Which company owns MAC address prefix 58:7F:C8?

MAC address prefix 58:7F:C8 is registered to S2M in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 58:7F:C8 has a network interface built by S2M.

What is the OUI 58:7F:C8?

58:7F:C8 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to S2M. It covers every address from 58:7F:C8:00:00:00 to 58:7F:C8:FF:FF:FF, or 16,777,216 addresses in total. It is also written 58-7F-C8.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 58:7F:C8:00:00:00 that is 58:7F:C8 — 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 S2M located?

S2M is listed at 2 rue des champs Saint Marcel FR 27950 in the IEEE OUI registry entry for 58:7F:C8. This is the address the organization registered with the IEEE, which may differ from its current operating address.

S2M

MAC address prefix 58:7F:C8 is registered to S2M in the IEEE OUI registry. Any device whose MAC address begins with 58:7F:C8 has a network interface built by S2M. 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 58:7F:C8:00:00:00 to 58:7F:C8:FF:FF:FF.

OUI prefix: 58:7F:C8
Hyphen form: 58-7F-C8
MAC range: 58:7F:C8:00:00:00 – 58:7F:C8:FF:FF:FF
Addresses in block: 16,777,216
Organization: S2M
Address: 2 rue des champs Saint Marcel FR 27950
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.

2016-07-29Assigned to "S2M"
archived source →
2026-07-17Assigned to "S2M"

Nearby in the registry

The prefixes assigned immediately before and after 58:7F:C8:

FAQ

Which company owns MAC address prefix 58:7F:C8?: MAC address prefix 58:7F:C8 is registered to S2M in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 58:7F:C8 has a network interface built by S2M.
What is the OUI 58:7F:C8?: 58:7F:C8 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to S2M. It covers every address from 58:7F:C8:00:00:00 to 58:7F:C8:FF:FF:FF, or 16,777,216 addresses in total. It is also written 58-7F-C8.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 58:7F:C8:00:00:00 that is 58:7F:C8 — 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 S2M located?: S2M is listed at 2 rue des champs Saint Marcel FR 27950 in the IEEE OUI registry entry for 58:7F:C8. This is the address the organization registered with the IEEE, which may differ from its current operating address.