Which company owns MAC address prefix 54:47:D3?

MAC address prefix 54:47:D3 is registered to TSAT AS in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 54:47:D3 has a network interface built by TSAT AS.

What is the OUI 54:47:D3?

54:47:D3 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to TSAT AS. It covers every address from 54:47:D3:00:00:00 to 54:47:D3:FF:FF:FF, or 16,777,216 addresses in total. It is also written 54-47-D3.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 54:47:D3:00:00:00 that is 54:47:D3 — 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 TSAT AS located?

TSAT AS is listed at Martin Linges v 25 Fornebu NO 1364 in the IEEE OUI registry entry for 54:47:D3. This is the address the organization registered with the IEEE, which may differ from its current operating address.

TSAT AS

MAC address prefix 54:47:D3 is registered to TSAT AS in the IEEE OUI registry. Any device whose MAC address begins with 54:47:D3 has a network interface built by TSAT AS. 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 54:47:D3:00:00:00 to 54:47:D3:FF:FF:FF.

OUI prefix: 54:47:D3
Hyphen form: 54-47-D3
MAC range: 54:47:D3:00:00:00 – 54:47:D3:FF:FF:FF
Addresses in block: 16,777,216
Organization: TSAT AS
Address: Martin Linges v 25 Fornebu NO 1364
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.

2018-12-21Assigned to "TSAT AS"
archived source →
2026-07-17Assigned to "TSAT AS"

Nearby in the registry

The prefixes assigned immediately before and after 54:47:D3:

FAQ

Which company owns MAC address prefix 54:47:D3?: MAC address prefix 54:47:D3 is registered to TSAT AS in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 54:47:D3 has a network interface built by TSAT AS.
What is the OUI 54:47:D3?: 54:47:D3 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to TSAT AS. It covers every address from 54:47:D3:00:00:00 to 54:47:D3:FF:FF:FF, or 16,777,216 addresses in total. It is also written 54-47-D3.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 54:47:D3:00:00:00 that is 54:47:D3 — 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 TSAT AS located?: TSAT AS is listed at Martin Linges v 25 Fornebu NO 1364 in the IEEE OUI registry entry for 54:47:D3. This is the address the organization registered with the IEEE, which may differ from its current operating address.