Which company owns MAC address prefix 50:09:E5?

MAC address prefix 50:09:E5 is registered to Drimsys,Inc in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 50:09:E5 has a network interface built by Drimsys,Inc.

What is the OUI 50:09:E5?

50:09:E5 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Drimsys,Inc. It covers every address from 50:09:E5:00:00:00 to 50:09:E5:FF:FF:FF, or 16,777,216 addresses in total. It is also written 50-09-E5.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 50:09:E5:00:00:00 that is 50:09:E5 — 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 Drimsys,Inc located?

Drimsys,Inc is listed at 147, Baumoe-ro Seocho-gu Seoul KR 06752 in the IEEE OUI registry entry for 50:09:E5. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Drimsys,Inc

MAC address prefix 50:09:E5 is registered to Drimsys,Inc in the IEEE OUI registry. Any device whose MAC address begins with 50:09:E5 has a network interface built by Drimsys,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 50:09:E5:00:00:00 to 50:09:E5:FF:FF:FF.

OUI prefix: 50:09:E5
Hyphen form: 50-09-E5
MAC range: 50:09:E5:00:00:00 – 50:09:E5:FF:FF:FF
Addresses in block: 16,777,216
Organization: Drimsys,Inc
Address: 147, Baumoe-ro Seocho-gu Seoul KR 06752
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.

2021-06-10Assigned to "Drimsys,Inc"
archived source →
2026-07-17Assigned to "Drimsys,Inc"

Nearby in the registry

The prefixes assigned immediately before and after 50:09:E5:

FAQ

Which company owns MAC address prefix 50:09:E5?: MAC address prefix 50:09:E5 is registered to Drimsys,Inc in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 50:09:E5 has a network interface built by Drimsys,Inc.
What is the OUI 50:09:E5?: 50:09:E5 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Drimsys,Inc. It covers every address from 50:09:E5:00:00:00 to 50:09:E5:FF:FF:FF, or 16,777,216 addresses in total. It is also written 50-09-E5.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 50:09:E5:00:00:00 that is 50:09:E5 — 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 Drimsys,Inc located?: Drimsys,Inc is listed at 147, Baumoe-ro Seocho-gu Seoul KR 06752 in the IEEE OUI registry entry for 50:09:E5. This is the address the organization registered with the IEEE, which may differ from its current operating address.