 1017 AZ in the IEEE OUI registry entry for EC:65:6E. This is the address the organization registered with the IEEE, which may differ from its current operating address.