Which company owns MAC address prefix 54:05:46?

MAC address prefix 54:05:46 is registered to Spintly Inc in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 54:05:46 has a network interface built by Spintly Inc.

What is the OUI 54:05:46?

54:05:46 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Spintly Inc. It covers every address from 54:05:46:00:00:00 to 54:05:46:FF:FF:FF, or 16,777,216 addresses in total. It is also written 54-05-46.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 54:05:46:00:00:00 that is 54:05:46 — 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 Spintly Inc located?

Spintly Inc is listed at 691 S Milpitas Blvd Suite 217 Milpitas CA US 95035 in the IEEE OUI registry entry for 54:05:46. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Spintly Inc

MAC address prefix 54:05:46 is registered to Spintly Inc in the IEEE OUI registry. Any device whose MAC address begins with 54:05:46 has a network interface built by Spintly 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 54:05:46:00:00:00 to 54:05:46:FF:FF:FF.

OUI prefix: 54:05:46
Hyphen form: 54-05-46
MAC range: 54:05:46:00:00:00 – 54:05:46:FF:FF:FF
Addresses in block: 16,777,216
Organization: Spintly Inc
Address: 691 S Milpitas Blvd Suite 217 Milpitas CA US 95035
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 (1)

The IEEE registry publishes current state only — this is the change record we've kept since we started tracking it daily.

2026-09-13Assigned to "Spintly Inc"

Nearby in the registry

The prefixes assigned immediately before and after 54:05:46:

FAQ

Which company owns MAC address prefix 54:05:46?: MAC address prefix 54:05:46 is registered to Spintly Inc in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 54:05:46 has a network interface built by Spintly Inc.
What is the OUI 54:05:46?: 54:05:46 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Spintly Inc. It covers every address from 54:05:46:00:00:00 to 54:05:46:FF:FF:FF, or 16,777,216 addresses in total. It is also written 54-05-46.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 54:05:46:00:00:00 that is 54:05:46 — 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 Spintly Inc located?: Spintly Inc is listed at 691 S Milpitas Blvd Suite 217 Milpitas CA US 95035 in the IEEE OUI registry entry for 54:05:46. This is the address the organization registered with the IEEE, which may differ from its current operating address.