Which company owns MAC address prefix 44:EF:CF?

MAC address prefix 44:EF:CF is registered to UGENE SOLUTION inc. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 44:EF:CF has a network interface built by UGENE SOLUTION inc..

What is the OUI 44:EF:CF?

44:EF:CF is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to UGENE SOLUTION inc.. It covers every address from 44:EF:CF:00:00:00 to 44:EF:CF:FF:FF:FF, or 16,777,216 addresses in total. It is also written 44-EF-CF.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 44:EF:CF:00:00:00 that is 44:EF:CF — 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 UGENE SOLUTION inc. located?

UGENE SOLUTION inc. is listed at A-1508, 1509, 583, Yangcheon-ro, Gangseo-gu Seoul KR KS013 in the IEEE OUI registry entry for 44:EF:CF. This is the address the organization registered with the IEEE, which may differ from its current operating address.

UGENE SOLUTION inc.

MAC address prefix 44:EF:CF is registered to UGENE SOLUTION inc. in the IEEE OUI registry. Any device whose MAC address begins with 44:EF:CF has a network interface built by UGENE SOLUTION 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 44:EF:CF:00:00:00 to 44:EF:CF:FF:FF:FF.

OUI prefix: 44:EF:CF
Hyphen form: 44-EF-CF
MAC range: 44:EF:CF:00:00:00 – 44:EF:CF:FF:FF:FF
Addresses in block: 16,777,216
Organization: UGENE SOLUTION inc.
Address: A-1508, 1509, 583, Yangcheon-ro, Gangseo-gu Seoul KR KS013
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 "UGENE SOLUTION inc."
archived source →
2026-07-17Assigned to "UGENE SOLUTION inc."

Nearby in the registry

The prefixes assigned immediately before and after 44:EF:CF:

FAQ

Which company owns MAC address prefix 44:EF:CF?: MAC address prefix 44:EF:CF is registered to UGENE SOLUTION inc. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 44:EF:CF has a network interface built by UGENE SOLUTION inc..
What is the OUI 44:EF:CF?: 44:EF:CF is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to UGENE SOLUTION inc.. It covers every address from 44:EF:CF:00:00:00 to 44:EF:CF:FF:FF:FF, or 16,777,216 addresses in total. It is also written 44-EF-CF.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 44:EF:CF:00:00:00 that is 44:EF:CF — 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 UGENE SOLUTION inc. located?: UGENE SOLUTION inc. is listed at A-1508, 1509, 583, Yangcheon-ro, Gangseo-gu Seoul KR KS013 in the IEEE OUI registry entry for 44:EF:CF. This is the address the organization registered with the IEEE, which may differ from its current operating address.