Which company owns MAC address prefix 20:21:41?

MAC address prefix 20:21:41 is registered to Universal Electronics BV in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 20:21:41 has a network interface built by Universal Electronics BV.

What is the OUI 20:21:41?

20:21:41 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Universal Electronics BV. It covers every address from 20:21:41:00:00:00 to 20:21:41:FF:FF:FF, or 16,777,216 addresses in total. It is also written 20-21-41.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 20:21:41:00:00:00 that is 20:21:41 — 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 Universal Electronics BV located?

Universal Electronics BV is listed at Colosseum 2 Enschede Ov NL 7521 PT in the IEEE OUI registry entry for 20:21:41. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Universal Electronics BV

MAC address prefix 20:21:41 is registered to Universal Electronics BV in the IEEE OUI registry. Any device whose MAC address begins with 20:21:41 has a network interface built by Universal Electronics BV. 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 20:21:41:00:00:00 to 20:21:41:FF:FF:FF.

OUI prefix: 20:21:41
Hyphen form: 20-21-41
MAC range: 20:21:41:00:00:00 – 20:21:41:FF:FF:FF
Addresses in block: 16,777,216
Organization: Universal Electronics BV
Address: Colosseum 2 Enschede Ov NL 7521 PT
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.

2023-07-11Assigned to "Universal Electronics BV"
archived source →
2026-07-17Assigned to "Universal Electronics BV"

Nearby in the registry

The prefixes assigned immediately before and after 20:21:41:

FAQ

Which company owns MAC address prefix 20:21:41?: MAC address prefix 20:21:41 is registered to Universal Electronics BV in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 20:21:41 has a network interface built by Universal Electronics BV.
What is the OUI 20:21:41?: 20:21:41 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Universal Electronics BV. It covers every address from 20:21:41:00:00:00 to 20:21:41:FF:FF:FF, or 16,777,216 addresses in total. It is also written 20-21-41.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 20:21:41:00:00:00 that is 20:21:41 — 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 Universal Electronics BV located?: Universal Electronics BV is listed at Colosseum 2 Enschede Ov NL 7521 PT in the IEEE OUI registry entry for 20:21:41. This is the address the organization registered with the IEEE, which may differ from its current operating address.