Which company owns MAC address prefix 58:A0:CB?

MAC address prefix 58:A0:CB is registered to TrackNet, Inc in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 58:A0:CB has a network interface built by TrackNet, Inc.

What is the OUI 58:A0:CB?

58:A0:CB is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to TrackNet, Inc. It covers every address from 58:A0:CB:00:00:00 to 58:A0:CB:FF:FF:FF, or 16,777,216 addresses in total. It is also written 58-A0-CB.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 58:A0:CB:00:00:00 that is 58:A0:CB — 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 TrackNet, Inc located?

TrackNet, Inc is listed at 900 Lafayette Street #329 Santa Clara CA US 95050 in the IEEE OUI registry entry for 58:A0:CB. This is the address the organization registered with the IEEE, which may differ from its current operating address.

TrackNet, Inc

MAC address prefix 58:A0:CB is registered to TrackNet, Inc in the IEEE OUI registry. Any device whose MAC address begins with 58:A0:CB has a network interface built by TrackNet, 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:A0:CB:00:00:00 to 58:A0:CB:FF:FF:FF.

OUI prefix: 58:A0:CB
Hyphen form: 58-A0-CB
MAC range: 58:A0:CB:00:00:00 – 58:A0:CB:FF:FF:FF
Addresses in block: 16,777,216
Organization: TrackNet, Inc
Address: 900 Lafayette Street #329 Santa Clara CA US 95050
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.

2017-09-08Assigned to "TrackNet, Inc"
archived source →
2026-07-17Assigned to "TrackNet, Inc"

Nearby in the registry

The prefixes assigned immediately before and after 58:A0:CB:

FAQ

Which company owns MAC address prefix 58:A0:CB?: MAC address prefix 58:A0:CB is registered to TrackNet, Inc in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 58:A0:CB has a network interface built by TrackNet, Inc.
What is the OUI 58:A0:CB?: 58:A0:CB is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to TrackNet, Inc. It covers every address from 58:A0:CB:00:00:00 to 58:A0:CB:FF:FF:FF, or 16,777,216 addresses in total. It is also written 58-A0-CB.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 58:A0:CB:00:00:00 that is 58:A0:CB — 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 TrackNet, Inc located?: TrackNet, Inc is listed at 900 Lafayette Street #329 Santa Clara CA US 95050 in the IEEE OUI registry entry for 58:A0:CB. This is the address the organization registered with the IEEE, which may differ from its current operating address.