Which company owns MAC address prefix 20:8C:47?

MAC address prefix 20:8C:47 is registered to Tenstorrent Inc in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 20:8C:47 has a network interface built by Tenstorrent Inc.

What is the OUI 20:8C:47?

20:8C:47 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Tenstorrent Inc. It covers every address from 20:8C:47:00:00:00 to 20:8C:47:FF:FF:FF, or 16,777,216 addresses in total. It is also written 20-8C-47.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 20:8C:47:00:00:00 that is 20:8C:47 — 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 Tenstorrent Inc located?

Tenstorrent Inc is listed at 150 Ferrand Dr #901 Toronto ON CA M3C 3E5 in the IEEE OUI registry entry for 20:8C:47. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Tenstorrent Inc

MAC address prefix 20:8C:47 is registered to Tenstorrent Inc in the IEEE OUI registry. Any device whose MAC address begins with 20:8C:47 has a network interface built by Tenstorrent Inc. 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 20:8C:47:00:00:00 to 20:8C:47:FF:FF:FF.

OUI prefix: 20:8C:47
Hyphen form: 20-8C-47
MAC range: 20:8C:47:00:00:00 – 20:8C:47:FF:FF:FF
Addresses in block: 16,777,216
Organization: Tenstorrent Inc
Address: 150 Ferrand Dr #901 Toronto ON CA M3C 3E5
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 "Tenstorrent Inc"
archived source →
2026-07-17Assigned to "Tenstorrent Inc"

Nearby in the registry

The prefixes assigned immediately before and after 20:8C:47:

FAQ

Which company owns MAC address prefix 20:8C:47?: MAC address prefix 20:8C:47 is registered to Tenstorrent Inc in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 20:8C:47 has a network interface built by Tenstorrent Inc.
What is the OUI 20:8C:47?: 20:8C:47 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Tenstorrent Inc. It covers every address from 20:8C:47:00:00:00 to 20:8C:47:FF:FF:FF, or 16,777,216 addresses in total. It is also written 20-8C-47.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 20:8C:47:00:00:00 that is 20:8C:47 — 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 Tenstorrent Inc located?: Tenstorrent Inc is listed at 150 Ferrand Dr #901 Toronto ON CA M3C 3E5 in the IEEE OUI registry entry for 20:8C:47. This is the address the organization registered with the IEEE, which may differ from its current operating address.