Which company owns MAC address prefix 20:2A:C5?

MAC address prefix 20:2A:C5 is registered to Petite-En in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 20:2A:C5 has a network interface built by Petite-En.

What is the OUI 20:2A:C5?

20:2A:C5 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Petite-En. It covers every address from 20:2A:C5:00:00:00 to 20:2A:C5:FF:FF:FF, or 16,777,216 addresses in total. It is also written 20-2A-C5.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 20:2A:C5:00:00:00 that is 20:2A:C5 — 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 Petite-En located?

Petite-En is listed at 1, Gwanak-ro, Gwanak-gu Seoul KR 08826 in the IEEE OUI registry entry for 20:2A:C5. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Petite-En

MAC address prefix 20:2A:C5 is registered to Petite-En in the IEEE OUI registry. Any device whose MAC address begins with 20:2A:C5 has a network interface built by Petite-En. 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 20:2A:C5:00:00:00 to 20:2A:C5:FF:FF:FF.

OUI prefix: 20:2A:C5
Hyphen form: 20-2A-C5
MAC range: 20:2A:C5:00:00:00 – 20:2A:C5:FF:FF:FF
Addresses in block: 16,777,216
Organization: Petite-En
Address: 1, Gwanak-ro, Gwanak-gu Seoul KR 08826
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.

2018-12-21Assigned to "Petite-En"
archived source →
2026-07-17Assigned to "Petite-En"

Nearby in the registry

The prefixes assigned immediately before and after 20:2A:C5:

FAQ

Which company owns MAC address prefix 20:2A:C5?: MAC address prefix 20:2A:C5 is registered to Petite-En in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 20:2A:C5 has a network interface built by Petite-En.
What is the OUI 20:2A:C5?: 20:2A:C5 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Petite-En. It covers every address from 20:2A:C5:00:00:00 to 20:2A:C5:FF:FF:FF, or 16,777,216 addresses in total. It is also written 20-2A-C5.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 20:2A:C5:00:00:00 that is 20:2A:C5 — 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 Petite-En located?: Petite-En is listed at 1, Gwanak-ro, Gwanak-gu Seoul KR 08826 in the IEEE OUI registry entry for 20:2A:C5. This is the address the organization registered with the IEEE, which may differ from its current operating address.