Which company owns MAC address prefix 90:18:5E?

MAC address prefix 90:18:5E is registered to Apex Tool Group GmbH & Co OHG in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 90:18:5E has a network interface built by Apex Tool Group GmbH & Co OHG.

What is the OUI 90:18:5E?

90:18:5E is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Apex Tool Group GmbH & Co OHG. It covers every address from 90:18:5E:00:00:00 to 90:18:5E:FF:FF:FF, or 16,777,216 addresses in total. It is also written 90-18-5E.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 90:18:5E:00:00:00 that is 90:18:5E — 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 Apex Tool Group GmbH & Co OHG located?

Apex Tool Group GmbH & Co OHG is listed at Industriestraße 1 Westhausen DE 73463 in the IEEE OUI registry entry for 90:18:5E. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Apex Tool Group GmbH & Co OHG

MAC address prefix 90:18:5E is registered to Apex Tool Group GmbH & Co OHG in the IEEE OUI registry. Any device whose MAC address begins with 90:18:5E has a network interface built by Apex Tool Group GmbH & Co OHG. 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 90:18:5E:00:00:00 to 90:18:5E:FF:FF:FF.

OUI prefix: 90:18:5E
Hyphen form: 90-18-5E
MAC range: 90:18:5E:00:00:00 – 90:18:5E:FF:FF:FF
Addresses in block: 16,777,216
Organization: Apex Tool Group GmbH & Co OHG
Address: Industriestraße 1 Westhausen DE 73463
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 "Apex Tool Group GmbH & Co OHG"
archived source →
2026-07-17Assigned to "Apex Tool Group GmbH & Co OHG"

Nearby in the registry

The prefixes assigned immediately before and after 90:18:5E:

FAQ

Which company owns MAC address prefix 90:18:5E?: MAC address prefix 90:18:5E is registered to Apex Tool Group GmbH & Co OHG in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 90:18:5E has a network interface built by Apex Tool Group GmbH & Co OHG.
What is the OUI 90:18:5E?: 90:18:5E is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Apex Tool Group GmbH & Co OHG. It covers every address from 90:18:5E:00:00:00 to 90:18:5E:FF:FF:FF, or 16,777,216 addresses in total. It is also written 90-18-5E.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 90:18:5E:00:00:00 that is 90:18:5E — 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 Apex Tool Group GmbH & Co OHG located?: Apex Tool Group GmbH & Co OHG is listed at Industriestraße 1 Westhausen DE 73463 in the IEEE OUI registry entry for 90:18:5E. This is the address the organization registered with the IEEE, which may differ from its current operating address.