Which company owns MAC address prefix 00:0A:65?

MAC address prefix 00:0A:65 is registered to GentechMedia.co.,ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 00:0A:65 has a network interface built by GentechMedia.co.,ltd..

What is the OUI 00:0A:65?

00:0A:65 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to GentechMedia.co.,ltd.. It covers every address from 00:0A:65:00:00:00 to 00:0A:65:FF:FF:FF, or 16,777,216 addresses in total. It is also written 00-0A-65.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 00:0A:65:00:00:00 that is 00:0A:65 — 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 GentechMedia.co.,ltd. located?

GentechMedia.co.,ltd. is listed at solvit bldg 2f, 402-8, yangjae-don, seocho-gu, seoul KR 137-899 in the IEEE OUI registry entry for 00:0A:65. This is the address the organization registered with the IEEE, which may differ from its current operating address.

GentechMedia.co.,ltd.

MAC address prefix 00:0A:65 is registered to GentechMedia.co.,ltd. in the IEEE OUI registry. Any device whose MAC address begins with 00:0A:65 has a network interface built by GentechMedia.co.,ltd.. 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 00:0A:65:00:00:00 to 00:0A:65:FF:FF:FF.

OUI prefix: 00:0A:65
Hyphen form: 00-0A-65
MAC range: 00:0A:65:00:00:00 – 00:0A:65:FF:FF:FF
Addresses in block: 16,777,216
Organization: GentechMedia.co.,ltd.
Address: solvit bldg 2f, 402-8, yangjae-don, seocho-gu, seoul KR 137-899
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.

2016-07-29Assigned to "GentechMedia.co.,ltd."
archived source →
2026-07-17Assigned to "GentechMedia.co.,ltd."

Nearby in the registry

The prefixes assigned immediately before and after 00:0A:65:

FAQ

Which company owns MAC address prefix 00:0A:65?: MAC address prefix 00:0A:65 is registered to GentechMedia.co.,ltd. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 00:0A:65 has a network interface built by GentechMedia.co.,ltd..
What is the OUI 00:0A:65?: 00:0A:65 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to GentechMedia.co.,ltd.. It covers every address from 00:0A:65:00:00:00 to 00:0A:65:FF:FF:FF, or 16,777,216 addresses in total. It is also written 00-0A-65.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 00:0A:65:00:00:00 that is 00:0A:65 — 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 GentechMedia.co.,ltd. located?: GentechMedia.co.,ltd. is listed at solvit bldg 2f, 402-8, yangjae-don, seocho-gu, seoul KR 137-899 in the IEEE OUI registry entry for 00:0A:65. This is the address the organization registered with the IEEE, which may differ from its current operating address.