Which company owns MAC address prefix 58:FC:C6?

MAC address prefix 58:FC:C6 is registered to TOZO INC in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 58:FC:C6 has a network interface built by TOZO INC.

What is the OUI 58:FC:C6?

58:FC:C6 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to TOZO INC. It covers every address from 58:FC:C6:00:00:00 to 58:FC:C6:FF:FF:FF, or 16,777,216 addresses in total. It is also written 58-FC-C6.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 58:FC:C6:00:00:00 that is 58:FC:C6 — 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 TOZO INC located?

TOZO INC is listed at 1546 NW 56TH ST # 743 SEATTLE WA US 98107-5209 in the IEEE OUI registry entry for 58:FC:C6. This is the address the organization registered with the IEEE, which may differ from its current operating address.

How many MAC prefixes does TOZO INC own?

TOZO INC holds 2 OUI prefixes in the IEEE registry, of which 58:FC:C6 is one. A device made by TOZO INC could carry a MAC address from any of them.

TOZO INC

MAC address prefix 58:FC:C6 is registered to TOZO INC in the IEEE OUI registry. Any device whose MAC address begins with 58:FC:C6 has a network interface built by TOZO 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 58:FC:C6:00:00:00 to 58:FC:C6:FF:FF:FF.

OUI prefix: 58:FC:C6
Hyphen form: 58-FC-C6
MAC range: 58:FC:C6:00:00:00 – 58:FC:C6:FF:FF:FF
Addresses in block: 16,777,216
Organization: TOZO INC
Address: 1546 NW 56TH ST # 743 SEATTLE WA US 98107-5209
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.

Other prefixes from TOZO INC

TOZO INC holds 2 OUI prefixes in total. A device with this exact prefix could just as well carry any of these:

94:4B:F8

Assignment history (1)

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

2026-07-17Assigned to "TOZO INC"

Nearby in the registry

The prefixes assigned immediately before and after 58:FC:C6:

FAQ

Which company owns MAC address prefix 58:FC:C6?: MAC address prefix 58:FC:C6 is registered to TOZO INC in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 58:FC:C6 has a network interface built by TOZO INC.
What is the OUI 58:FC:C6?: 58:FC:C6 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to TOZO INC. It covers every address from 58:FC:C6:00:00:00 to 58:FC:C6:FF:FF:FF, or 16,777,216 addresses in total. It is also written 58-FC-C6.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 58:FC:C6:00:00:00 that is 58:FC:C6 — 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 TOZO INC located?: TOZO INC is listed at 1546 NW 56TH ST # 743 SEATTLE WA US 98107-5209 in the IEEE OUI registry entry for 58:FC:C6. This is the address the organization registered with the IEEE, which may differ from its current operating address.
How many MAC prefixes does TOZO INC own?: TOZO INC holds 2 OUI prefixes in the IEEE registry, of which 58:FC:C6 is one. A device made by TOZO INC could carry a MAC address from any of them.