Which company owns MAC address prefix 0C:B4:59?

MAC address prefix 0C:B4:59 is registered to Marketech International Corp. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 0C:B4:59 has a network interface built by Marketech International Corp..

What is the OUI 0C:B4:59?

0C:B4:59 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Marketech International Corp.. It covers every address from 0C:B4:59:00:00:00 to 0C:B4:59:FF:FF:FF, or 16,777,216 addresses in total. It is also written 0C-B4-59.

How do I find the manufacturer of a MAC address?

Take the first three octets of the address — in 0C:B4:59:00:00:00 that is 0C:B4:59 — 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 Marketech International Corp. located?

Marketech International Corp. is listed at 10F.,NO.3-2,Yuancyu St.,Nangang Dist. Taipei TW 11503 in the IEEE OUI registry entry for 0C:B4:59. This is the address the organization registered with the IEEE, which may differ from its current operating address.

Marketech International Corp.

MAC address prefix 0C:B4:59 is registered to Marketech International Corp. in the IEEE OUI registry. Any device whose MAC address begins with 0C:B4:59 has a network interface built by Marketech International Corp.. 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 0C:B4:59:00:00:00 to 0C:B4:59:FF:FF:FF.

OUI prefix: 0C:B4:59
Hyphen form: 0C-B4-59
MAC range: 0C:B4:59:00:00:00 – 0C:B4:59:FF:FF:FF
Addresses in block: 16,777,216
Organization: Marketech International Corp.
Address: 10F.,NO.3-2,Yuancyu St.,Nangang Dist. Taipei TW 11503
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.

2017-09-08Assigned to "Marketech International Corp."
archived source →
2026-07-17Assigned to "Marketech International Corp."

Nearby in the registry

The prefixes assigned immediately before and after 0C:B4:59:

FAQ

Which company owns MAC address prefix 0C:B4:59?: MAC address prefix 0C:B4:59 is registered to Marketech International Corp. in the IEEE Organizationally Unique Identifier (OUI) registry. Any device whose MAC address begins with 0C:B4:59 has a network interface built by Marketech International Corp..
What is the OUI 0C:B4:59?: 0C:B4:59 is an Organizationally Unique Identifier — the first three octets (24 bits) of a MAC address, assigned by the IEEE to Marketech International Corp.. It covers every address from 0C:B4:59:00:00:00 to 0C:B4:59:FF:FF:FF, or 16,777,216 addresses in total. It is also written 0C-B4-59.
How do I find the manufacturer of a MAC address?: Take the first three octets of the address — in 0C:B4:59:00:00:00 that is 0C:B4:59 — 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 Marketech International Corp. located?: Marketech International Corp. is listed at 10F.,NO.3-2,Yuancyu St.,Nangang Dist. Taipei TW 11503 in the IEEE OUI registry entry for 0C:B4:59. This is the address the organization registered with the IEEE, which may differ from its current operating address.