Which company owns MAC address prefix 40:19:20?

MAC address prefix 40:19:20 is registered to Movon Corporation in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 40:19:20 has a network interface built by Movon Corporation.

What is the OUI 40:19:20?

40:19:20 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Movon Corporation. It covers every address from 40:19:20:00:00:00 to 40:19:20:FF:FF:FF, or 16,777,216 addresses in total. It is also written 40-19-20.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 40:19:20:00:00:00 that is 40:19:20 — 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 Movon Corporation located?

Movon Corporation is listed at 3Fl, Hyunjuk Bldg. 7 selleung-ro, 94gil, Gangnam-gu Seoul KR 06161 in the IEEE OUI registry entry for 40:19:20. This is the address the organization registered with the IEEE, which may differ from its current operating address.

How many MAC prefixes does Movon Corporation own?

Movon Corporation holds 2 OUI prefixes in the IEEE registry, of which 40:19:20 is one. A device made by Movon Corporation could carry a MAC address from any of them.

Movon Corporation

MAC address prefix 40:19:20 is registered to Movon Corporation in the IEEE OUI registry. Any device whose MAC address begins with 40:19:20 has a network interface built by Movon Corporation. 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 40:19:20:00:00:00 to 40:19:20:FF:FF:FF.

OUI prefix: 40:19:20
Hyphen form: 40-19-20
MAC range: 40:19:20:00:00:00 – 40:19:20:FF:FF:FF
Addresses in block: 16,777,216
Organization: Movon Corporation
Address: 3Fl, Hyunjuk Bldg. 7 selleung-ro, 94gil, Gangnam-gu Seoul KR 06161
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.

Other prefixes from Movon Corporation

Movon Corporation holds 2 OUI prefixes in total. A device with this exact prefix could just as well carry any of these:

00:13:7B

Assignment history (2)

The IEEE registry publishes current state only — this is the change record we've kept since we started tracking it daily.

2019-07-04Assigned to "Movon Corporation"
archived source →
2026-07-17Assigned to "Movon Corporation"

Nearby in the registry

The prefixes assigned immediately before and after 40:19:20:

FAQ

Which company owns MAC address prefix 40:19:20?: MAC address prefix 40:19:20 is registered to Movon Corporation in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 40:19:20 has a network interface built by Movon Corporation.
What is the OUI 40:19:20?: 40:19:20 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Movon Corporation. It covers every address from 40:19:20:00:00:00 to 40:19:20:FF:FF:FF, or 16,777,216 addresses in total. It is also written 40-19-20.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 40:19:20:00:00:00 that is 40:19:20 — 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 Movon Corporation located?: Movon Corporation is listed at 3Fl, Hyunjuk Bldg. 7 selleung-ro, 94gil, Gangnam-gu Seoul KR 06161 in the IEEE OUI registry entry for 40:19:20. This is the address the organization registered with the IEEE, which may differ from its current operating address.
How many MAC prefixes does Movon Corporation own?: Movon Corporation holds 2 OUI prefixes in the IEEE registry, of which 40:19:20 is one. A device made by Movon Corporation could carry a MAC address from any of them.